/* prototype.js */
/*  Prototype JavaScript framework, version 1.6.0.2
 *  (c) 2005-2008 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/

var Prototype = {
  Version: '1.6.0.2',

  Browser: {
    IE:     !!(window.attachEvent && !window.opera),
    Opera:  !!window.opera,
    WebKit: navigator.userAgent.indexOf('AppleWebKit/') > -1,
    Gecko:  navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('KHTML') == -1,
    MobileSafari: !!navigator.userAgent.match(/Apple.*Mobile.*Safari/)
  },

  BrowserFeatures: {
    XPath: !!document.evaluate,
    ElementExtensions: !!window.HTMLElement,
    SpecificElementExtensions:
      document.createElement('div').__proto__ &&
      document.createElement('div').__proto__ !==
        document.createElement('form').__proto__
  },

  ScriptFragment: '<script[^>]*>([\\S\\s]*?)<\/script>',
  JSONFilter: /^\/\*-secure-([\s\S]*)\*\/\s*$/,

  emptyFunction: function() { },
  K: function(x) { return x }
};

if (Prototype.Browser.MobileSafari)
  Prototype.BrowserFeatures.SpecificElementExtensions = false;


/* Based on Alex Arnell's inheritance implementation. */
var Class = {
  create: function() {
    var parent = null, properties = $A(arguments);
    if (Object.isFunction(properties[0]))
      parent = properties.shift();

    function klass() {
      this.initialize.apply(this, arguments);
    }

    Object.extend(klass, Class.Methods);
    klass.superclass = parent;
    klass.subclasses = [];

    if (parent) {
      var subclass = function() { };
      subclass.prototype = parent.prototype;
      klass.prototype = new subclass;
      parent.subclasses.push(klass);
    }

    for (var i = 0; i < properties.length; i++)
      klass.addMethods(properties[i]);

    if (!klass.prototype.initialize)
      klass.prototype.initialize = Prototype.emptyFunction;

    klass.prototype.constructor = klass;

    return klass;
  }
};

Class.Methods = {
  addMethods: function(source) {
    var ancestor   = this.superclass && this.superclass.prototype;
    var properties = Object.keys(source);

    if (!Object.keys({ toString: true }).length)
      properties.push("toString", "valueOf");

    for (var i = 0, length = properties.length; i < length; i++) {
      var property = properties[i], value = source[property];
      if (ancestor && Object.isFunction(value) &&
          value.argumentNames().first() == "$super") {
        var method = value, value = Object.extend((function(m) {
          return function() { return ancestor[m].apply(this, arguments) };
        })(property).wrap(method), {
          valueOf:  function() { return method },
          toString: function() { return method.toString() }
        });
      }
      this.prototype[property] = value;
    }

    return this;
  }
};

var Abstract = { };

Object.extend = function(destination, source) {
  for (var property in source)
    destination[property] = source[property];
  return destination;
};

Object.extend(Object, {
  inspect: function(object) {
    try {
      if (Object.isUndefined(object)) return 'undefined';
      if (object === null) return 'null';
      return object.inspect ? object.inspect() : String(object);
    } catch (e) {
      if (e instanceof RangeError) return '...';
      throw e;
    }
  },

  toJSON: function(object) {
    var type = typeof object;
    switch (type) {
      case 'undefined':
      case 'function':
      case 'unknown': return;
      case 'boolean': return object.toString();
    }

    if (object === null) return 'null';
    if (object.toJSON) return object.toJSON();
    if (Object.isElement(object)) return;

    var results = [];
    for (var property in object) {
      var value = Object.toJSON(object[property]);
      if (!Object.isUndefined(value))
        results.push(property.toJSON() + ': ' + value);
    }

    return '{' + results.join(', ') + '}';
  },

  toQueryString: function(object) {
    return $H(object).toQueryString();
  },

  toHTML: function(object) {
    return object && object.toHTML ? object.toHTML() : String.interpret(object);
  },

  keys: function(object) {
    var keys = [];
    for (var property in object)
      keys.push(property);
    return keys;
  },

  values: function(object) {
    var values = [];
    for (var property in object)
      values.push(object[property]);
    return values;
  },

  clone: function(object) {
    return Object.extend({ }, object);
  },

  isElement: function(object) {
    return object && object.nodeType == 1;
  },

  isArray: function(object) {
    return object != null && typeof object == "object" &&
      'splice' in object && 'join' in object;
  },

  isHash: function(object) {
    return object instanceof Hash;
  },

  isFunction: function(object) {
    return typeof object == "function";
  },

  isString: function(object) {
    return typeof object == "string";
  },

  isNumber: function(object) {
    return typeof object == "number";
  },

  isUndefined: function(object) {
    return typeof object == "undefined";
  }
});

Object.extend(Function.prototype, {
  argumentNames: function() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\((.*?)\)/)[1].split(",").invoke("strip");
    return names.length == 1 && !names[0] ? [] : names;
  },

  bind: function() {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = $A(arguments), object = args.shift();
    return function() {
      return __method.apply(object, args.concat($A(arguments)));
    }
  },

  bindAsEventListener: function() {
    var __method = this, args = $A(arguments), object = args.shift();
    return function(event) {
      return __method.apply(object, [event || window.event].concat(args));
    }
  },

  curry: function() {
    if (!arguments.length) return this;
    var __method = this, args = $A(arguments);
    return function() {
      return __method.apply(this, args.concat($A(arguments)));
    }
  },

  delay: function() {
    var __method = this, args = $A(arguments), timeout = args.shift() * 1000;
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  },

  wrap: function(wrapper) {
    var __method = this;
    return function() {
      return wrapper.apply(this, [__method.bind(this)].concat($A(arguments)));
    }
  },

  methodize: function() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      return __method.apply(null, [this].concat($A(arguments)));
    };
  }
});

Function.prototype.defer = Function.prototype.delay.curry(0.01);

Date.prototype.toJSON = function() {
  return '"' + this.getUTCFullYear() + '-' +
    (this.getUTCMonth() + 1).toPaddedString(2) + '-' +
    this.getUTCDate().toPaddedString(2) + 'T' +
    this.getUTCHours().toPaddedString(2) + ':' +
    this.getUTCMinutes().toPaddedString(2) + ':' +
    this.getUTCSeconds().toPaddedString(2) + 'Z"';
};

var Try = {
  these: function() {
    var returnValue;

    for (var i = 0, length = arguments.length; i < length; i++) {
      var lambda = arguments[i];
      try {
        returnValue = lambda();
        break;
      } catch (e) { }
    }

    return returnValue;
  }
};

RegExp.prototype.match = RegExp.prototype.test;

RegExp.escape = function(str) {
  return String(str).replace(/([.*+?^=!:${}()|[\]\/\\])/g, '\\$1');
};

/*--------------------------------------------------------------------------*/

var PeriodicalExecuter = Class.create({
  initialize: function(callback, frequency) {
    this.callback = callback;
    this.frequency = frequency;
    this.currentlyExecuting = false;

    this.registerCallback();
  },

  registerCallback: function() {
    this.timer = setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
  },

  execute: function() {
    this.callback(this);
  },

  stop: function() {
    if (!this.timer) return;
    clearInterval(this.timer);
    this.timer = null;
  },

  onTimerEvent: function() {
    if (!this.currentlyExecuting) {
      try {
        this.currentlyExecuting = true;
        this.execute();
      } finally {
        this.currentlyExecuting = false;
      }
    }
  }
});
Object.extend(String, {
  interpret: function(value) {
    return value == null ? '' : String(value);
  },
  specialChar: {
    '\b': '\\b',
    '\t': '\\t',
    '\n': '\\n',
    '\f': '\\f',
    '\r': '\\r',
    '\\': '\\\\'
  }
});

Object.extend(String.prototype, {
  gsub: function(pattern, replacement) {
    var result = '', source = this, match;
    replacement = arguments.callee.prepareReplacement(replacement);

    while (source.length > 0) {
      if (match = source.match(pattern)) {
        result += source.slice(0, match.index);
        result += String.interpret(replacement(match));
        source  = source.slice(match.index + match[0].length);
      } else {
        result += source, source = '';
      }
    }
    return result;
  },

  sub: function(pattern, replacement, count) {
    replacement = this.gsub.prepareReplacement(replacement);
    count = Object.isUndefined(count) ? 1 : count;

    return this.gsub(pattern, function(match) {
      if (--count < 0) return match[0];
      return replacement(match);
    });
  },

  scan: function(pattern, iterator) {
    this.gsub(pattern, iterator);
    return String(this);
  },

  truncate: function(length, truncation) {
    length = length || 30;
    truncation = Object.isUndefined(truncation) ? '...' : truncation;
    return this.length > length ?
      this.slice(0, length - truncation.length) + truncation : String(this);
  },

  strip: function() {
    return this.replace(/^\s+/, '').replace(/\s+$/, '');
  },

  stripTags: function() {
    return this.replace(/<\/?[^>]+>/gi, '');
  },

  stripScripts: function() {
    return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
  },

  extractScripts: function() {
    var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
    var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
    return (this.match(matchAll) || []).map(function(scriptTag) {
      return (scriptTag.match(matchOne) || ['', ''])[1];
    });
  },

  evalScripts: function() {
    return this.extractScripts().map(function(script) { return eval(script) });
  },

  escapeHTML: function() {
    var self = arguments.callee;
    self.text.data = this;
    return self.div.innerHTML;
  },

  unescapeHTML: function() {
    var div = new Element('div');
    div.innerHTML = this.stripTags();
    return div.childNodes[0] ? (div.childNodes.length > 1 ?
      $A(div.childNodes).inject('', function(memo, node) { return memo+node.nodeValue }) :
      div.childNodes[0].nodeValue) : '';
  },

  toQueryParams: function(separator) {
    var match = this.strip().match(/([^?#]*)(#.*)?$/);
    if (!match) return { };

    return match[1].split(separator || '&').inject({ }, function(hash, pair) {
      if ((pair = pair.split('='))[0]) {
        var key = decodeURIComponent(pair.shift());
        var value = pair.length > 1 ? pair.join('=') : pair[0];
        if (value != undefined) value = decodeURIComponent(value);

        if (key in hash) {
          if (!Object.isArray(hash[key])) hash[key] = [hash[key]];
          hash[key].push(value);
        }
        else hash[key] = value;
      }
      return hash;
    });
  },

  toArray: function() {
    return this.split('');
  },

  succ: function() {
    return this.slice(0, this.length - 1) +
      String.fromCharCode(this.charCodeAt(this.length - 1) + 1);
  },

  times: function(count) {
    return count < 1 ? '' : new Array(count + 1).join(this);
  },

  camelize: function() {
    var parts = this.split('-'), len = parts.length;
    if (len == 1) return parts[0];

    var camelized = this.charAt(0) == '-'
      ? parts[0].charAt(0).toUpperCase() + parts[0].substring(1)
      : parts[0];

    for (var i = 1; i < len; i++)
      camelized += parts[i].charAt(0).toUpperCase() + parts[i].substring(1);

    return camelized;
  },

  capitalize: function() {
    return this.charAt(0).toUpperCase() + this.substring(1).toLowerCase();
  },

  underscore: function() {
    return this.gsub(/::/, '/').gsub(/([A-Z]+)([A-Z][a-z])/,'#{1}_#{2}').gsub(/([a-z\d])([A-Z])/,'#{1}_#{2}').gsub(/-/,'_').toLowerCase();
  },

  dasherize: function() {
    return this.gsub(/_/,'-');
  },

  inspect: function(useDoubleQuotes) {
    var escapedString = this.gsub(/[\x00-\x1f\\]/, function(match) {
      var character = String.specialChar[match[0]];
      return character ? character : '\\u00' + match[0].charCodeAt().toPaddedString(2, 16);
    });
    if (useDoubleQuotes) return '"' + escapedString.replace(/"/g, '\\"') + '"';
    return "'" + escapedString.replace(/'/g, '\\\'') + "'";
  },

  toJSON: function() {
    return this.inspect(true);
  },

  unfilterJSON: function(filter) {
    return this.sub(filter || Prototype.JSONFilter, '#{1}');
  },

  isJSON: function() {
    var str = this;
    if (str.blank()) return false;
    str = this.replace(/\\./g, '@').replace(/"[^"\\\n\r]*"/g, '');
    return (/^[,:{}\[\]0-9.\-+Eaeflnr-u \n\r\t]*$/).test(str);
  },

  evalJSON: function(sanitize) {
    var json = this.unfilterJSON();
    try {
      if (!sanitize || json.isJSON()) return eval('(' + json + ')');
    } catch (e) { }
    throw new SyntaxError('Badly formed JSON string: ' + this.inspect());
  },

  include: function(pattern) {
    return this.indexOf(pattern) > -1;
  },

  startsWith: function(pattern) {
    return this.indexOf(pattern) === 0;
  },

  endsWith: function(pattern) {
    var d = this.length - pattern.length;
    return d >= 0 && this.lastIndexOf(pattern) === d;
  },

  empty: function() {
    return this == '';
  },

  blank: function() {
    return /^\s*$/.test(this);
  },

  interpolate: function(object, pattern) {
    return new Template(this, pattern).evaluate(object);
  }
});

if (Prototype.Browser.WebKit || Prototype.Browser.IE) Object.extend(String.prototype, {
  escapeHTML: function() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  },
  unescapeHTML: function() {
    return this.replace(/&amp;/g,'&').replace(/&lt;/g,'<').replace(/&gt;/g,'>');
  }
});

String.prototype.gsub.prepareReplacement = function(replacement) {
  if (Object.isFunction(replacement)) return replacement;
  var template = new Template(replacement);
  return function(match) { return template.evaluate(match) };
};

String.prototype.parseQuery = String.prototype.toQueryParams;

Object.extend(String.prototype.escapeHTML, {
  div:  document.createElement('div'),
  text: document.createTextNode('')
});

with (String.prototype.escapeHTML) div.appendChild(text);

var Template = Class.create({
  initialize: function(template, pattern) {
    this.template = template.toString();
    this.pattern = pattern || Template.Pattern;
  },

  evaluate: function(object) {
    if (Object.isFunction(object.toTemplateReplacements))
      object = object.toTemplateReplacements();

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return '';

      var before = match[1] || '';
      if (before == '\\') return match[2];

      var ctx = object, expr = match[3];
      var pattern = /^([^.[]+|\[((?:.*?[^\\])?)\])(\.|\[|$)/;
      match = pattern.exec(expr);
      if (match == null) return before;

      while (match != null) {
        var comp = match[1].startsWith('[') ? match[2].gsub('\\\\]', ']') : match[1];
        ctx = ctx[comp];
        if (null == ctx || '' == match[3]) break;
        expr = expr.substring('[' == match[3] ? match[1].length : match[0].length);
        match = pattern.exec(expr);
      }

      return before + String.interpret(ctx);
    });
  }
});
Template.Pattern = /(^|.|\r|\n)(#\{(.*?)\})/;

var $break = { };

var Enumerable = {
  each: function(iterator, context) {
    var index = 0;
    iterator = iterator.bind(context);
    try {
      this._each(function(value) {
        iterator(value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  },

  eachSlice: function(number, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var index = -number, slices = [], array = this.toArray();
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  },

  all: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = true;
    this.each(function(value, index) {
      result = result && !!iterator(value, index);
      if (!result) throw $break;
    });
    return result;
  },

  any: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result = false;
    this.each(function(value, index) {
      if (result = !!iterator(value, index))
        throw $break;
    });
    return result;
  },

  collect: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];
    this.each(function(value, index) {
      results.push(iterator(value, index));
    });
    return results;
  },

  detect: function(iterator, context) {
    iterator = iterator.bind(context);
    var result;
    this.each(function(value, index) {
      if (iterator(value, index)) {
        result = value;
        throw $break;
      }
    });
    return result;
  },

  findAll: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (iterator(value, index))
        results.push(value);
    });
    return results;
  },

  grep: function(filter, iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var results = [];

    if (Object.isString(filter))
      filter = new RegExp(filter);

    this.each(function(value, index) {
      if (filter.match(value))
        results.push(iterator(value, index));
    });
    return results;
  },

  include: function(object) {
    if (Object.isFunction(this.indexOf))
      if (this.indexOf(object) != -1) return true;

    var found = false;
    this.each(function(value) {
      if (value == object) {
        found = true;
        throw $break;
      }
    });
    return found;
  },

  inGroupsOf: function(number, fillWith) {
    fillWith = Object.isUndefined(fillWith) ? null : fillWith;
    return this.eachSlice(number, function(slice) {
      while(slice.length < number) slice.push(fillWith);
      return slice;
    });
  },

  inject: function(memo, iterator, context) {
    iterator = iterator.bind(context);
    this.each(function(value, index) {
      memo = iterator(memo, value, index);
    });
    return memo;
  },

  invoke: function(method) {
    var args = $A(arguments).slice(1);
    return this.map(function(value) {
      return value[method].apply(value, args);
    });
  },

  max: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value >= result)
        result = value;
    });
    return result;
  },

  min: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var result;
    this.each(function(value, index) {
      value = iterator(value, index);
      if (result == null || value < result)
        result = value;
    });
    return result;
  },

  partition: function(iterator, context) {
    iterator = iterator ? iterator.bind(context) : Prototype.K;
    var trues = [], falses = [];
    this.each(function(value, index) {
      (iterator(value, index) ?
        trues : falses).push(value);
    });
    return [trues, falses];
  },

  pluck: function(property) {
    var results = [];
    this.each(function(value) {
      results.push(value[property]);
    });
    return results;
  },

  reject: function(iterator, context) {
    iterator = iterator.bind(context);
    var results = [];
    this.each(function(value, index) {
      if (!iterator(value, index))
        results.push(value);
    });
    return results;
  },

  sortBy: function(iterator, context) {
    iterator = iterator.bind(context);
    return this.map(function(value, index) {
      return {value: value, criteria: iterator(value, index)};
    }).sort(function(left, right) {
      var a = left.criteria, b = right.criteria;
      return a < b ? -1 : a > b ? 1 : 0;
    }).pluck('value');
  },

  toArray: function() {
    return this.map();
  },

  zip: function() {
    var iterator = Prototype.K, args = $A(arguments);
    if (Object.isFunction(args.last()))
      iterator = args.pop();

    var collections = [this].concat(args).map($A);
    return this.map(function(value, index) {
      return iterator(collections.pluck(index));
    });
  },

  size: function() {
    return this.toArray().length;
  },

  inspect: function() {
    return '#<Enumerable:' + this.toArray().inspect() + '>';
  }
};

Object.extend(Enumerable, {
  map:     Enumerable.collect,
  find:    Enumerable.detect,
  select:  Enumerable.findAll,
  filter:  Enumerable.findAll,
  member:  Enumerable.include,
  entries: Enumerable.toArray,
  every:   Enumerable.all,
  some:    Enumerable.any
});
function $A(iterable) {
  if (!iterable) return [];
  if (iterable.toArray) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

if (Prototype.Browser.WebKit) {
  $A = function(iterable) {
    if (!iterable) return [];
    if (!(Object.isFunction(iterable) && iterable == '[object NodeList]') &&
        iterable.toArray) return iterable.toArray();
    var length = iterable.length || 0, results = new Array(length);
    while (length--) results[length] = iterable[length];
    return results;
  };
}

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

if (!Array.prototype._reverse) Array.prototype._reverse = Array.prototype.reverse;

Object.extend(Array.prototype, {
  _each: function(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  },

  clear: function() {
    this.length = 0;
    return this;
  },

  first: function() {
    return this[0];
  },

  last: function() {
    return this[this.length - 1];
  },

  compact: function() {
    return this.select(function(value) {
      return value != null;
    });
  },

  flatten: function() {
    return this.inject([], function(array, value) {
      return array.concat(Object.isArray(value) ?
        value.flatten() : [value]);
    });
  },

  without: function() {
    var values = $A(arguments);
    return this.select(function(value) {
      return !values.include(value);
    });
  },

  reverse: function(inline) {
    return (inline !== false ? this : this.toArray())._reverse();
  },

  reduce: function() {
    return this.length > 1 ? this : this[0];
  },

  uniq: function(sorted) {
    return this.inject([], function(array, value, index) {
      if (0 == index || (sorted ? array.last() != value : !array.include(value)))
        array.push(value);
      return array;
    });
  },

  intersect: function(array) {
    return this.uniq().findAll(function(item) {
      return array.detect(function(value) { return item === value });
    });
  },

  clone: function() {
    return [].concat(this);
  },

  size: function() {
    return this.length;
  },

  inspect: function() {
    return '[' + this.map(Object.inspect).join(', ') + ']';
  },

  toJSON: function() {
    var results = [];
    this.each(function(object) {
      var value = Object.toJSON(object);
      if (!Object.isUndefined(value)) results.push(value);
    });
    return '[' + results.join(', ') + ']';
  }
});

// use native browser JS 1.6 implementation if available
if (Object.isFunction(Array.prototype.forEach))
  Array.prototype._each = Array.prototype.forEach;

if (!Array.prototype.indexOf) Array.prototype.indexOf = function(item, i) {
  i || (i = 0);
  var length = this.length;
  if (i < 0) i = length + i;
  for (; i < length; i++)
    if (this[i] === item) return i;
  return -1;
};

if (!Array.prototype.lastIndexOf) Array.prototype.lastIndexOf = function(item, i) {
  i = isNaN(i) ? this.length : (i < 0 ? this.length + i : i) + 1;
  var n = this.slice(0, i).reverse().indexOf(item);
  return (n < 0) ? n : i - n - 1;
};

Array.prototype.toArray = Array.prototype.clone;

function $w(string) {
  if (!Object.isString(string)) return [];
  string = string.strip();
  return string ? string.split(/\s+/) : [];
}

if (Prototype.Browser.Opera){
  Array.prototype.concat = function() {
    var array = [];
    for (var i = 0, length = this.length; i < length; i++) array.push(this[i]);
    for (var i = 0, length = arguments.length; i < length; i++) {
      if (Object.isArray(arguments[i])) {
        for (var j = 0, arrayLength = arguments[i].length; j < arrayLength; j++)
          array.push(arguments[i][j]);
      } else {
        array.push(arguments[i]);
      }
    }
    return array;
  };
}
Object.extend(Number.prototype, {
  toColorPart: function() {
    return this.toPaddedString(2, 16);
  },

  succ: function() {
    return this + 1;
  },

  times: function(iterator) {
    $R(0, this, true).each(iterator);
    return this;
  },

  toPaddedString: function(length, radix) {
    var string = this.toString(radix || 10);
    return '0'.times(length - string.length) + string;
  },

  toJSON: function() {
    return isFinite(this) ? this.toString() : 'null';
  }
});

$w('abs round ceil floor').each(function(method){
  Number.prototype[method] = Math[method].methodize();
});
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {

  function toQueryPair(key, value) {
    if (Object.isUndefined(value)) return key;
    return key + '=' + encodeURIComponent(String.interpret(value));
  }

  return {
    initialize: function(object) {
      this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
    },

    _each: function(iterator) {
      for (var key in this._object) {
        var value = this._object[key], pair = [key, value];
        pair.key = key;
        pair.value = value;
        iterator(pair);
      }
    },

    set: function(key, value) {
      return this._object[key] = value;
    },

    get: function(key) {
      return this._object[key];
    },

    unset: function(key) {
      var value = this._object[key];
      delete this._object[key];
      return value;
    },

    toObject: function() {
      return Object.clone(this._object);
    },

    keys: function() {
      return this.pluck('key');
    },

    values: function() {
      return this.pluck('value');
    },

    index: function(value) {
      var match = this.detect(function(pair) {
        return pair.value === value;
      });
      return match && match.key;
    },

    merge: function(object) {
      return this.clone().update(object);
    },

    update: function(object) {
      return new Hash(object).inject(this, function(result, pair) {
        result.set(pair.key, pair.value);
        return result;
      });
    },

    toQueryString: function() {
      return this.map(function(pair) {
        var key = encodeURIComponent(pair.key), values = pair.value;

        if (values && typeof values == 'object') {
          if (Object.isArray(values))
            return values.map(toQueryPair.curry(key)).join('&');
        }
        return toQueryPair(key, values);
      }).join('&');
    },

    inspect: function() {
      return '#<Hash:{' + this.map(function(pair) {
        return pair.map(Object.inspect).join(': ');
      }).join(', ') + '}>';
    },

    toJSON: function() {
      return Object.toJSON(this.toObject());
    },

    clone: function() {
      return new Hash(this);
    }
  }
})());

Hash.prototype.toTemplateReplacements = Hash.prototype.toObject;
Hash.from = $H;
var ObjectRange = Class.create(Enumerable, {
  initialize: function(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  },

  _each: function(iterator) {
    var value = this.start;
    while (this.include(value)) {
      iterator(value);
      value = value.succ();
    }
  },

  include: function(value) {
    if (value < this.start)
      return false;
    if (this.exclusive)
      return value < this.end;
    return value <= this.end;
  }
});

var $R = function(start, end, exclusive) {
  return new ObjectRange(start, end, exclusive);
};

var Ajax = {
  getTransport: function() {
    return Try.these(
      function() {return new XMLHttpRequest()},
      function() {return new ActiveXObject('Msxml2.XMLHTTP')},
      function() {return new ActiveXObject('Microsoft.XMLHTTP')}
    ) || false;
  },

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

  _each: function(iterator) {
    this.responders._each(iterator);
  },

  register: function(responder) {
    if (!this.include(responder))
      this.responders.push(responder);
  },

  unregister: function(responder) {
    this.responders = this.responders.without(responder);
  },

  dispatch: function(callback, request, transport, json) {
    this.each(function(responder) {
      if (Object.isFunction(responder[callback])) {
        try {
          responder[callback].apply(responder, [request, transport, json]);
        } catch (e) { }
      }
    });
  }
};

Object.extend(Ajax.Responders, Enumerable);

Ajax.Responders.register({
  onCreate:   function() { Ajax.activeRequestCount++ },
  onComplete: function() { Ajax.activeRequestCount-- }
});

Ajax.Base = Class.create({
  initialize: function(options) {
    this.options = {
      method:       'post',
      asynchronous: true,
      contentType:  'application/x-www-form-urlencoded',
      encoding:     'UTF-8',
      parameters:   '',
      evalJSON:     true,
      evalJS:       true
    };
    Object.extend(this.options, options || { });

    this.options.method = this.options.method.toLowerCase();

    if (Object.isString(this.options.parameters))
      this.options.parameters = this.options.parameters.toQueryParams();
    else if (Object.isHash(this.options.parameters))
      this.options.parameters = this.options.parameters.toObject();
  }
});

Ajax.Request = Class.create(Ajax.Base, {
  _complete: false,

  initialize: function($super, url, options) {
    $super(options);
    this.transport = Ajax.getTransport();
    this.request(url);
  },

  request: function(url) {
    this.url = url;
    this.method = this.options.method;
    var params = Object.clone(this.options.parameters);

    if (!['get', 'post'].include(this.method)) {
      // simulate other verbs over post
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      // when GET, append parameters to URL
      if (this.method == 'get')
        this.url += (this.url.include('?') ? '&' : '?') + params;
      else if (/Konqueror|Safari|KHTML/.test(navigator.userAgent))
        params += '&_=';
    }

    try {
      var response = new Ajax.Response(this);
      if (this.options.onCreate) this.options.onCreate(response);
      Ajax.Responders.dispatch('onCreate', this, response);

      this.transport.open(this.method.toUpperCase(), this.url,
        this.options.asynchronous);

      if (this.options.asynchronous) this.respondToReadyState.bind(this).defer(1);

      this.transport.onreadystatechange = this.onStateChange.bind(this);
      this.setRequestHeaders();

      this.body = this.method == 'post' ? (this.options.postBody || params) : null;
      this.transport.send(this.body);

      /* Force Firefox to handle ready state 4 for synchronous requests */
      if (!this.options.asynchronous && this.transport.overrideMimeType)
        this.onStateChange();

    }
    catch (e) {
      this.dispatchException(e);
    }
  },

  onStateChange: function() {
    var readyState = this.transport.readyState;
    if (readyState > 1 && !((readyState == 4) && this._complete))
      this.respondToReadyState(this.transport.readyState);
  },

  setRequestHeaders: function() {
    var headers = {
      'X-Requested-With': 'XMLHttpRequest',
      'X-Prototype-Version': Prototype.Version,
      'Accept': 'text/javascript, text/html, application/xml, text/xml, */*'
    };

    if (this.method == 'post') {
      headers['Content-type'] = this.options.contentType +
        (this.options.encoding ? '; charset=' + this.options.encoding : '');

      /* Force "Connection: close" for older Mozilla browsers to work
       * around a bug where XMLHttpRequest sends an incorrect
       * Content-length header. See Mozilla Bugzilla #246651.
       */
      if (this.transport.overrideMimeType &&
          (navigator.userAgent.match(/Gecko\/(\d{4})/) || [0,2005])[1] < 2005)
            headers['Connection'] = 'close';
    }

    // user-defined headers
    if (typeof this.options.requestHeaders == 'object') {
      var extras = this.options.requestHeaders;

      if (Object.isFunction(extras.push))
        for (var i = 0, length = extras.length; i < length; i += 2)
          headers[extras[i]] = extras[i+1];
      else
        $H(extras).each(function(pair) { headers[pair.key] = pair.value });
    }

    for (var name in headers)
      this.transport.setRequestHeader(name, headers[name]);
  },

  success: function() {
    var status = this.getStatus();
    return !status || (status >= 200 && status < 300);
  },

  getStatus: function() {
    try {
      return this.transport.status || 0;
    } catch (e) { return 0 }
  },

  respondToReadyState: function(readyState) {
    var state = Ajax.Request.Events[readyState], response = new Ajax.Response(this);

    if (state == 'Complete') {
      try {
        this._complete = true;
        (this.options['on' + response.status]
         || this.options['on' + (this.success() ? 'Success' : 'Failure')]
         || Prototype.emptyFunction)(response, response.headerJSON);
      } catch (e) {
        this.dispatchException(e);
      }

      var contentType = response.getHeader('Content-type');
      if (this.options.evalJS == 'force'
          || (this.options.evalJS && this.isSameOrigin() && contentType
          && contentType.match(/^\s*(text|application)\/(x-)?(java|ecma)script(;.*)?\s*$/i)))
        this.evalResponse();
    }

    try {
      (this.options['on' + state] || Prototype.emptyFunction)(response, response.headerJSON);
      Ajax.Responders.dispatch('on' + state, this, response, response.headerJSON);
    } catch (e) {
      this.dispatchException(e);
    }

    if (state == 'Complete') {
      // avoid memory leak in MSIE: clean up
      this.transport.onreadystatechange = Prototype.emptyFunction;
    }
  },

  isSameOrigin: function() {
    var m = this.url.match(/^\s*https?:\/\/[^\/]*/);
    return !m || (m[0] == '#{protocol}//#{domain}#{port}'.interpolate({
      protocol: location.protocol,
      domain: document.domain,
      port: location.port ? ':' + location.port : ''
    }));
  },

  getHeader: function(name) {
    try {
      return this.transport.getResponseHeader(name) || null;
    } catch (e) { return null }
  },

  evalResponse: function() {
    try {
      return eval((this.transport.responseText || '').unfilterJSON());
    } catch (e) {
      this.dispatchException(e);
    }
  },

  dispatchException: function(exception) {
    (this.options.onException || Prototype.emptyFunction)(this, exception);
    Ajax.Responders.dispatch('onException', this, exception);
  }
});

Ajax.Request.Events =
  ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];

Ajax.Response = Class.create({
  initialize: function(request){
    this.request = request;
    var transport  = this.transport  = request.transport,
        readyState = this.readyState = transport.readyState;

    if((readyState > 2 && !Prototype.Browser.IE) || readyState == 4) {
      this.status       = this.getStatus();
      this.statusText   = this.getStatusText();
      this.responseText = String.interpret(transport.responseText);
      this.headerJSON   = this._getHeaderJSON();
    }

    if(readyState == 4) {
      var xml = transport.responseXML;
      this.responseXML  = Object.isUndefined(xml) ? null : xml;
      this.responseJSON = this._getResponseJSON();
    }
  },

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

  getStatusText: function() {
    try {
      return this.transport.statusText || '';
    } catch (e) { return '' }
  },

  getHeader: Ajax.Request.prototype.getHeader,

  getAllHeaders: function() {
    try {
      return this.getAllResponseHeaders();
    } catch (e) { return null }
  },

  getResponseHeader: function(name) {
    return this.transport.getResponseHeader(name);
  },

  getAllResponseHeaders: function() {
    return this.transport.getAllResponseHeaders();
  },

  _getHeaderJSON: function() {
    var json = this.getHeader('X-JSON');
    if (!json) return null;
    json = decodeURIComponent(escape(json));
    try {
      return json.evalJSON(this.request.options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  },

  _getResponseJSON: function() {
    var options = this.request.options;
    if (!options.evalJSON || (options.evalJSON != 'force' &&
      !(this.getHeader('Content-type') || '').include('application/json')) ||
        this.responseText.blank())
          return null;
    try {
      return this.responseText.evalJSON(options.sanitizeJSON ||
        !this.request.isSameOrigin());
    } catch (e) {
      this.request.dispatchException(e);
    }
  }
});

Ajax.Updater = Class.create(Ajax.Request, {
  initialize: function($super, container, url, options) {
    this.container = {
      success: (container.success || container),
      failure: (container.failure || (container.success ? null : container))
    };

    options = Object.clone(options);
    var onComplete = options.onComplete;
    options.onComplete = (function(response, json) {
      this.updateContent(response.responseText);
      if (Object.isFunction(onComplete)) onComplete(response, json);
    }).bind(this);

    $super(url, options);
  },

  updateContent: function(responseText) {
    var receiver = this.container[this.success() ? 'success' : 'failure'],
        options = this.options;

    if (!options.evalScripts) responseText = responseText.stripScripts();

    if (receiver = $(receiver)) {
      if (options.insertion) {
        if (Object.isString(options.insertion)) {
          var insertion = { }; insertion[options.insertion] = responseText;
          receiver.insert(insertion);
        }
        else options.insertion(receiver, responseText);
      }
      else receiver.update(responseText);
    }
  }
});

Ajax.PeriodicalUpdater = Class.create(Ajax.Base, {
  initialize: function($super, container, url, options) {
    $super(options);
    this.onComplete = this.options.onComplete;

    this.frequency = (this.options.frequency || 2);
    this.decay = (this.options.decay || 1);

    this.updater = { };
    this.container = container;
    this.url = url;

    this.start();
  },

  start: function() {
    this.options.onComplete = this.updateComplete.bind(this);
    this.onTimerEvent();
  },

  stop: function() {
    this.updater.options.onComplete = undefined;
    clearTimeout(this.timer);
    (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
  },

  updateComplete: function(response) {
    if (this.options.decay) {
      this.decay = (response.responseText == this.lastText ?
        this.decay * this.options.decay : 1);

      this.lastText = response.responseText;
    }
    this.timer = this.onTimerEvent.bind(this).delay(this.decay * this.frequency);
  },

  onTimerEvent: function() {
    this.updater = new Ajax.Updater(this.container, this.url, this.options);
  }
});
function $(element) {
  if (arguments.length > 1) {
    for (var i = 0, elements = [], length = arguments.length; i < length; i++)
      elements.push($(arguments[i]));
    return elements;
  }
  if (Object.isString(element))
    element = document.getElementById(element);
  return Element.extend(element);
}

if (Prototype.BrowserFeatures.XPath) {
  document._getElementsByXPath = function(expression, parentElement) {
    var results = [];
    var query = document.evaluate(expression, $(parentElement) || document,
      null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    for (var i = 0, length = query.snapshotLength; i < length; i++)
      results.push(Element.extend(query.snapshotItem(i)));
    return results;
  };
}

/*--------------------------------------------------------------------------*/

if (!window.Node) var Node = { };

if (!Node.ELEMENT_NODE) {
  // DOM level 2 ECMAScript Language Binding
  Object.extend(Node, {
    ELEMENT_NODE: 1,
    ATTRIBUTE_NODE: 2,
    TEXT_NODE: 3,
    CDATA_SECTION_NODE: 4,
    ENTITY_REFERENCE_NODE: 5,
    ENTITY_NODE: 6,
    PROCESSING_INSTRUCTION_NODE: 7,
    COMMENT_NODE: 8,
    DOCUMENT_NODE: 9,
    DOCUMENT_TYPE_NODE: 10,
    DOCUMENT_FRAGMENT_NODE: 11,
    NOTATION_NODE: 12
  });
}

(function() {
  var element = this.Element;
  this.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (Prototype.Browser.IE && attributes.name) {
      tagName = '<' + tagName + ' name="' + attributes.name + '">';
      delete attributes.name;
      return Element.writeAttribute(document.createElement(tagName), attributes);
    }
    if (!cache[tagName]) cache[tagName] = Element.extend(document.createElement(tagName));
    return Element.writeAttribute(cache[tagName].cloneNode(false), attributes);
  };
  Object.extend(this.Element, element || { });
}).call(window);

Element.cache = { };

Element.Methods = {
  visible: function(element) {
    return $(element).style.display != 'none';
  },

  toggle: function(element) {
    element = $(element);
    Element[Element.visible(element) ? 'hide' : 'show'](element);
    return element;
  },

  hide: function(element) {
    $(element).style.display = 'none';
    return element;
  },

  show: function(element) {
    $(element).style.display = '';
    return element;
  },

  remove: function(element) {
    element = $(element);
    element.parentNode.removeChild(element);
    return element;
  },

  update: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);
    content = Object.toHTML(content);
    element.innerHTML = content.stripScripts();
    content.evalScripts.bind(content).defer();
    return element;
  },

  replace: function(element, content) {
    element = $(element);
    if (content && content.toElement) content = content.toElement();
    else if (!Object.isElement(content)) {
      content = Object.toHTML(content);
      var range = element.ownerDocument.createRange();
      range.selectNode(element);
      content.evalScripts.bind(content).defer();
      content = range.createContextualFragment(content.stripScripts());
    }
    element.parentNode.replaceChild(content, element);
    return element;
  },

  insert: function(element, insertions) {
    element = $(element);

    if (Object.isString(insertions) || Object.isNumber(insertions) ||
        Object.isElement(insertions) || (insertions && (insertions.toElement || insertions.toHTML)))
          insertions = {bottom:insertions};

    var content, insert, tagName, childNodes;

    for (var position in insertions) {
      content  = insertions[position];
      position = position.toLowerCase();
      insert = Element._insertionTranslations[position];

      if (content && content.toElement) content = content.toElement();
      if (Object.isElement(content)) {
        insert(element, content);
        continue;
      }

      content = Object.toHTML(content);

      tagName = ((position == 'before' || position == 'after')
        ? element.parentNode : element).tagName.toUpperCase();

      childNodes = Element._getContentFromAnonymousElement(tagName, content.stripScripts());

      if (position == 'top' || position == 'after') childNodes.reverse();
      childNodes.each(insert.curry(element));

      content.evalScripts.bind(content).defer();
    }

    return element;
  },

  wrap: function(element, wrapper, attributes) {
    element = $(element);
    if (Object.isElement(wrapper))
      $(wrapper).writeAttribute(attributes || { });
    else if (Object.isString(wrapper)) wrapper = new Element(wrapper, attributes);
    else wrapper = new Element('div', wrapper);
    if (element.parentNode)
      element.parentNode.replaceChild(wrapper, element);
    wrapper.appendChild(element);
    return wrapper;
  },

  inspect: function(element) {
    element = $(element);
    var result = '<' + element.tagName.toLowerCase();
    $H({'id': 'id', 'className': 'class'}).each(function(pair) {
      var property = pair.first(), attribute = pair.last();
      var value = (element[property] || '').toString();
      if (value) result += ' ' + attribute + '=' + value.inspect(true);
    });
    return result + '>';
  },

  recursivelyCollect: function(element, property) {
    element = $(element);
    var elements = [];
    while (element = element[property])
      if (element.nodeType == 1)
        elements.push(Element.extend(element));
    return elements;
  },

  ancestors: function(element) {
    return $(element).recursivelyCollect('parentNode');
  },

  descendants: function(element) {
    return $(element).select("*");
  },

  firstDescendant: function(element) {
    element = $(element).firstChild;
    while (element && element.nodeType != 1) element = element.nextSibling;
    return $(element);
  },

  immediateDescendants: function(element) {
    if (!(element = $(element).firstChild)) return [];
    while (element && element.nodeType != 1) element = element.nextSibling;
    if (element) return [element].concat($(element).nextSiblings());
    return [];
  },

  previousSiblings: function(element) {
    return $(element).recursivelyCollect('previousSibling');
  },

  nextSiblings: function(element) {
    return $(element).recursivelyCollect('nextSibling');
  },

  siblings: function(element) {
    element = $(element);
    return element.previousSiblings().reverse().concat(element.nextSiblings());
  },

  match: function(element, selector) {
    if (Object.isString(selector))
      selector = new Selector(selector);
    return selector.match($(element));
  },

  up: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(element.parentNode);
    var ancestors = element.ancestors();
    return Object.isNumber(expression) ? ancestors[expression] :
      Selector.findElement(ancestors, expression, index);
  },

  down: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return element.firstDescendant();
    return Object.isNumber(expression) ? element.descendants()[expression] :
      element.select(expression)[index || 0];
  },

  previous: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.previousElementSibling(element));
    var previousSiblings = element.previousSiblings();
    return Object.isNumber(expression) ? previousSiblings[expression] :
      Selector.findElement(previousSiblings, expression, index);
  },

  next: function(element, expression, index) {
    element = $(element);
    if (arguments.length == 1) return $(Selector.handlers.nextElementSibling(element));
    var nextSiblings = element.nextSiblings();
    return Object.isNumber(expression) ? nextSiblings[expression] :
      Selector.findElement(nextSiblings, expression, index);
  },

  select: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element, args);
  },

  adjacent: function() {
    var args = $A(arguments), element = $(args.shift());
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = element.readAttribute('id'), self = arguments.callee;
    if (id) return id;
    do { id = 'anonymous_element_' + self.counter++ } while ($(id));
    element.writeAttribute('id', id);
    return id;
  },

  readAttribute: function(element, name) {
    element = $(element);
    if (Prototype.Browser.IE) {
      var t = Element._attributeTranslations.read;
      if (t.values[name]) return t.values[name](element, name);
      if (t.names[name]) name = t.names[name];
      if (name.include(':')) {
        return (!element.attributes || !element.attributes[name]) ? null :
         element.attributes[name].value;
      }
    }
    return element.getAttribute(name);
  },

  writeAttribute: function(element, name, value) {
    element = $(element);
    var attributes = { }, t = Element._attributeTranslations.write;

    if (typeof name == 'object') attributes = name;
    else attributes[name] = Object.isUndefined(value) ? true : value;

    for (var attr in attributes) {
      name = t.names[attr] || attr;
      value = attributes[attr];
      if (t.values[attr]) name = t.values[attr](element, value);
      if (value === false || value === null)
        element.removeAttribute(name);
      else if (value === true)
        element.setAttribute(name, name);
      else element.setAttribute(name, value);
    }
    return element;
  },

  getHeight: function(element) {
    return $(element).getDimensions().height;
  },

  getWidth: function(element) {
    return $(element).getDimensions().width;
  },

  classNames: function(element) {
    return new Element.ClassNames(element);
  },

  hasClassName: function(element, className) {
    if (!(element = $(element))) return;
    var elementClassName = element.className;
    return (elementClassName.length > 0 && (elementClassName == className ||
      new RegExp("(^|\\s)" + className + "(\\s|$)").test(elementClassName)));
  },

  addClassName: function(element, className) {
    if (!(element = $(element))) return;
    if (!element.hasClassName(className))
      element.className += (element.className ? ' ' : '') + className;
    return element;
  },

  removeClassName: function(element, className) {
    if (!(element = $(element))) return;
    element.className = element.className.replace(
      new RegExp("(^|\\s+)" + className + "(\\s+|$)"), ' ').strip();
    return element;
  },

  toggleClassName: function(element, className) {
    if (!(element = $(element))) return;
    return element[element.hasClassName(className) ?
      'removeClassName' : 'addClassName'](className);
  },

  // removes whitespace-only text node children
  cleanWhitespace: function(element) {
    element = $(element);
    var node = element.firstChild;
    while (node) {
      var nextNode = node.nextSibling;
      if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
        element.removeChild(node);
      node = nextNode;
    }
    return element;
  },

  empty: function(element) {
    return $(element).innerHTML.blank();
  },

  descendantOf: function(element, ancestor) {
    element = $(element), ancestor = $(ancestor);
    var originalAncestor = ancestor;

    if (element.compareDocumentPosition)
      return (element.compareDocumentPosition(ancestor) & 8) === 8;

    if (element.sourceIndex && !Prototype.Browser.Opera) {
      var e = element.sourceIndex, a = ancestor.sourceIndex,
       nextAncestor = ancestor.nextSibling;
      if (!nextAncestor) {
        do { ancestor = ancestor.parentNode; }
        while (!(nextAncestor = ancestor.nextSibling) && ancestor.parentNode);
      }
      if (nextAncestor && nextAncestor.sourceIndex)
       return (e > a && e < nextAncestor.sourceIndex);
    }

    while (element = element.parentNode)
      if (element == originalAncestor) return true;
    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = element.cumulativeOffset();
    window.scrollTo(pos[0], pos[1]);
    return element;
  },

  getStyle: function(element, style) {
    element = $(element);
    style = style == 'float' ? 'cssFloat' : style.camelize();
    var value = element.style[style];
    if (!value) {
      var css = document.defaultView.getComputedStyle(element, null);
      value = css ? css[style] : null;
    }
    if (style == 'opacity') return value ? parseFloat(value) : 1.0;
    return value == 'auto' ? null : value;
  },

  getOpacity: function(element) {
    return $(element).getStyle('opacity');
  },

  setStyle: function(element, styles) {
    element = $(element);
    var elementStyle = element.style, match;
    if (Object.isString(styles)) {
      element.style.cssText += ';' + styles;
      return styles.include('opacity') ?
        element.setOpacity(styles.match(/opacity:\s*(\d?\.?\d*)/)[1]) : element;
    }
    for (var property in styles)
      if (property == 'opacity') element.setOpacity(styles[property]);
      else
        elementStyle[(property == 'float' || property == 'cssFloat') ?
          (Object.isUndefined(elementStyle.styleFloat) ? 'cssFloat' : 'styleFloat') :
            property] = styles[property];

    return element;
  },

  setOpacity: function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;
    return element;
  },

  getDimensions: function(element) {
    element = $(element);
    var display = $(element).getStyle('display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    // All *Width and *Height properties give 0 on elements with display none,
    // so enable the element temporarily
    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    els.position = 'absolute';
    els.display = 'block';
    var originalWidth = element.clientWidth;
    var originalHeight = element.clientHeight;
    els.display = originalDisplay;
    els.position = originalPosition;
    els.visibility = originalVisibility;
    return {width: originalWidth, height: originalHeight};
  },

  makePositioned: function(element) {
    element = $(element);
    var pos = Element.getStyle(element, 'position');
    if (pos == 'static' || !pos) {
      element._madePositioned = true;
      element.style.position = 'relative';
      // Opera returns the offset relative to the positioning context, when an
      // element is position relative but top and left have not been defined
      if (window.opera) {
        element.style.top = 0;
        element.style.left = 0;
      }
    }
    return element;
  },

  undoPositioned: function(element) {
    element = $(element);
    if (element._madePositioned) {
      element._madePositioned = undefined;
      element.style.position =
        element.style.top =
        element.style.left =
        element.style.bottom =
        element.style.right = '';
    }
    return element;
  },

  makeClipping: function(element) {
    element = $(element);
    if (element._overflow) return element;
    element._overflow = Element.getStyle(element, 'overflow') || 'auto';
    if (element._overflow !== 'hidden')
      element.style.overflow = 'hidden';
    return element;
  },

  undoClipping: function(element) {
    element = $(element);
    if (!element._overflow) return element;
    element.style.overflow = element._overflow == 'auto' ? '' : element._overflow;
    element._overflow = null;
    return element;
  },

  cumulativeOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  positionedOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      element = element.offsetParent;
      if (element) {
        if (element.tagName == 'BODY') break;
        var p = Element.getStyle(element, 'position');
        if (p !== 'static') break;
      }
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  absolutize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'absolute') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    var offsets = element.positionedOffset();
    var top     = offsets[1];
    var left    = offsets[0];
    var width   = element.clientWidth;
    var height  = element.clientHeight;

    element._originalLeft   = left - parseFloat(element.style.left  || 0);
    element._originalTop    = top  - parseFloat(element.style.top || 0);
    element._originalWidth  = element.style.width;
    element._originalHeight = element.style.height;

    element.style.position = 'absolute';
    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.width  = width + 'px';
    element.style.height = height + 'px';
    return element;
  },

  relativize: function(element) {
    element = $(element);
    if (element.getStyle('position') == 'relative') return;
    // Position.prepare(); // To be done manually by Scripty when it needs it.

    element.style.position = 'relative';
    var top  = parseFloat(element.style.top  || 0) - (element._originalTop || 0);
    var left = parseFloat(element.style.left || 0) - (element._originalLeft || 0);

    element.style.top    = top + 'px';
    element.style.left   = left + 'px';
    element.style.height = element._originalHeight;
    element.style.width  = element._originalWidth;
    return element;
  },

  cumulativeScrollOffset: function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.scrollTop  || 0;
      valueL += element.scrollLeft || 0;
      element = element.parentNode;
    } while (element);
    return Element._returnOffset(valueL, valueT);
  },

  getOffsetParent: function(element) {
    if (element.offsetParent) return $(element.offsetParent);
    if (element == document.body) return $(element);

    while ((element = element.parentNode) && element != document.body)
      if (Element.getStyle(element, 'position') != 'static')
        return $(element);

    return $(document.body);
  },

  viewportOffset: function(forElement) {
    var valueT = 0, valueL = 0;

    var element = forElement;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;

      // Safari fix
      if (element.offsetParent == document.body &&
        Element.getStyle(element, 'position') == 'absolute') break;

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || element.tagName == 'BODY') {
        valueT -= element.scrollTop  || 0;
        valueL -= element.scrollLeft || 0;
      }
    } while (element = element.parentNode);

    return Element._returnOffset(valueL, valueT);
  },

  clonePosition: function(element, source) {
    var options = Object.extend({
      setLeft:    true,
      setTop:     true,
      setWidth:   true,
      setHeight:  true,
      offsetTop:  0,
      offsetLeft: 0
    }, arguments[2] || { });

    // find page position of source
    source = $(source);
    var p = source.viewportOffset();

    // find coordinate system to use
    element = $(element);
    var delta = [0, 0];
    var parent = null;
    // delta [0,0] will do fine with position: fixed elements,
    // position:absolute needs offsetParent deltas
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = element.getOffsetParent();
      delta = parent.viewportOffset();
    }

    // correct by body offsets (fixes Safari)
    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    // set position
    if (options.setLeft)   element.style.left  = (p[0] - delta[0] + options.offsetLeft) + 'px';
    if (options.setTop)    element.style.top   = (p[1] - delta[1] + options.offsetTop) + 'px';
    if (options.setWidth)  element.style.width = source.offsetWidth + 'px';
    if (options.setHeight) element.style.height = source.offsetHeight + 'px';
    return element;
  }
};

Element.Methods.identify.counter = 1;

Object.extend(Element.Methods, {
  getElementsBySelector: Element.Methods.select,
  childElements: Element.Methods.immediateDescendants
});

Element._attributeTranslations = {
  write: {
    names: {
      className: 'class',
      htmlFor:   'for'
    },
    values: { }
  }
};

if (Prototype.Browser.Opera) {
  Element.Methods.getStyle = Element.Methods.getStyle.wrap(
    function(proceed, element, style) {
      switch (style) {
        case 'left': case 'top': case 'right': case 'bottom':
          if (proceed(element, 'position') === 'static') return null;
        case 'height': case 'width':
          // returns '0px' for hidden elements; we want it to return null
          if (!Element.visible(element)) return null;

          // returns the border-box dimensions rather than the content-box
          // dimensions, so we subtract padding and borders from the value
          var dim = parseInt(proceed(element, style), 10);

          if (dim !== element['offset' + style.capitalize()])
            return dim + 'px';

          var properties;
          if (style === 'height') {
            properties = ['border-top-width', 'padding-top',
             'padding-bottom', 'border-bottom-width'];
          }
          else {
            properties = ['border-left-width', 'padding-left',
             'padding-right', 'border-right-width'];
          }
          return properties.inject(dim, function(memo, property) {
            var val = proceed(element, property);
            return val === null ? memo : memo - parseInt(val, 10);
          }) + 'px';
        default: return proceed(element, style);
      }
    }
  );

  Element.Methods.readAttribute = Element.Methods.readAttribute.wrap(
    function(proceed, element, attribute) {
      if (attribute === 'title') return element.title;
      return proceed(element, attribute);
    }
  );
}

else if (Prototype.Browser.IE) {
  // IE doesn't report offsets correctly for static elements, so we change them
  // to "relative" to get the values, then change them back.
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      var position = element.getStyle('position');
      if (position !== 'static') return proceed(element);
      element.setStyle({ position: 'relative' });
      var value = proceed(element);
      element.setStyle({ position: position });
      return value;
    }
  );

  $w('positionedOffset viewportOffset').each(function(method) {
    Element.Methods[method] = Element.Methods[method].wrap(
      function(proceed, element) {
        element = $(element);
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        // Trigger hasLayout on the offset parent so that IE6 reports
        // accurate offsetTop and offsetLeft values for position: fixed.
        var offsetParent = element.getOffsetParent();
        if (offsetParent && offsetParent.getStyle('position') === 'fixed')
          offsetParent.setStyle({ zoom: 1 });
        element.setStyle({ position: 'relative' });
        var value = proceed(element);
        element.setStyle({ position: position });
        return value;
      }
    );
  });

  Element.Methods.getStyle = function(element, style) {
    element = $(element);
    style = (style == 'float' || style == 'cssFloat') ? 'styleFloat' : style.camelize();
    var value = element.style[style];
    if (!value && element.currentStyle) value = element.currentStyle[style];

    if (style == 'opacity') {
      if (value = (element.getStyle('filter') || '').match(/alpha\(opacity=(.*)\)/))
        if (value[1]) return parseFloat(value[1]) / 100;
      return 1.0;
    }

    if (value == 'auto') {
      if ((style == 'width' || style == 'height') && (element.getStyle('display') != 'none'))
        return element['offset' + style.capitalize()] + 'px';
      return null;
    }
    return value;
  };

  Element.Methods.setOpacity = function(element, value) {
    function stripAlpha(filter){
      return filter.replace(/alpha\([^\)]*\)/gi,'');
    }
    element = $(element);
    var currentStyle = element.currentStyle;
    if ((currentStyle && !currentStyle.hasLayout) ||
      (!currentStyle && element.style.zoom == 'normal'))
        element.style.zoom = 1;

    var filter = element.getStyle('filter'), style = element.style;
    if (value == 1 || value === '') {
      (filter = stripAlpha(filter)) ?
        style.filter = filter : style.removeAttribute('filter');
      return element;
    } else if (value < 0.00001) value = 0;
    style.filter = stripAlpha(filter) +
      'alpha(opacity=' + (value * 100) + ')';
    return element;
  };

  Element._attributeTranslations = {
    read: {
      names: {
        'class': 'className',
        'for':   'htmlFor'
      },
      values: {
        _getAttr: function(element, attribute) {
          return element.getAttribute(attribute, 2);
        },
        _getAttrNode: function(element, attribute) {
          var node = element.getAttributeNode(attribute);
          return node ? node.value : "";
        },
        _getEv: function(element, attribute) {
          attribute = element.getAttribute(attribute);
          return attribute ? attribute.toString().slice(23, -2) : null;
        },
        _flag: function(element, attribute) {
          return $(element).hasAttribute(attribute) ? attribute : null;
        },
        style: function(element) {
          return element.style.cssText.toLowerCase();
        },
        title: function(element) {
          return element.title;
        }
      }
    }
  };

  Element._attributeTranslations.write = {
    names: Object.extend({
      cellpadding: 'cellPadding',
      cellspacing: 'cellSpacing'
    }, Element._attributeTranslations.read.names),
    values: {
      checked: function(element, value) {
        element.checked = !!value;
      },

      style: function(element, value) {
        element.style.cssText = value ? value : '';
      }
    }
  };

  Element._attributeTranslations.has = {};

  $w('colSpan rowSpan vAlign dateTime accessKey tabIndex ' +
      'encType maxLength readOnly longDesc').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr,
      src:         v._getAttr,
      type:        v._getAttr,
      action:      v._getAttrNode,
      disabled:    v._flag,
      checked:     v._flag,
      readonly:    v._flag,
      multiple:    v._flag,
      onload:      v._getEv,
      onunload:    v._getEv,
      onclick:     v._getEv,
      ondblclick:  v._getEv,
      onmousedown: v._getEv,
      onmouseup:   v._getEv,
      onmouseover: v._getEv,
      onmousemove: v._getEv,
      onmouseout:  v._getEv,
      onfocus:     v._getEv,
      onblur:      v._getEv,
      onkeypress:  v._getEv,
      onkeydown:   v._getEv,
      onkeyup:     v._getEv,
      onsubmit:    v._getEv,
      onreset:     v._getEv,
      onselect:    v._getEv,
      onchange:    v._getEv
    });
  })(Element._attributeTranslations.read.values);
}

else if (Prototype.Browser.Gecko && /rv:1\.8\.0/.test(navigator.userAgent)) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1) ? 0.999999 :
      (value === '') ? '' : (value < 0.00001) ? 0 : value;
    return element;
  };
}

else if (Prototype.Browser.WebKit) {
  Element.Methods.setOpacity = function(element, value) {
    element = $(element);
    element.style.opacity = (value == 1 || value === '') ? '' :
      (value < 0.00001) ? 0 : value;

    if (value == 1)
      if(element.tagName == 'IMG' && element.width) {
        element.width++; element.width--;
      } else try {
        var n = document.createTextNode(' ');
        element.appendChild(n);
        element.removeChild(n);
      } catch (e) { }

    return element;
  };

  // Safari returns margins on body which is incorrect if the child is absolutely
  // positioned.  For performance reasons, redefine Element#cumulativeOffset for
  // KHTML/WebKit only.
  Element.Methods.cumulativeOffset = function(element) {
    var valueT = 0, valueL = 0;
    do {
      valueT += element.offsetTop  || 0;
      valueL += element.offsetLeft || 0;
      if (element.offsetParent == document.body)
        if (Element.getStyle(element, 'position') == 'absolute') break;

      element = element.offsetParent;
    } while (element);

    return Element._returnOffset(valueL, valueT);
  };
}

if (Prototype.Browser.IE || Prototype.Browser.Opera) {
  // IE and Opera are missing .innerHTML support for TABLE-related and SELECT elements
  Element.Methods.update = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) return element.update().insert(content);

    content = Object.toHTML(content);
    var tagName = element.tagName.toUpperCase();

    if (tagName in Element._insertionTranslations.tags) {
      $A(element.childNodes).each(function(node) { element.removeChild(node) });
      Element._getContentFromAnonymousElement(tagName, content.stripScripts())
        .each(function(node) { element.appendChild(node) });
    }
    else element.innerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

if ('outerHTML' in document.createElement('div')) {
  Element.Methods.replace = function(element, content) {
    element = $(element);

    if (content && content.toElement) content = content.toElement();
    if (Object.isElement(content)) {
      element.parentNode.replaceChild(content, element);
      return element;
    }

    content = Object.toHTML(content);
    var parent = element.parentNode, tagName = parent.tagName.toUpperCase();

    if (Element._insertionTranslations.tags[tagName]) {
      var nextSibling = element.next();
      var fragments = Element._getContentFromAnonymousElement(tagName, content.stripScripts());
      parent.removeChild(element);
      if (nextSibling)
        fragments.each(function(node) { parent.insertBefore(node, nextSibling) });
      else
        fragments.each(function(node) { parent.appendChild(node) });
    }
    else element.outerHTML = content.stripScripts();

    content.evalScripts.bind(content).defer();
    return element;
  };
}

Element._returnOffset = function(l, t) {
  var result = [l, t];
  result.left = l;
  result.top = t;
  return result;
};

Element._getContentFromAnonymousElement = function(tagName, html) {
  var div = new Element('div'), t = Element._insertionTranslations.tags[tagName];
  if (t) {
    div.innerHTML = t[0] + html + t[1];
    t[2].times(function() { div = div.firstChild });
  } else div.innerHTML = html;
  return $A(div.childNodes);
};

Element._insertionTranslations = {
  before: function(element, node) {
    element.parentNode.insertBefore(node, element);
  },
  top: function(element, node) {
    element.insertBefore(node, element.firstChild);
  },
  bottom: function(element, node) {
    element.appendChild(node);
  },
  after: function(element, node) {
    element.parentNode.insertBefore(node, element.nextSibling);
  },
  tags: {
    TABLE:  ['<table>',                '</table>',                   1],
    TBODY:  ['<table><tbody>',         '</tbody></table>',           2],
    TR:     ['<table><tbody><tr>',     '</tr></tbody></table>',      3],
    TD:     ['<table><tbody><tr><td>', '</td></tr></tbody></table>', 4],
    SELECT: ['<select>',               '</select>',                  1]
  }
};

(function() {
  Object.extend(this.tags, {
    THEAD: this.tags.TBODY,
    TFOOT: this.tags.TBODY,
    TH:    this.tags.TD
  });
}).call(Element._insertionTranslations);

Element.Methods.Simulated = {
  hasAttribute: function(element, attribute) {
    attribute = Element._attributeTranslations.has[attribute] || attribute;
    var node = $(element).getAttributeNode(attribute);
    return node && node.specified;
  }
};

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

if (!Prototype.BrowserFeatures.ElementExtensions &&
    document.createElement('div').__proto__) {
  window.HTMLElement = { };
  window.HTMLElement.prototype = document.createElement('div').__proto__;
  Prototype.BrowserFeatures.ElementExtensions = true;
}

Element.extend = (function() {
  if (Prototype.BrowserFeatures.SpecificElementExtensions)
    return Prototype.K;

  var Methods = { }, ByTag = Element.Methods.ByTag;

  var extend = Object.extend(function(element) {
    if (!element || element._extendedByPrototype ||
        element.nodeType != 1 || element == window) return element;

    var methods = Object.clone(Methods),
      tagName = element.tagName, property, value;

    // extend methods for specific tags
    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    for (property in methods) {
      value = methods[property];
      if (Object.isFunction(value) && !(property in element))
        element[property] = value.methodize();
    }

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      // extend methods for all tags (Safari doesn't need this)
      if (!Prototype.BrowserFeatures.ElementExtensions) {
        Object.extend(Methods, Element.Methods);
        Object.extend(Methods, Element.Methods.Simulated);
      }
    }
  });

  extend.refresh();
  return extend;
})();

Element.hasAttribute = function(element, attribute) {
  if (element.hasAttribute) return element.hasAttribute(attribute);
  return Element.Methods.Simulated.hasAttribute(element, attribute);
};

Element.addMethods = function(methods) {
  var F = Prototype.BrowserFeatures, T = Element.Methods.ByTag;

  if (!methods) {
    Object.extend(Form, Form.Methods);
    Object.extend(Form.Element, Form.Element.Methods);
    Object.extend(Element.Methods.ByTag, {
      "FORM":     Object.clone(Form.Methods),
      "INPUT":    Object.clone(Form.Element.Methods),
      "SELECT":   Object.clone(Form.Element.Methods),
      "TEXTAREA": Object.clone(Form.Element.Methods)
    });
  }

  if (arguments.length == 2) {
    var tagName = methods;
    methods = arguments[1];
  }

  if (!tagName) Object.extend(Element.Methods, methods || { });
  else {
    if (Object.isArray(tagName)) tagName.each(extend);
    else extend(tagName);
  }

  function extend(tagName) {
    tagName = tagName.toUpperCase();
    if (!Element.Methods.ByTag[tagName])
      Element.Methods.ByTag[tagName] = { };
    Object.extend(Element.Methods.ByTag[tagName], methods);
  }

  function copy(methods, destination, onlyIfAbsent) {
    onlyIfAbsent = onlyIfAbsent || false;
    for (var property in methods) {
      var value = methods[property];
      if (!Object.isFunction(value)) continue;
      if (!onlyIfAbsent || !(property in destination))
        destination[property] = value.methodize();
    }
  }

  function findDOMClass(tagName) {
    var klass;
    var trans = {
      "OPTGROUP": "OptGroup", "TEXTAREA": "TextArea", "P": "Paragraph",
      "FIELDSET": "FieldSet", "UL": "UList", "OL": "OList", "DL": "DList",
      "DIR": "Directory", "H1": "Heading", "H2": "Heading", "H3": "Heading",
      "H4": "Heading", "H5": "Heading", "H6": "Heading", "Q": "Quote",
      "INS": "Mod", "DEL": "Mod", "A": "Anchor", "IMG": "Image", "CAPTION":
      "TableCaption", "COL": "TableCol", "COLGROUP": "TableCol", "THEAD":
      "TableSection", "TFOOT": "TableSection", "TBODY": "TableSection", "TR":
      "TableRow", "TH": "TableCell", "TD": "TableCell", "FRAMESET":
      "FrameSet", "IFRAME": "IFrame"
    };
    if (trans[tagName]) klass = 'HTML' + trans[tagName] + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName + 'Element';
    if (window[klass]) return window[klass];
    klass = 'HTML' + tagName.capitalize() + 'Element';
    if (window[klass]) return window[klass];

    window[klass] = { };
    window[klass].prototype = document.createElement(tagName).__proto__;
    return window[klass];
  }

  if (F.ElementExtensions) {
    copy(Element.Methods, HTMLElement.prototype);
    copy(Element.Methods.Simulated, HTMLElement.prototype, true);
  }

  if (F.SpecificElementExtensions) {
    for (var tag in Element.Methods.ByTag) {
      var klass = findDOMClass(tag);
      if (Object.isUndefined(klass)) continue;
      copy(T[tag], klass.prototype);
    }
  }

  Object.extend(Element, Element.Methods);
  delete Element.ByTag;

  if (Element.extend.refresh) Element.extend.refresh();
  Element.cache = { };
};

document.viewport = {
  getDimensions: function() {
    var dimensions = { };
    var B = Prototype.Browser;
    $w('width height').each(function(d) {
      var D = d.capitalize();
      dimensions[d] = (B.WebKit && !document.evaluate) ? self['inner' + D] :
        (B.Opera) ? document.body['client' + D] : document.documentElement['client' + D];
    });
    return dimensions;
  },

  getWidth: function() {
    return this.getDimensions().width;
  },

  getHeight: function() {
    return this.getDimensions().height;
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop || document.body.scrollTop);
  }
};
/* Portions of the Selector class are derived from Jack Slocum’s DomQuery,
 * part of YUI-Ext version 0.40, distributed under the terms of an MIT-style
 * license.  Please see http://www.yui-ext.com/ for more information. */

var Selector = Class.create({
  initialize: function(expression) {
    this.expression = expression.strip();
    this.compileMatcher();
  },

  shouldUseXPath: function() {
    if (!Prototype.BrowserFeatures.XPath) return false;

    var e = this.expression;

    // Safari 3 chokes on :*-of-type and :empty
    if (Prototype.Browser.WebKit &&
     (e.include("-of-type") || e.include(":empty")))
      return false;

    // XPath can't do namespaced attributes, nor can it read
    // the "checked" property from DOM nodes
    if ((/(\[[\w-]*?:|:checked)/).test(this.expression))
      return false;

    return true;
  },

  compileMatcher: function() {
    if (this.shouldUseXPath())
      return this.compileXPathMatcher();

    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m;

    if (Selector._cache[e]) {
      this.matcher = Selector._cache[e];
      return;
    }

    this.matcher = ["this.matcher = function(root) {",
                    "var r = root, h = Selector.handlers, c = false, n;"];

    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[i]) ? c[i](m) :
    	      new Template(c[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.matcher.push("return h.unique(n);\n}");
    eval(this.matcher.join('\n'));
    Selector._cache[this.expression] = this.matcher;
  },

  compileXPathMatcher: function() {
    var e = this.expression, ps = Selector.patterns,
        x = Selector.xpath, le, m;

    if (Selector._cache[e]) {
      this.xpath = Selector._cache[e]; return;
    }

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        if (m = e.match(ps[i])) {
          this.matcher.push(Object.isFunction(x[i]) ? x[i](m) :
            new Template(x[i]).evaluate(m));
          e = e.replace(m[0], '');
          break;
        }
      }
    }

    this.xpath = this.matcher.join('');
    Selector._cache[this.expression] = this.xpath;
  },

  findElements: function(root) {
    root = root || document;
    if (this.xpath) return document._getElementsByXPath(this.xpath, root);
    return this.matcher(root);
  },

  match: function(element) {
    this.tokens = [];

    var e = this.expression, ps = Selector.patterns, as = Selector.assertions;
    var le, p, m;

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i in ps) {
        p = ps[i];
        if (m = e.match(p)) {
          // use the Selector.assertions methods unless the selector
          // is too complex.
          if (as[i]) {
            this.tokens.push([i, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            // reluctantly do a document-wide search
            // and look for a match in the array
            return this.findElements(document).include(element);
          }
        }
      }
    }

    var match = true, name, matches;
    for (var i = 0, token; token = this.tokens[i]; i++) {
      name = token[0], matches = token[1];
      if (!Selector.assertions[name](element, matches)) {
        match = false; break;
      }
    }

    return match;
  },

  toString: function() {
    return this.expression;
  },

  inspect: function() {
    return "#<Selector:" + this.expression.inspect() + ">";
  }
});

Object.extend(Selector, {
  _cache: { },

  xpath: {
    descendant:   "//*",
    child:        "/*",
    adjacent:     "/following-sibling::*[1]",
    laterSibling: '/following-sibling::*',
    tagName:      function(m) {
      if (m[1] == '*') return '';
      return "[local-name()='" + m[1].toLowerCase() +
             "' or local-name()='" + m[1].toUpperCase() + "']";
    },
    className:    "[contains(concat(' ', @class, ' '), ' #{1} ')]",
    id:           "[@id='#{1}']",
    attrPresence: function(m) {
      m[1] = m[1].toLowerCase();
      return new Template("[@#{1}]").evaluate(m);
    },
    attr: function(m) {
      m[1] = m[1].toLowerCase();
      m[3] = m[5] || m[6];
      return new Template(Selector.xpath.operators[m[2]]).evaluate(m);
    },
    pseudo: function(m) {
      var h = Selector.xpath.pseudos[m[1]];
      if (!h) return '';
      if (Object.isFunction(h)) return h(m);
      return new Template(Selector.xpath.pseudos[m[1]]).evaluate(m);
    },
    operators: {
      '=':  "[@#{1}='#{3}']",
      '!=': "[@#{1}!='#{3}']",
      '^=': "[starts-with(@#{1}, '#{3}')]",
      '$=': "[substring(@#{1}, (string-length(@#{1}) - string-length('#{3}') + 1))='#{3}']",
      '*=': "[contains(@#{1}, '#{3}')]",
      '~=': "[contains(concat(' ', @#{1}, ' '), ' #{3} ')]",
      '|=': "[contains(concat('-', @#{1}, '-'), '-#{3}-')]"
    },
    pseudos: {
      'first-child': '[not(preceding-sibling::*)]',
      'last-child':  '[not(following-sibling::*)]',
      'only-child':  '[not(preceding-sibling::* or following-sibling::*)]',
      'empty':       "[count(*) = 0 and (count(text()) = 0 or translate(text(), ' \t\r\n', '') = '')]",
      'checked':     "[@checked]",
      'disabled':    "[@disabled]",
      'enabled':     "[not(@disabled)]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i in p) {
            if (m = e.match(p[i])) {
              v = Object.isFunction(x[i]) ? x[i](m) : new Template(x[i]).evaluate(m);
              exclusion.push("(" + v.substring(1, v.length - 1) + ")");
              e = e.replace(m[0], '');
              break;
            }
          }
        }
        return "[not(" + exclusion.join(" and ") + ")]";
      },
      'nth-child':      function(m) {
        return Selector.xpath.pseudos.nth("(count(./preceding-sibling::*) + 1) ", m);
      },
      'nth-last-child': function(m) {
        return Selector.xpath.pseudos.nth("(count(./following-sibling::*) + 1) ", m);
      },
      'nth-of-type':    function(m) {
        return Selector.xpath.pseudos.nth("position() ", m);
      },
      'nth-last-of-type': function(m) {
        return Selector.xpath.pseudos.nth("(last() + 1 - position()) ", m);
      },
      'first-of-type':  function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-of-type'](m);
      },
      'last-of-type':   function(m) {
        m[6] = "1"; return Selector.xpath.pseudos['nth-last-of-type'](m);
      },
      'only-of-type':   function(m) {
        var p = Selector.xpath.pseudos; return p['first-of-type'](m) + p['last-of-type'](m);
      },
      nth: function(fragment, m) {
        var mm, formula = m[6], predicate;
        if (formula == 'even') formula = '2n+0';
        if (formula == 'odd')  formula = '2n+1';
        if (mm = formula.match(/^(\d+)$/)) // digit only
          return '[' + fragment + "= " + mm[1] + ']';
        if (mm = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
          if (mm[1] == "-") mm[1] = -1;
          var a = mm[1] ? Number(mm[1]) : 1;
          var b = mm[2] ? Number(mm[2]) : 0;
          predicate = "[((#{fragment} - #{b}) mod #{a} = 0) and " +
          "((#{fragment} - #{b}) div #{a} >= 0)]";
          return new Template(predicate).evaluate({
            fragment: fragment, a: a, b: b });
        }
      }
    }
  },

  criteria: {
    tagName:      'n = h.tagName(n, r, "#{1}", c);      c = false;',
    className:    'n = h.className(n, r, "#{1}", c);    c = false;',
    id:           'n = h.id(n, r, "#{1}", c);           c = false;',
    attrPresence: 'n = h.attrPresence(n, r, "#{1}", c); c = false;',
    attr: function(m) {
      m[3] = (m[5] || m[6]);
      return new Template('n = h.attr(n, r, "#{1}", "#{3}", "#{2}", c); c = false;').evaluate(m);
    },
    pseudo: function(m) {
      if (m[6]) m[6] = m[6].replace(/"/g, '\\"');
      return new Template('n = h.pseudo(n, "#{1}", "#{6}", r, c); c = false;').evaluate(m);
    },
    descendant:   'c = "descendant";',
    child:        'c = "child";',
    adjacent:     'c = "adjacent";',
    laterSibling: 'c = "laterSibling";'
  },

  patterns: {
    // combinators must be listed first
    // (and descendant needs to be last combinator)
    laterSibling: /^\s*~\s*/,
    child:        /^\s*>\s*/,
    adjacent:     /^\s*\+\s*/,
    descendant:   /^\s/,

    // selectors follow
    tagName:      /^\s*(\*|[\w\-]+)(\b|$)?/,
    id:           /^#([\w\-\*]+)(\b|$)/,
    className:    /^\.([\w\-\*]+)(\b|$)/,
    pseudo:
/^:((first|last|nth|nth-last|only)(-child|-of-type)|empty|checked|(en|dis)abled|not)(\((.*?)\))?(\b|$|(?=\s|[:+~>]))/,
    attrPresence: /^\[([\w]+)\]/,
    attr:         /\[((?:[\w-]*:)?[\w-]+)\s*(?:([!^$*~|]?=)\s*((['"])([^\4]*?)\4|([^'"][^\]]*?)))?\]/
  },

  // for Selector.match and Element#match
  assertions: {
    tagName: function(element, matches) {
      return matches[1].toUpperCase() == element.tagName.toUpperCase();
    },

    className: function(element, matches) {
      return Element.hasClassName(element, matches[1]);
    },

    id: function(element, matches) {
      return element.id === matches[1];
    },

    attrPresence: function(element, matches) {
      return Element.hasAttribute(element, matches[1]);
    },

    attr: function(element, matches) {
      var nodeValue = Element.readAttribute(element, matches[1]);
      return nodeValue && Selector.operators[matches[2]](nodeValue, matches[5] || matches[6]);
    }
  },

  handlers: {
    // UTILITY FUNCTIONS
    // joins two collections
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

    // marks an array of nodes for counting
    mark: function(nodes) {
      var _true = Prototype.emptyFunction;
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = _true;
      return nodes;
    },

    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node._countedByPrototype = undefined;
      return nodes;
    },

    // mark each child node with its position (for nth calls)
    // "ofType" flag indicates whether we're indexing for nth-of-type
    // rather than nth-child
    index: function(parentNode, reverse, ofType) {
      parentNode._countedByPrototype = Prototype.emptyFunction;
      if (reverse) {
        for (var nodes = parentNode.childNodes, i = nodes.length - 1, j = 1; i >= 0; i--) {
          var node = nodes[i];
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
        }
      } else {
        for (var i = 0, j = 1, nodes = parentNode.childNodes; node = nodes[i]; i++)
          if (node.nodeType == 1 && (!ofType || node._countedByPrototype)) node.nodeIndex = j++;
      }
    },

    // filters out duplicates and extends all nodes
    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (!(n = nodes[i])._countedByPrototype) {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    // COMBINATOR FUNCTIONS
    descendant: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, node.getElementsByTagName('*'));
      return results;
    },

    child: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        for (var j = 0, child; child = node.childNodes[j]; j++)
          if (child.nodeType == 1 && child.tagName != '!') results.push(child);
      }
      return results;
    },

    adjacent: function(nodes) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        var next = this.nextElementSibling(node);
        if (next) results.push(next);
      }
      return results;
    },

    laterSibling: function(nodes) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        h.concat(results, Element.nextSiblings(node));
      return results;
    },

    nextElementSibling: function(node) {
      while (node = node.nextSibling)
	      if (node.nodeType == 1) return node;
      return null;
    },

    previousElementSibling: function(node) {
      while (node = node.previousSibling)
        if (node.nodeType == 1) return node;
      return null;
    },

    // TOKEN FUNCTIONS
    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          // fastlane for ordinary descendant combinators
          if (combinator == "descendant") {
            for (var i = 0, node; node = nodes[i]; i++)
              h.concat(results, node.getElementsByTagName(tagName));
            return results;
          } else nodes = this[combinator](nodes);
          if (tagName == "*") return nodes;
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName.toUpperCase() === uTagName) results.push(node);
        return results;
      } else return root.getElementsByTagName(tagName);
    },

    id: function(nodes, root, id, combinator) {
      var targetNode = $(id), h = Selector.handlers;
      if (!targetNode) return [];
      if (!nodes && root == document) return [targetNode];
      if (nodes) {
        if (combinator) {
          if (combinator == 'child') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (targetNode.parentNode == node) return [targetNode];
          } else if (combinator == 'descendant') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Element.descendantOf(targetNode, node)) return [targetNode];
          } else if (combinator == 'adjacent') {
            for (var i = 0, node; node = nodes[i]; i++)
              if (Selector.handlers.previousElementSibling(targetNode) == node)
                return [targetNode];
          } else nodes = h[combinator](nodes);
        }
        for (var i = 0, node; node = nodes[i]; i++)
          if (node == targetNode) return [targetNode];
        return [];
      }
      return (targetNode && Element.descendantOf(targetNode, root)) ? [targetNode] : [];
    },

    className: function(nodes, root, className, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      return Selector.handlers.byClassName(nodes, root, className);
    },

    byClassName: function(nodes, root, className) {
      if (!nodes) nodes = Selector.handlers.descendant([root]);
      var needle = ' ' + className + ' ';
      for (var i = 0, results = [], node, nodeClassName; node = nodes[i]; i++) {
        nodeClassName = node.className;
        if (nodeClassName.length == 0) continue;
        if (nodeClassName == className || (' ' + nodeClassName + ' ').include(needle))
          results.push(node);
      }
      return results;
    },

    attrPresence: function(nodes, root, attr, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var results = [];
      for (var i = 0, node; node = nodes[i]; i++)
        if (Element.hasAttribute(node, attr)) results.push(node);
      return results;
    },

    attr: function(nodes, root, attr, value, operator, combinator) {
      if (!nodes) nodes = root.getElementsByTagName("*");
      if (nodes && combinator) nodes = this[combinator](nodes);
      var handler = Selector.operators[operator], results = [];
      for (var i = 0, node; node = nodes[i]; i++) {
        var nodeValue = Element.readAttribute(node, attr);
        if (nodeValue === null) continue;
        if (handler(nodeValue, value)) results.push(node);
      }
      return results;
    },

    pseudo: function(nodes, name, value, root, combinator) {
      if (nodes && combinator) nodes = this[combinator](nodes);
      if (!nodes) nodes = root.getElementsByTagName("*");
      return Selector.pseudos[name](nodes, value, root);
    }
  },

  pseudos: {
    'first-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.previousElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'last-child': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        if (Selector.handlers.nextElementSibling(node)) continue;
          results.push(node);
      }
      return results;
    },
    'only-child': function(nodes, value, root) {
      var h = Selector.handlers;
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!h.previousElementSibling(node) && !h.nextElementSibling(node))
          results.push(node);
      return results;
    },
    'nth-child':        function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root);
    },
    'nth-last-child':   function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true);
    },
    'nth-of-type':      function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, false, true);
    },
    'nth-last-of-type': function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, formula, root, true, true);
    },
    'first-of-type':    function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, false, true);
    },
    'last-of-type':     function(nodes, formula, root) {
      return Selector.pseudos.nth(nodes, "1", root, true, true);
    },
    'only-of-type':     function(nodes, formula, root) {
      var p = Selector.pseudos;
      return p['last-of-type'](p['first-of-type'](nodes, formula, root), formula, root);
    },

    // handles the an+b logic
    getIndices: function(a, b, total) {
      if (a == 0) return b > 0 ? [b] : [];
      return $R(1, total).inject([], function(memo, i) {
        if (0 == (i - b) % a && (i - b) / a >= 0) memo.push(i);
        return memo;
      });
    },

    // handles nth(-last)-child, nth(-last)-of-type, and (first|last)-of-type
    nth: function(nodes, formula, root, reverse, ofType) {
      if (nodes.length == 0) return [];
      if (formula == 'even') formula = '2n+0';
      if (formula == 'odd')  formula = '2n+1';
      var h = Selector.handlers, results = [], indexed = [], m;
      h.mark(nodes);
      for (var i = 0, node; node = nodes[i]; i++) {
        if (!node.parentNode._countedByPrototype) {
          h.index(node.parentNode, reverse, ofType);
          indexed.push(node.parentNode);
        }
      }
      if (formula.match(/^\d+$/)) { // just a number
        formula = Number(formula);
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.nodeIndex == formula) results.push(node);
      } else if (m = formula.match(/^(-?\d*)?n(([+-])(\d+))?/)) { // an+b
        if (m[1] == "-") m[1] = -1;
        var a = m[1] ? Number(m[1]) : 1;
        var b = m[2] ? Number(m[2]) : 0;
        var indices = Selector.pseudos.getIndices(a, b, nodes.length);
        for (var i = 0, node, l = indices.length; node = nodes[i]; i++) {
          for (var j = 0; j < l; j++)
            if (node.nodeIndex == indices[j]) results.push(node);
        }
      }
      h.unmark(nodes);
      h.unmark(indexed);
      return results;
    },

    'empty': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++) {
        // IE treats comments as element nodes
        if (node.tagName == '!' || (node.firstChild && !node.innerHTML.match(/^\s*$/))) continue;
        results.push(node);
      }
      return results;
    },

    'not': function(nodes, selector, root) {
      var h = Selector.handlers, selectorType, m;
      var exclusions = new Selector(selector).findElements(root);
      h.mark(exclusions);
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node._countedByPrototype) results.push(node);
      h.unmark(exclusions);
      return results;
    },

    'enabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (!node.disabled) results.push(node);
      return results;
    },

    'disabled': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.disabled) results.push(node);
      return results;
    },

    'checked': function(nodes, value, root) {
      for (var i = 0, results = [], node; node = nodes[i]; i++)
        if (node.checked) results.push(node);
      return results;
    }
  },

  operators: {
    '=':  function(nv, v) { return nv == v; },
    '!=': function(nv, v) { return nv != v; },
    '^=': function(nv, v) { return nv.startsWith(v); },
    '$=': function(nv, v) { return nv.endsWith(v); },
    '*=': function(nv, v) { return nv.include(v); },
    '~=': function(nv, v) { return (' ' + nv + ' ').include(' ' + v + ' '); },
    '|=': function(nv, v) { return ('-' + nv.toUpperCase() + '-').include('-' + v.toUpperCase() + '-'); }
  },

  split: function(expression) {
    var expressions = [];
    expression.scan(/(([\w#:.~>+()\s-]+|\*|\[.*?\])+)\s*(,|$)/, function(m) {
      expressions.push(m[1].strip());
    });
    return expressions;
  },

  matchElements: function(elements, expression) {
    var matches = $$(expression), h = Selector.handlers;
    h.mark(matches);
    for (var i = 0, results = [], element; element = elements[i]; i++)
      if (element._countedByPrototype) results.push(element);
    h.unmark(matches);
    return results;
  },

  findElement: function(elements, expression, index) {
    if (Object.isNumber(expression)) {
      index = expression; expression = false;
    }
    return Selector.matchElements(elements, expression || '*')[index || 0];
  },

  findChildElements: function(element, expressions) {
    expressions = Selector.split(expressions.join(','));
    var results = [], h = Selector.handlers;
    for (var i = 0, l = expressions.length, selector; i < l; i++) {
      selector = new Selector(expressions[i].strip());
      h.concat(results, selector.findElements(element));
    }
    return (l > 1) ? h.unique(results) : results;
  }
});

if (Prototype.Browser.IE) {
  Object.extend(Selector.handlers, {
    // IE returns comment nodes on getElementsByTagName("*").
    // Filter them out.
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    },

    // IE improperly serializes _countedByPrototype in (inner|outer)HTML.
    unmark: function(nodes) {
      for (var i = 0, node; node = nodes[i]; i++)
        node.removeAttribute('_countedByPrototype');
      return nodes;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}
var Form = {
  reset: function(form) {
    $(form).reset();
    return form;
  },

  serializeElements: function(elements, options) {
    if (typeof options != 'object') options = { hash: !!options };
    else if (Object.isUndefined(options.hash)) options.hash = true;
    var key, value, submitted = false, submit = options.submit;

    var data = elements.inject({ }, function(result, element) {
      if (!element.disabled && element.name) {
        key = element.name; value = $(element).getValue();
        if (value != null && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            // a key is already present; construct an array of values
            if (!Object.isArray(result[key])) result[key] = [result[key]];
            result[key].push(value);
          }
          else result[key] = value;
        }
      }
      return result;
    });

    return options.hash ? data : Object.toQueryString(data);
  }
};

Form.Methods = {
  serialize: function(form, options) {
    return Form.serializeElements(Form.getElements(form), options);
  },

  getElements: function(form) {
    return $A($(form).getElementsByTagName('*')).inject([],
      function(elements, child) {
        if (Form.Element.Serializers[child.tagName.toLowerCase()])
          elements.push(Element.extend(child));
        return elements;
      }
    );
  },

  getInputs: function(form, typeName, name) {
    form = $(form);
    var inputs = form.getElementsByTagName('input');

    if (!typeName && !name) return $A(inputs).map(Element.extend);

    for (var i = 0, matchingInputs = [], length = inputs.length; i < length; i++) {
      var input = inputs[i];
      if ((typeName && input.type != typeName) || (name && input.name != name))
        continue;
      matchingInputs.push(Element.extend(input));
    }

    return matchingInputs;
  },

  disable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('disable');
    return form;
  },

  enable: function(form) {
    form = $(form);
    Form.getElements(form).invoke('enable');
    return form;
  },

  findFirstElement: function(form) {
    var elements = $(form).getElements().findAll(function(element) {
      return 'hidden' != element.type && !element.disabled;
    });
    var firstByIndex = elements.findAll(function(element) {
      return element.hasAttribute('tabIndex') && element.tabIndex >= 0;
    }).sortBy(function(element) { return element.tabIndex }).first();

    return firstByIndex ? firstByIndex : elements.find(function(element) {
      return ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
    });
  },

  focusFirstElement: function(form) {
    form = $(form);
    form.findFirstElement().activate();
    return form;
  },

  request: function(form, options) {
    form = $(form), options = Object.clone(options || { });

    var params = options.parameters, action = form.readAttribute('action') || '';
    if (action.blank()) action = window.location.href;
    options.parameters = form.serialize(true);

    if (params) {
      if (Object.isString(params)) params = params.toQueryParams();
      Object.extend(options.parameters, params);
    }

    if (form.hasAttribute('method') && !options.method)
      options.method = form.method;

    return new Ajax.Request(action, options);
  }
};

/*--------------------------------------------------------------------------*/

Form.Element = {
  focus: function(element) {
    $(element).focus();
    return element;
  },

  select: function(element) {
    $(element).select();
    return element;
  }
};

Form.Element.Methods = {
  serialize: function(element) {
    element = $(element);
    if (!element.disabled && element.name) {
      var value = element.getValue();
      if (value != undefined) {
        var pair = { };
        pair[element.name] = value;
        return Object.toQueryString(pair);
      }
    }
    return '';
  },

  getValue: function(element) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    return Form.Element.Serializers[method](element);
  },

  setValue: function(element, value) {
    element = $(element);
    var method = element.tagName.toLowerCase();
    Form.Element.Serializers[method](element, value);
    return element;
  },

  clear: function(element) {
    $(element).value = '';
    return element;
  },

  present: function(element) {
    return $(element).value != '';
  },

  activate: function(element) {
    element = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !['button', 'reset', 'submit'].include(element.type)))
        element.select();
    } catch (e) { }
    return element;
  },

  disable: function(element) {
    element = $(element);
    element.blur();
    element.disabled = true;
    return element;
  },

  enable: function(element) {
    element = $(element);
    element.disabled = false;
    return element;
  }
};

/*--------------------------------------------------------------------------*/

var Field = Form.Element;
var $F = Form.Element.Methods.getValue;

/*--------------------------------------------------------------------------*/

Form.Element.Serializers = {
  input: function(element, value) {
    switch (element.type.toLowerCase()) {
      case 'checkbox':
      case 'radio':
        return Form.Element.Serializers.inputSelector(element, value);
      default:
        return Form.Element.Serializers.textarea(element, value);
    }
  },

  inputSelector: function(element, value) {
    if (Object.isUndefined(value)) return element.checked ? element.value : null;
    else element.checked = !!value;
  },

  textarea: function(element, value) {
    if (Object.isUndefined(value)) return element.value;
    else element.value = value;
  },

  select: function(element, index) {
    if (Object.isUndefined(index))
      return this[element.type == 'select-one' ?
        'selectOne' : 'selectMany'](element);
    else {
      var opt, value, single = !Object.isArray(index);
      for (var i = 0, length = element.length; i < length; i++) {
        opt = element.options[i];
        value = this.optionValue(opt);
        if (single) {
          if (value == index) {
            opt.selected = true;
            return;
          }
        }
        else opt.selected = index.include(value);
      }
    }
  },

  selectOne: function(element) {
    var index = element.selectedIndex;
    return index >= 0 ? this.optionValue(element.options[index]) : null;
  },

  selectMany: function(element) {
    var values, length = element.length;
    if (!length) return null;

    for (var i = 0, values = []; i < length; i++) {
      var opt = element.options[i];
      if (opt.selected) values.push(this.optionValue(opt));
    }
    return values;
  },

  optionValue: function(opt) {
    // extend element because hasAttribute may not be native
    return Element.extend(opt).hasAttribute('value') ? opt.value : opt.text;
  }
};

/*--------------------------------------------------------------------------*/

Abstract.TimedObserver = Class.create(PeriodicalExecuter, {
  initialize: function($super, element, frequency, callback) {
    $super(callback, frequency);
    this.element   = $(element);
    this.lastValue = this.getValue();
  },

  execute: function() {
    var value = this.getValue();
    if (Object.isString(this.lastValue) && Object.isString(value) ?
        this.lastValue != value : String(this.lastValue) != String(value)) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  }
});

Form.Element.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.Observer = Class.create(Abstract.TimedObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});

/*--------------------------------------------------------------------------*/

Abstract.EventObserver = Class.create({
  initialize: function(element, callback) {
    this.element  = $(element);
    this.callback = callback;

    this.lastValue = this.getValue();
    if (this.element.tagName.toLowerCase() == 'form')
      this.registerFormCallbacks();
    else
      this.registerCallback(this.element);
  },

  onElementEvent: function() {
    var value = this.getValue();
    if (this.lastValue != value) {
      this.callback(this.element, value);
      this.lastValue = value;
    }
  },

  registerFormCallbacks: function() {
    Form.getElements(this.element).each(this.registerCallback, this);
  },

  registerCallback: function(element) {
    if (element.type) {
      switch (element.type.toLowerCase()) {
        case 'checkbox':
        case 'radio':
          Event.observe(element, 'click', this.onElementEvent.bind(this));
          break;
        default:
          Event.observe(element, 'change', this.onElementEvent.bind(this));
          break;
      }
    }
  }
});

Form.Element.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.Element.getValue(this.element);
  }
});

Form.EventObserver = Class.create(Abstract.EventObserver, {
  getValue: function() {
    return Form.serialize(this.element);
  }
});
if (!window.Event) var Event = { };

Object.extend(Event, {
  KEY_BACKSPACE: 8,
  KEY_TAB:       9,
  KEY_RETURN:   13,
  KEY_ESC:      27,
  KEY_LEFT:     37,
  KEY_UP:       38,
  KEY_RIGHT:    39,
  KEY_DOWN:     40,
  KEY_DELETE:   46,
  KEY_HOME:     36,
  KEY_END:      35,
  KEY_PAGEUP:   33,
  KEY_PAGEDOWN: 34,
  KEY_INSERT:   45,

  cache: { },

  relatedTarget: function(event) {
    var element;
    switch(event.type) {
      case 'mouseover': element = event.fromElement; break;
      case 'mouseout':  element = event.toElement;   break;
      default: return null;
    }
    return Element.extend(element);
  }
});

Event.Methods = (function() {
  var isButton;

  if (Prototype.Browser.IE) {
    var buttonMap = { 0: 1, 1: 4, 2: 2 };
    isButton = function(event, code) {
      return event.button == buttonMap[code];
    };

  } else if (Prototype.Browser.WebKit) {
    isButton = function(event, code) {
      switch (code) {
        case 0: return event.which == 1 && !event.metaKey;
        case 1: return event.which == 1 && event.metaKey;
        default: return false;
      }
    };

  } else {
    isButton = function(event, code) {
      return event.which ? (event.which === code + 1) : (event.button === code);
    };
  }

  return {
    isLeftClick:   function(event) { return isButton(event, 0) },
    isMiddleClick: function(event) { return isButton(event, 1) },
    isRightClick:  function(event) { return isButton(event, 2) },

    element: function(event) {
      var node = Event.extend(event).target;
      return Element.extend(node.nodeType == Node.TEXT_NODE ? node.parentNode : node);
    },

    findElement: function(event, expression) {
      var element = Event.element(event);
      if (!expression) return element;
      var elements = [element].concat(element.ancestors());
      return Selector.findElement(elements, expression, 0);
    },

    pointer: function(event) {
      return {
        x: event.pageX || (event.clientX +
          (document.documentElement.scrollLeft || document.body.scrollLeft)),
        y: event.pageY || (event.clientY +
          (document.documentElement.scrollTop || document.body.scrollTop))
      };
    },

    pointerX: function(event) { return Event.pointer(event).x },
    pointerY: function(event) { return Event.pointer(event).y },

    stop: function(event) {
      Event.extend(event);
      event.preventDefault();
      event.stopPropagation();
      event.stopped = true;
    }
  };
})();

Event.extend = (function() {
  var methods = Object.keys(Event.Methods).inject({ }, function(m, name) {
    m[name] = Event.Methods[name].methodize();
    return m;
  });

  if (Prototype.Browser.IE) {
    Object.extend(methods, {
      stopPropagation: function() { this.cancelBubble = true },
      preventDefault:  function() { this.returnValue = false },
      inspect: function() { return "[object Event]" }
    });

    return function(event) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);
      Object.extend(event, {
        target: event.srcElement,
        relatedTarget: Event.relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });
      return Object.extend(event, methods);
    };

  } else {
    Event.prototype = Event.prototype || document.createEvent("HTMLEvents").__proto__;
    Object.extend(Event.prototype, methods);
    return Prototype.K;
  }
})();

Object.extend(Event, (function() {
  var cache = Event.cache;

  function getEventID(element) {
    if (element._prototypeEventID) return element._prototypeEventID[0];
    arguments.callee.id = arguments.callee.id || 1;
    return element._prototypeEventID = [++arguments.callee.id];
  }

  function getDOMEventName(eventName) {
    if (eventName && eventName.include(':')) return "dataavailable";
    return eventName;
  }

  function getCacheForID(id) {
    return cache[id] = cache[id] || { };
  }

  function getWrappersForEventName(id, eventName) {
    var c = getCacheForID(id);
    return c[eventName] = c[eventName] || [];
  }

  function createWrapper(element, eventName, handler) {
    var id = getEventID(element);
    var c = getWrappersForEventName(id, eventName);
    if (c.pluck("handler").include(handler)) return false;

    var wrapper = function(event) {
      if (!Event || !Event.extend ||
        (event.eventName && event.eventName != eventName))
          return false;

      Event.extend(event);
      handler.call(element, event);
    };

    wrapper.handler = handler;
    c.push(wrapper);
    return wrapper;
  }

  function findWrapper(id, eventName, handler) {
    var c = getWrappersForEventName(id, eventName);
    return c.find(function(wrapper) { return wrapper.handler == handler });
  }

  function destroyWrapper(id, eventName, handler) {
    var c = getCacheForID(id);
    if (!c[eventName]) return false;
    c[eventName] = c[eventName].without(findWrapper(id, eventName, handler));
  }

  function destroyCache() {
    for (var id in cache)
      for (var eventName in cache[id])
        cache[id][eventName] = null;
  }

  if (window.attachEvent) {
    window.attachEvent("onunload", destroyCache);
  }

  return {
    observe: function(element, eventName, handler) {
      element = $(element);
      var name = getDOMEventName(eventName);

      var wrapper = createWrapper(element, eventName, handler);
      if (!wrapper) return element;

      if (element.addEventListener) {
        element.addEventListener(name, wrapper, false);
      } else {
        element.attachEvent("on" + name, wrapper);
      }

      return element;
    },

    stopObserving: function(element, eventName, handler) {
      element = $(element);
      var id = getEventID(element), name = getDOMEventName(eventName);

      if (!handler && eventName) {
        getWrappersForEventName(id, eventName).each(function(wrapper) {
          element.stopObserving(eventName, wrapper.handler);
        });
        return element;

      } else if (!eventName) {
        Object.keys(getCacheForID(id)).each(function(eventName) {
          element.stopObserving(eventName);
        });
        return element;
      }

      var wrapper = findWrapper(id, eventName, handler);
      if (!wrapper) return element;

      if (element.removeEventListener) {
        element.removeEventListener(name, wrapper, false);
      } else {
        element.detachEvent("on" + name, wrapper);
      }

      destroyWrapper(id, eventName, handler);

      return element;
    },

    fire: function(element, eventName, memo) {
      element = $(element);
      if (element == document && document.createEvent && !element.dispatchEvent)
        element = document.documentElement;

      var event;
      if (document.createEvent) {
        event = document.createEvent("HTMLEvents");
        event.initEvent("dataavailable", true, true);
      } else {
        event = document.createEventObject();
        event.eventType = "ondataavailable";
      }

      event.eventName = eventName;
      event.memo = memo || { };

      if (document.createEvent) {
        element.dispatchEvent(event);
      } else {
        element.fireEvent(event.eventType, event);
      }

      return Event.extend(event);
    }
  };
})());

Object.extend(Event, Event.Methods);

Element.addMethods({
  fire:          Event.fire,
  observe:       Event.observe,
  stopObserving: Event.stopObserving
});

Object.extend(document, {
  fire:          Element.Methods.fire.methodize(),
  observe:       Element.Methods.observe.methodize(),
  stopObserving: Element.Methods.stopObserving.methodize(),
  loaded:        false
});

(function() {
  /* Support for the DOMContentLoaded event is based on work by Dan Webb,
     Matthias Miller, Dean Edwards and John Resig. */

  var timer;

  function fireContentLoadedEvent() {
    if (document.loaded) return;
    if (timer) window.clearInterval(timer);
    document.fire("dom:loaded");
    document.loaded = true;
  }

  if (document.addEventListener) {
    if (Prototype.Browser.WebKit) {
      timer = window.setInterval(function() {
        if (/loaded|complete/.test(document.readyState))
          fireContentLoadedEvent();
      }, 0);

      Event.observe(window, "load", fireContentLoadedEvent);

    } else {
      document.addEventListener("DOMContentLoaded",
        fireContentLoadedEvent, false);
    }

  } else {
    document.write("<script id=__onDOMContentLoaded defer src=//:><\/script>");
    $("__onDOMContentLoaded").onreadystatechange = function() {
      if (this.readyState == "complete") {
        this.onreadystatechange = null;
        fireContentLoadedEvent();
      }
    };
  }
})();
/*------------------------------- DEPRECATED -------------------------------*/

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

Element.Methods.childOf = Element.Methods.descendantOf;

var Insertion = {
  Before: function(element, content) {
    return Element.insert(element, {before:content});
  },

  Top: function(element, content) {
    return Element.insert(element, {top:content});
  },

  Bottom: function(element, content) {
    return Element.insert(element, {bottom:content});
  },

  After: function(element, content) {
    return Element.insert(element, {after:content});
  }
};

var $continue = new Error('"throw $continue" is deprecated, use "return" instead');

// This should be moved to script.aculo.us; notice the deprecated methods
// further below, that map to the newer Element methods.
var Position = {
  // set to true if needed, warning: firefox performance problems
  // NOT neeeded for page scrolling, only if draggable contained in
  // scrollable elements
  includeScrollOffsets: false,

  // must be called before calling withinIncludingScrolloffset, every time the
  // page is scrolled
  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  // caches x/y coordinate pair to use with overlap
  within: function(element, x, y) {
    if (this.includeScrollOffsets)
      return this.withinIncludingScrolloffsets(element, x, y);
    this.xcomp = x;
    this.ycomp = y;
    this.offset = Element.cumulativeOffset(element);

    return (y >= this.offset[1] &&
            y <  this.offset[1] + element.offsetHeight &&
            x >= this.offset[0] &&
            x <  this.offset[0] + element.offsetWidth);
  },

  withinIncludingScrolloffsets: function(element, x, y) {
    var offsetcache = Element.cumulativeScrollOffset(element);

    this.xcomp = x + offsetcache[0] - this.deltaX;
    this.ycomp = y + offsetcache[1] - this.deltaY;
    this.offset = Element.cumulativeOffset(element);

    return (this.ycomp >= this.offset[1] &&
            this.ycomp <  this.offset[1] + element.offsetHeight &&
            this.xcomp >= this.offset[0] &&
            this.xcomp <  this.offset[0] + element.offsetWidth);
  },

  // within must be called directly before
  overlap: function(mode, element) {
    if (!mode) return 0;
    if (mode == 'vertical')
      return ((this.offset[1] + element.offsetHeight) - this.ycomp) /
        element.offsetHeight;
    if (mode == 'horizontal')
      return ((this.offset[0] + element.offsetWidth) - this.xcomp) /
        element.offsetWidth;
  },

  // Deprecation layer -- use newer Element methods now (1.5.2).

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

  absolutize: function(element) {
    Position.prepare();
    return Element.absolutize(element);
  },

  relativize: function(element) {
    Position.prepare();
    return Element.relativize(element);
  },

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

  clone: function(source, target, options) {
    options = options || { };
    return Element.clonePosition(target, source, options);
  }
};

/*--------------------------------------------------------------------------*/

if (!document.getElementsByClassName) document.getElementsByClassName = function(instanceMethods){
  function iter(name) {
    return name.blank() ? null : "[contains(concat(' ', @class, ' '), ' " + name + " ')]";
  }

  instanceMethods.getElementsByClassName = Prototype.BrowserFeatures.XPath ?
  function(element, className) {
    className = className.toString().strip();
    var cond = /\s/.test(className) ? $w(className).map(iter).join('') : iter(className);
    return cond ? document._getElementsByXPath('.//*' + cond, element) : [];
  } : function(element, className) {
    className = className.toString().strip();
    var elements = [], classNames = (/\s/.test(className) ? $w(className) : null);
    if (!classNames && !className) return elements;

    var nodes = $(element).getElementsByTagName('*');
    className = ' ' + className + ' ';

    for (var i = 0, child, cn; child = nodes[i]; i++) {
      if (child.className && (cn = ' ' + child.className + ' ') && (cn.include(className) ||
          (classNames && classNames.all(function(name) {
            return !name.toString().blank() && cn.include(' ' + name + ' ');
          }))))
        elements.push(Element.extend(child));
    }
    return elements;
  };

  return function(className, parentElement) {
    return $(parentElement || document.body).getElementsByClassName(className);
  };
}(Element.Methods);

/*--------------------------------------------------------------------------*/

Element.ClassNames = Class.create();
Element.ClassNames.prototype = {
  initialize: function(element) {
    this.element = $(element);
  },

  _each: function(iterator) {
    this.element.className.split(/\s+/).select(function(name) {
      return name.length > 0;
    })._each(iterator);
  },

  set: function(className) {
    this.element.className = className;
  },

  add: function(classNameToAdd) {
    if (this.include(classNameToAdd)) return;
    this.set($A(this).concat(classNameToAdd).join(' '));
  },

  remove: function(classNameToRemove) {
    if (!this.include(classNameToRemove)) return;
    this.set($A(this).without(classNameToRemove).join(' '));
  },

  toString: function() {
    return $A(this).join(' ');
  }
};

Object.extend(Element.ClassNames.prototype, Enumerable);

/*--------------------------------------------------------------------------*/

Element.addMethods();


/**
* Function : dump()
* Arguments: The data - array,hash(associative array),object
*    The level - OPTIONAL
* Returns  : The textual representation of the array.
* This function was inspired by the print_r function of PHP.
* This will accept some data as the argument and return a
* text that will be a more readable version of the
* array/hash/object that is given.
*/
function dump(arr,level) {
	var dumped_text = "";
	if(!level) level = 0;
	
	//The padding given at the beginning of the line.
	var level_padding = "";
	for(var j=0;j<level+1;j++) level_padding += "    ";
	
	if(typeof(arr) == 'object') { //Array/Hashes/Objects 
		for(var item in arr) {
			var value = arr[item];
			
			if(typeof(value) == 'object') { //If it is an array,
				dumped_text += level_padding + "'" + item + "' ...\n";
				dumped_text += dump(value,level+1);
			} else {
				dumped_text += level_padding + "'" + item + "' => \"" + value + "\"\n";
			}
		}
	} else { //Stings/Chars/Numbers etc.
		dumped_text = "===>"+arr+"<===("+typeof(arr)+")";
	}
	return dumped_text;
}
/* scriptaculous/scriptaculous.js */
// script.aculo.us scriptaculous.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// 
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// For details, see the script.aculo.us web site: http://script.aculo.us/

var Scriptaculous = {
  Version: '1.8.1',
  require: function(libraryName) {
    // inserting via DOM fails in Safari 2.0, so brute force approach
    document.write('<script type="text/javascript" src="'+libraryName+'"><\/script>');
  },
  REQUIRED_PROTOTYPE: '1.6.0',
  load: function() {
    function convertVersionString(versionString){
      var r = versionString.split('.');
      return parseInt(r[0])*100000 + parseInt(r[1])*1000 + parseInt(r[2]);
    }
 
    if((typeof Prototype=='undefined') || 
       (typeof Element == 'undefined') || 
       (typeof Element.Methods=='undefined') ||
       (convertVersionString(Prototype.Version) < 
        convertVersionString(Scriptaculous.REQUIRED_PROTOTYPE)))
       throw("script.aculo.us requires the Prototype JavaScript framework >= " +
        Scriptaculous.REQUIRED_PROTOTYPE);
    
    $A(document.getElementsByTagName("script")).findAll( function(s) {
      return (s.src && s.src.match(/scriptaculous\.js(\?.*)?$/))
    }).each( function(s) {
      var path = s.src.replace(/scriptaculous\.js(\?.*)?$/,'');
      var includes = s.src.match(/\?.*load=([a-z,]*)/);
      (includes ? includes[1] : 'builder,effects,dragdrop,controls,slider,sound').split(',').each(
       function(include) { Scriptaculous.require(path+include+'.js') });
    });
  }
}

Scriptaculous.load();
/* scriptaculous/effects.js */
// script.aculo.us effects.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
// Contributors:
//  Justin Palmer (http://encytemedia.com/)
//  Mark Pilgrim (http://diveintomark.org/)
//  Martin Bialasinki
// 
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/ 

// converts rgb() and #xxx to #xxxxxx format,  
// returns self (or first argument) if not convertable  
String.prototype.parseColor = function() {  
  var color = '#';
  if (this.slice(0,4) == 'rgb(') {  
    var cols = this.slice(4,this.length-1).split(',');  
    var i=0; do { color += parseInt(cols[i]).toColorPart() } while (++i<3);  
  } else {  
    if (this.slice(0,1) == '#') {  
      if (this.length==4) for(var i=1;i<4;i++) color += (this.charAt(i) + this.charAt(i)).toLowerCase();  
      if (this.length==7) color = this.toLowerCase();  
    }  
  }  
  return (color.length==7 ? color : (arguments[0] || this));  
};

/*--------------------------------------------------------------------------*/

Element.collectTextNodes = function(element) {  
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue : 
      (node.hasChildNodes() ? Element.collectTextNodes(node) : ''));
  }).flatten().join('');
};

Element.collectTextNodesIgnoreClass = function(element, className) {  
  return $A($(element).childNodes).collect( function(node) {
    return (node.nodeType==3 ? node.nodeValue : 
      ((node.hasChildNodes() && !Element.hasClassName(node,className)) ? 
        Element.collectTextNodesIgnoreClass(node, className) : ''));
  }).flatten().join('');
};

Element.setContentZoom = function(element, percent) {
  element = $(element);  
  element.setStyle({fontSize: (percent/100) + 'em'});   
  if (Prototype.Browser.WebKit) window.scrollBy(0,0);
  return element;
};

Element.getInlineOpacity = function(element){
  return $(element).style.opacity || '';
};

Element.forceRerendering = function(element) {
  try {
    element = $(element);
    var n = document.createTextNode(' ');
    element.appendChild(n);
    element.removeChild(n);
  } catch(e) { }
};

/*--------------------------------------------------------------------------*/

var Effect = {
  _elementDoesNotExistError: {
    name: 'ElementDoesNotExistError',
    message: 'The specified DOM element does not exist, but is required for this effect to operate'
  },
  Transitions: {
    linear: Prototype.K,
    sinoidal: function(pos) {
      return (-Math.cos(pos*Math.PI)/2) + 0.5;
    },
    reverse: function(pos) {
      return 1-pos;
    },
    flicker: function(pos) {
      var pos = ((-Math.cos(pos*Math.PI)/4) + 0.75) + Math.random()/4;
      return pos > 1 ? 1 : pos;
    },
    wobble: function(pos) {
      return (-Math.cos(pos*Math.PI*(9*pos))/2) + 0.5;
    },
    pulse: function(pos, pulses) { 
      pulses = pulses || 5; 
      return (
        ((pos % (1/pulses)) * pulses).round() == 0 ? 
              ((pos * pulses * 2) - (pos * pulses * 2).floor()) : 
          1 - ((pos * pulses * 2) - (pos * pulses * 2).floor())
        );
    },
    spring: function(pos) { 
      return 1 - (Math.cos(pos * 4.5 * Math.PI) * Math.exp(-pos * 6)); 
    },
    none: function(pos) {
      return 0;
    },
    full: function(pos) {
      return 1;
    }
  },
  DefaultOptions: {
    duration:   1.0,   // seconds
    fps:        100,   // 100= assume 66fps max.
    sync:       false, // true for combining
    from:       0.0,
    to:         1.0,
    delay:      0.0,
    queue:      'parallel'
  },
  tagifyText: function(element) {
    var tagifyStyle = 'position:relative';
    if (Prototype.Browser.IE) tagifyStyle += ';zoom:1';
    
    element = $(element);
    $A(element.childNodes).each( function(child) {
      if (child.nodeType==3) {
        child.nodeValue.toArray().each( function(character) {
          element.insertBefore(
            new Element('span', {style: tagifyStyle}).update(
              character == ' ' ? String.fromCharCode(160) : character), 
              child);
        });
        Element.remove(child);
      }
    });
  },
  multiple: function(element, effect) {
    var elements;
    if (((typeof element == 'object') || 
        Object.isFunction(element)) && 
       (element.length))
      elements = element;
    else
      elements = $(element).childNodes;
      
    var options = Object.extend({
      speed: 0.1,
      delay: 0.0
    }, arguments[2] || { });
    var masterDelay = options.delay;

    $A(elements).each( function(element, index) {
      new effect(element, Object.extend(options, { delay: index * options.speed + masterDelay }));
    });
  },
  PAIRS: {
    'slide':  ['SlideDown','SlideUp'],
    'blind':  ['BlindDown','BlindUp'],
    'appear': ['Appear','Fade']
  },
  toggle: function(element, effect) {
    element = $(element);
    effect = (effect || 'appear').toLowerCase();
    var options = Object.extend({
      queue: { position:'end', scope:(element.id || 'global'), limit: 1 }
    }, arguments[2] || { });
    Effect[element.visible() ? 
      Effect.PAIRS[effect][1] : Effect.PAIRS[effect][0]](element, options);
  }
};

Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;

/* ------------- core effects ------------- */

Effect.ScopedQueue = Class.create(Enumerable, {
  initialize: function() {
    this.effects  = [];
    this.interval = null;    
  },
  _each: function(iterator) {
    this.effects._each(iterator);
  },
  add: function(effect) {
    var timestamp = new Date().getTime();
    
    var position = Object.isString(effect.options.queue) ? 
      effect.options.queue : effect.options.queue.position;
    
    switch(position) {
      case 'front':
        // move unstarted effects after this effect  
        this.effects.findAll(function(e){ return e.state=='idle' }).each( function(e) {
            e.startOn  += effect.finishOn;
            e.finishOn += effect.finishOn;
          });
        break;
      case 'with-last':
        timestamp = this.effects.pluck('startOn').max() || timestamp;
        break;
      case 'end':
        // start effect after last queued effect has finished
        timestamp = this.effects.pluck('finishOn').max() || timestamp;
        break;
    }
    
    effect.startOn  += timestamp;
    effect.finishOn += timestamp;

    if (!effect.options.queue.limit || (this.effects.length < effect.options.queue.limit))
      this.effects.push(effect);
    
    if (!this.interval)
      this.interval = setInterval(this.loop.bind(this), 15);
  },
  remove: function(effect) {
    this.effects = this.effects.reject(function(e) { return e==effect });
    if (this.effects.length == 0) {
      clearInterval(this.interval);
      this.interval = null;
    }
  },
  loop: function() {
    var timePos = new Date().getTime();
    for(var i=0, len=this.effects.length;i<len;i++) 
      this.effects[i] && this.effects[i].loop(timePos);
  }
});

Effect.Queues = {
  instances: $H(),
  get: function(queueName) {
    if (!Object.isString(queueName)) return queueName;
    
    return this.instances.get(queueName) ||
      this.instances.set(queueName, new Effect.ScopedQueue());
  }
};
Effect.Queue = Effect.Queues.get('global');

Effect.Base = Class.create({
  position: null,
  start: function(options) {
    function codeForEvent(options,eventName){
      return (
        (options[eventName+'Internal'] ? 'this.options.'+eventName+'Internal(this);' : '') +
        (options[eventName] ? 'this.options.'+eventName+'(this);' : '')
      );
    }
    if (options && options.transition === false) options.transition = Effect.Transitions.linear;
    this.options      = Object.extend(Object.extend({ },Effect.DefaultOptions), options || { });
    this.currentFrame = 0;
    this.state        = 'idle';
    this.startOn      = this.options.delay*1000;
    this.finishOn     = this.startOn+(this.options.duration*1000);
    this.fromToDelta  = this.options.to-this.options.from;
    this.totalTime    = this.finishOn-this.startOn;
    this.totalFrames  = this.options.fps*this.options.duration;
    
    eval('this.render = function(pos){ '+
      'if (this.state=="idle"){this.state="running";'+
      codeForEvent(this.options,'beforeSetup')+
      (this.setup ? 'this.setup();':'')+ 
      codeForEvent(this.options,'afterSetup')+
      '};if (this.state=="running"){'+
      'pos=this.options.transition(pos)*'+this.fromToDelta+'+'+this.options.from+';'+
      'this.position=pos;'+
      codeForEvent(this.options,'beforeUpdate')+
      (this.update ? 'this.update(pos);':'')+
      codeForEvent(this.options,'afterUpdate')+
      '}}');
    
    this.event('beforeStart');
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ? 
        'global' : this.options.queue.scope).add(this);
  },
  loop: function(timePos) {
    if (timePos >= this.startOn) {
      if (timePos >= this.finishOn) {
        this.render(1.0);
        this.cancel();
        this.event('beforeFinish');
        if (this.finish) this.finish(); 
        this.event('afterFinish');
        return;  
      }
      var pos   = (timePos - this.startOn) / this.totalTime,
          frame = (pos * this.totalFrames).round();
      if (frame > this.currentFrame) {
        this.render(pos);
        this.currentFrame = frame;
      }
    }
  },
  cancel: function() {
    if (!this.options.sync)
      Effect.Queues.get(Object.isString(this.options.queue) ? 
        'global' : this.options.queue.scope).remove(this);
    this.state = 'finished';
  },
  event: function(eventName) {
    if (this.options[eventName + 'Internal']) this.options[eventName + 'Internal'](this);
    if (this.options[eventName]) this.options[eventName](this);
  },
  inspect: function() {
    var data = $H();
    for(property in this)
      if (!Object.isFunction(this[property])) data.set(property, this[property]);
    return '#<Effect:' + data.inspect() + ',options:' + $H(this.options).inspect() + '>';
  }
});

Effect.Parallel = Class.create(Effect.Base, {
  initialize: function(effects) {
    this.effects = effects || [];
    this.start(arguments[1]);
  },
  update: function(position) {
    this.effects.invoke('render', position);
  },
  finish: function(position) {
    this.effects.each( function(effect) {
      effect.render(1.0);
      effect.cancel();
      effect.event('beforeFinish');
      if (effect.finish) effect.finish(position);
      effect.event('afterFinish');
    });
  }
});

Effect.Tween = Class.create(Effect.Base, {
  initialize: function(object, from, to) {
    object = Object.isString(object) ? $(object) : object;
    var args = $A(arguments), method = args.last(), 
      options = args.length == 5 ? args[3] : null;
    this.method = Object.isFunction(method) ? method.bind(object) :
      Object.isFunction(object[method]) ? object[method].bind(object) : 
      function(value) { object[method] = value };
    this.start(Object.extend({ from: from, to: to }, options || { }));
  },
  update: function(position) {
    this.method(position);
  }
});

Effect.Event = Class.create(Effect.Base, {
  initialize: function() {
    this.start(Object.extend({ duration: 0 }, arguments[0] || { }));
  },
  update: Prototype.emptyFunction
});

Effect.Opacity = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    // make this work on IE on elements without 'layout'
    if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
      this.element.setStyle({zoom: 1});
    var options = Object.extend({
      from: this.element.getOpacity() || 0.0,
      to:   1.0
    }, arguments[1] || { });
    this.start(options);
  },
  update: function(position) {
    this.element.setOpacity(position);
  }
});

Effect.Move = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      x:    0,
      y:    0,
      mode: 'relative'
    }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    this.element.makePositioned();
    this.originalLeft = parseFloat(this.element.getStyle('left') || '0');
    this.originalTop  = parseFloat(this.element.getStyle('top')  || '0');
    if (this.options.mode == 'absolute') {
      this.options.x = this.options.x - this.originalLeft;
      this.options.y = this.options.y - this.originalTop;
    }
  },
  update: function(position) {
    this.element.setStyle({
      left: (this.options.x  * position + this.originalLeft).round() + 'px',
      top:  (this.options.y  * position + this.originalTop).round()  + 'px'
    });
  }
});

// for backwards compatibility
Effect.MoveBy = function(element, toTop, toLeft) {
  return new Effect.Move(element, 
    Object.extend({ x: toLeft, y: toTop }, arguments[3] || { }));
};

Effect.Scale = Class.create(Effect.Base, {
  initialize: function(element, percent) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      scaleX: true,
      scaleY: true,
      scaleContent: true,
      scaleFromCenter: false,
      scaleMode: 'box',        // 'box' or 'contents' or { } with provided values
      scaleFrom: 100.0,
      scaleTo:   percent
    }, arguments[2] || { });
    this.start(options);
  },
  setup: function() {
    this.restoreAfterFinish = this.options.restoreAfterFinish || false;
    this.elementPositioning = this.element.getStyle('position');
    
    this.originalStyle = { };
    ['top','left','width','height','fontSize'].each( function(k) {
      this.originalStyle[k] = this.element.style[k];
    }.bind(this));
      
    this.originalTop  = this.element.offsetTop;
    this.originalLeft = this.element.offsetLeft;
    
    var fontSize = this.element.getStyle('font-size') || '100%';
    ['em','px','%','pt'].each( function(fontSizeType) {
      if (fontSize.indexOf(fontSizeType)>0) {
        this.fontSize     = parseFloat(fontSize);
        this.fontSizeType = fontSizeType;
      }
    }.bind(this));
    
    this.factor = (this.options.scaleTo - this.options.scaleFrom)/100;
    
    this.dims = null;
    if (this.options.scaleMode=='box')
      this.dims = [this.element.offsetHeight, this.element.offsetWidth];
    if (/^content/.test(this.options.scaleMode))
      this.dims = [this.element.scrollHeight, this.element.scrollWidth];
    if (!this.dims)
      this.dims = [this.options.scaleMode.originalHeight,
                   this.options.scaleMode.originalWidth];
  },
  update: function(position) {
    var currentScale = (this.options.scaleFrom/100.0) + (this.factor * position);
    if (this.options.scaleContent && this.fontSize)
      this.element.setStyle({fontSize: this.fontSize * currentScale + this.fontSizeType });
    this.setDimensions(this.dims[0] * currentScale, this.dims[1] * currentScale);
  },
  finish: function(position) {
    if (this.restoreAfterFinish) this.element.setStyle(this.originalStyle);
  },
  setDimensions: function(height, width) {
    var d = { };
    if (this.options.scaleX) d.width = width.round() + 'px';
    if (this.options.scaleY) d.height = height.round() + 'px';
    if (this.options.scaleFromCenter) {
      var topd  = (height - this.dims[0])/2;
      var leftd = (width  - this.dims[1])/2;
      if (this.elementPositioning == 'absolute') {
        if (this.options.scaleY) d.top = this.originalTop-topd + 'px';
        if (this.options.scaleX) d.left = this.originalLeft-leftd + 'px';
      } else {
        if (this.options.scaleY) d.top = -topd + 'px';
        if (this.options.scaleX) d.left = -leftd + 'px';
      }
    }
    this.element.setStyle(d);
  }
});

Effect.Highlight = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({ startcolor: '#ffff99' }, arguments[1] || { });
    this.start(options);
  },
  setup: function() {
    // Prevent executing on elements not in the layout flow
    if (this.element.getStyle('display')=='none') { this.cancel(); return; }
    // Disable background image during the effect
    this.oldStyle = { };
    if (!this.options.keepBackgroundImage) {
      this.oldStyle.backgroundImage = this.element.getStyle('background-image');
      this.element.setStyle({backgroundImage: 'none'});
    }
    if (!this.options.endcolor)
      this.options.endcolor = this.element.getStyle('background-color').parseColor('#ffffff');
    if (!this.options.restorecolor)
      this.options.restorecolor = this.element.getStyle('background-color');
    // init color calculations
    this._base  = $R(0,2).map(function(i){ return parseInt(this.options.startcolor.slice(i*2+1,i*2+3),16) }.bind(this));
    this._delta = $R(0,2).map(function(i){ return parseInt(this.options.endcolor.slice(i*2+1,i*2+3),16)-this._base[i] }.bind(this));
  },
  update: function(position) {
    this.element.setStyle({backgroundColor: $R(0,2).inject('#',function(m,v,i){
      return m+((this._base[i]+(this._delta[i]*position)).round().toColorPart()); }.bind(this)) });
  },
  finish: function() {
    this.element.setStyle(Object.extend(this.oldStyle, {
      backgroundColor: this.options.restorecolor
    }));
  }
});

Effect.ScrollTo = function(element) {
  var options = arguments[1] || { },
    scrollOffsets = document.viewport.getScrollOffsets(),
    elementOffsets = $(element).cumulativeOffset(),
    max = (window.height || document.body.scrollHeight) - document.viewport.getHeight();  

  if (options.offset) elementOffsets[1] += options.offset;

  return new Effect.Tween(null,
    scrollOffsets.top,
    elementOffsets[1] > max ? max : elementOffsets[1],
    options,
    function(p){ scrollTo(scrollOffsets.left, p.round()) }
  );
};

/* ------------- combination effects ------------- */

Effect.Fade = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  var options = Object.extend({
    from: element.getOpacity() || 1.0,
    to:   0.0,
    afterFinishInternal: function(effect) { 
      if (effect.options.to!=0) return;
      effect.element.hide().setStyle({opacity: oldOpacity}); 
    }
  }, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Appear = function(element) {
  element = $(element);
  var options = Object.extend({
  from: (element.getStyle('display') == 'none' ? 0.0 : element.getOpacity() || 0.0),
  to:   1.0,
  // force Safari to render floated elements properly
  afterFinishInternal: function(effect) {
    effect.element.forceRerendering();
  },
  beforeSetup: function(effect) {
    effect.element.setOpacity(effect.options.from).show(); 
  }}, arguments[1] || { });
  return new Effect.Opacity(element,options);
};

Effect.Puff = function(element) {
  element = $(element);
  var oldStyle = { 
    opacity: element.getInlineOpacity(), 
    position: element.getStyle('position'),
    top:  element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height
  };
  return new Effect.Parallel(
   [ new Effect.Scale(element, 200, 
      { sync: true, scaleFromCenter: true, scaleContent: true, restoreAfterFinish: true }), 
     new Effect.Opacity(element, { sync: true, to: 0.0 } ) ], 
     Object.extend({ duration: 1.0, 
      beforeSetupInternal: function(effect) {
        Position.absolutize(effect.effects[0].element)
      },
      afterFinishInternal: function(effect) {
         effect.effects[0].element.hide().setStyle(oldStyle); }
     }, arguments[1] || { })
   );
};

Effect.BlindUp = function(element) {
  element = $(element);
  element.makeClipping();
  return new Effect.Scale(element, 0,
    Object.extend({ scaleContent: false, 
      scaleX: false, 
      restoreAfterFinish: true,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping();
      } 
    }, arguments[1] || { })
  );
};

Effect.BlindDown = function(element) {
  element = $(element);
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({ 
    scaleContent: false, 
    scaleX: false,
    scaleFrom: 0,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
    },  
    afterFinishInternal: function(effect) {
      effect.element.undoClipping();
    }
  }, arguments[1] || { }));
};

Effect.SwitchOff = function(element) {
  element = $(element);
  var oldOpacity = element.getInlineOpacity();
  return new Effect.Appear(element, Object.extend({
    duration: 0.4,
    from: 0,
    transition: Effect.Transitions.flicker,
    afterFinishInternal: function(effect) {
      new Effect.Scale(effect.element, 1, { 
        duration: 0.3, scaleFromCenter: true,
        scaleX: false, scaleContent: false, restoreAfterFinish: true,
        beforeSetup: function(effect) { 
          effect.element.makePositioned().makeClipping();
        },
        afterFinishInternal: function(effect) {
          effect.element.hide().undoClipping().undoPositioned().setStyle({opacity: oldOpacity});
        }
      })
    }
  }, arguments[1] || { }));
};

Effect.DropOut = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left'),
    opacity: element.getInlineOpacity() };
  return new Effect.Parallel(
    [ new Effect.Move(element, {x: 0, y: 100, sync: true }), 
      new Effect.Opacity(element, { sync: true, to: 0.0 }) ],
    Object.extend(
      { duration: 0.5,
        beforeSetup: function(effect) {
          effect.effects[0].element.makePositioned(); 
        },
        afterFinishInternal: function(effect) {
          effect.effects[0].element.hide().undoPositioned().setStyle(oldStyle);
        } 
      }, arguments[1] || { }));
};

Effect.Shake = function(element) {
  element = $(element);
  var options = Object.extend({
    distance: 20,
    duration: 0.5
  }, arguments[1] || {});
  var distance = parseFloat(options.distance);
  var split = parseFloat(options.duration) / 10.0;
  var oldStyle = {
    top: element.getStyle('top'),
    left: element.getStyle('left') };
    return new Effect.Move(element,
      { x:  distance, y: 0, duration: split, afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x:  distance*2, y: 0, duration: split*2,  afterFinishInternal: function(effect) {
    new Effect.Move(effect.element,
      { x: -distance, y: 0, duration: split, afterFinishInternal: function(effect) {
        effect.element.undoPositioned().setStyle(oldStyle);
  }}) }}) }}) }}) }}) }});
};

Effect.SlideDown = function(element) {
  element = $(element).cleanWhitespace();
  // SlideDown need to have the content of the element wrapped in a container element with fixed height!
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, 100, Object.extend({ 
    scaleContent: false, 
    scaleX: false, 
    scaleFrom: window.opera ? 0 : 1,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().setStyle({height: '0px'}).show(); 
    },
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' }); 
    },
    afterFinishInternal: function(effect) {
      effect.element.undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom}); }
    }, arguments[1] || { })
  );
};

Effect.SlideUp = function(element) {
  element = $(element).cleanWhitespace();
  var oldInnerBottom = element.down().getStyle('bottom');
  var elementDimensions = element.getDimensions();
  return new Effect.Scale(element, window.opera ? 0 : 1,
   Object.extend({ scaleContent: false, 
    scaleX: false, 
    scaleMode: 'box',
    scaleFrom: 100,
    scaleMode: {originalHeight: elementDimensions.height, originalWidth: elementDimensions.width},
    restoreAfterFinish: true,
    afterSetup: function(effect) {
      effect.element.makePositioned();
      effect.element.down().makePositioned();
      if (window.opera) effect.element.setStyle({top: ''});
      effect.element.makeClipping().show();
    },  
    afterUpdateInternal: function(effect) {
      effect.element.down().setStyle({bottom:
        (effect.dims[0] - effect.element.clientHeight) + 'px' });
    },
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping().undoPositioned();
      effect.element.down().undoPositioned().setStyle({bottom: oldInnerBottom});
    }
   }, arguments[1] || { })
  );
};

// Bug in opera makes the TD containing this element expand for a instance after finish 
Effect.Squish = function(element) {
  return new Effect.Scale(element, window.opera ? 1 : 0, { 
    restoreAfterFinish: true,
    beforeSetup: function(effect) {
      effect.element.makeClipping(); 
    },  
    afterFinishInternal: function(effect) {
      effect.element.hide().undoClipping(); 
    }
  });
};

Effect.Grow = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.full
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();    
  var initialMoveX, initialMoveY;
  var moveX, moveY;
  
  switch (options.direction) {
    case 'top-left':
      initialMoveX = initialMoveY = moveX = moveY = 0; 
      break;
    case 'top-right':
      initialMoveX = dims.width;
      initialMoveY = moveY = 0;
      moveX = -dims.width;
      break;
    case 'bottom-left':
      initialMoveX = moveX = 0;
      initialMoveY = dims.height;
      moveY = -dims.height;
      break;
    case 'bottom-right':
      initialMoveX = dims.width;
      initialMoveY = dims.height;
      moveX = -dims.width;
      moveY = -dims.height;
      break;
    case 'center':
      initialMoveX = dims.width / 2;
      initialMoveY = dims.height / 2;
      moveX = -dims.width / 2;
      moveY = -dims.height / 2;
      break;
  }
  
  return new Effect.Move(element, {
    x: initialMoveX,
    y: initialMoveY,
    duration: 0.01, 
    beforeSetup: function(effect) {
      effect.element.hide().makeClipping().makePositioned();
    },
    afterFinishInternal: function(effect) {
      new Effect.Parallel(
        [ new Effect.Opacity(effect.element, { sync: true, to: 1.0, from: 0.0, transition: options.opacityTransition }),
          new Effect.Move(effect.element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition }),
          new Effect.Scale(effect.element, 100, {
            scaleMode: { originalHeight: dims.height, originalWidth: dims.width }, 
            sync: true, scaleFrom: window.opera ? 1 : 0, transition: options.scaleTransition, restoreAfterFinish: true})
        ], Object.extend({
             beforeSetup: function(effect) {
               effect.effects[0].element.setStyle({height: '0px'}).show(); 
             },
             afterFinishInternal: function(effect) {
               effect.effects[0].element.undoClipping().undoPositioned().setStyle(oldStyle); 
             }
           }, options)
      )
    }
  });
};

Effect.Shrink = function(element) {
  element = $(element);
  var options = Object.extend({
    direction: 'center',
    moveTransition: Effect.Transitions.sinoidal,
    scaleTransition: Effect.Transitions.sinoidal,
    opacityTransition: Effect.Transitions.none
  }, arguments[1] || { });
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    height: element.style.height,
    width: element.style.width,
    opacity: element.getInlineOpacity() };

  var dims = element.getDimensions();
  var moveX, moveY;
  
  switch (options.direction) {
    case 'top-left':
      moveX = moveY = 0;
      break;
    case 'top-right':
      moveX = dims.width;
      moveY = 0;
      break;
    case 'bottom-left':
      moveX = 0;
      moveY = dims.height;
      break;
    case 'bottom-right':
      moveX = dims.width;
      moveY = dims.height;
      break;
    case 'center':  
      moveX = dims.width / 2;
      moveY = dims.height / 2;
      break;
  }
  
  return new Effect.Parallel(
    [ new Effect.Opacity(element, { sync: true, to: 0.0, from: 1.0, transition: options.opacityTransition }),
      new Effect.Scale(element, window.opera ? 1 : 0, { sync: true, transition: options.scaleTransition, restoreAfterFinish: true}),
      new Effect.Move(element, { x: moveX, y: moveY, sync: true, transition: options.moveTransition })
    ], Object.extend({            
         beforeStartInternal: function(effect) {
           effect.effects[0].element.makePositioned().makeClipping(); 
         },
         afterFinishInternal: function(effect) {
           effect.effects[0].element.hide().undoClipping().undoPositioned().setStyle(oldStyle); }
       }, options)
  );
};

Effect.Pulsate = function(element) {
  element = $(element);
  var options    = arguments[1] || { };
  var oldOpacity = element.getInlineOpacity();
  var transition = options.transition || Effect.Transitions.sinoidal;
  var reverser   = function(pos){ return transition(1-Effect.Transitions.pulse(pos, options.pulses)) };
  reverser.bind(transition);
  return new Effect.Opacity(element, 
    Object.extend(Object.extend({  duration: 2.0, from: 0,
      afterFinishInternal: function(effect) { effect.element.setStyle({opacity: oldOpacity}); }
    }, options), {transition: reverser}));
};

Effect.Fold = function(element) {
  element = $(element);
  var oldStyle = {
    top: element.style.top,
    left: element.style.left,
    width: element.style.width,
    height: element.style.height };
  element.makeClipping();
  return new Effect.Scale(element, 5, Object.extend({   
    scaleContent: false,
    scaleX: false,
    afterFinishInternal: function(effect) {
    new Effect.Scale(element, 1, { 
      scaleContent: false, 
      scaleY: false,
      afterFinishInternal: function(effect) {
        effect.element.hide().undoClipping().setStyle(oldStyle);
      } });
  }}, arguments[1] || { }));
};

Effect.Morph = Class.create(Effect.Base, {
  initialize: function(element) {
    this.element = $(element);
    if (!this.element) throw(Effect._elementDoesNotExistError);
    var options = Object.extend({
      style: { }
    }, arguments[1] || { });
    
    if (!Object.isString(options.style)) this.style = $H(options.style);
    else {
      if (options.style.include(':'))
        this.style = options.style.parseStyle();
      else {
        this.element.addClassName(options.style);
        this.style = $H(this.element.getStyles());
        this.element.removeClassName(options.style);
        var css = this.element.getStyles();
        this.style = this.style.reject(function(style) {
          return style.value == css[style.key];
        });
        options.afterFinishInternal = function(effect) {
          effect.element.addClassName(effect.options.style);
          effect.transforms.each(function(transform) {
            effect.element.style[transform.style] = '';
          });
        }
      }
    }
    this.start(options);
  },
  
  setup: function(){
    function parseColor(color){
      if (!color || ['rgba(0, 0, 0, 0)','transparent'].include(color)) color = '#ffffff';
      color = color.parseColor();
      return $R(0,2).map(function(i){
        return parseInt( color.slice(i*2+1,i*2+3), 16 ) 
      });
    }
    this.transforms = this.style.map(function(pair){
      var property = pair[0], value = pair[1], unit = null;

      if (value.parseColor('#zzzzzz') != '#zzzzzz') {
        value = value.parseColor();
        unit  = 'color';
      } else if (property == 'opacity') {
        value = parseFloat(value);
        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout))
          this.element.setStyle({zoom: 1});
      } else if (Element.CSS_LENGTH.test(value)) {
          var components = value.match(/^([\+\-]?[0-9\.]+)(.*)$/);
          value = parseFloat(components[1]);
          unit = (components.length == 3) ? components[2] : null;
      }

      var originalValue = this.element.getStyle(property);
      return { 
        style: property.camelize(), 
        originalValue: unit=='color' ? parseColor(originalValue) : parseFloat(originalValue || 0), 
        targetValue: unit=='color' ? parseColor(value) : value,
        unit: unit
      };
    }.bind(this)).reject(function(transform){
      return (
        (transform.originalValue == transform.targetValue) ||
        (
          transform.unit != 'color' &&
          (isNaN(transform.originalValue) || isNaN(transform.targetValue))
        )
      )
    });
  },
  update: function(position) {
    var style = { }, transform, i = this.transforms.length;
    while(i--)
      style[(transform = this.transforms[i]).style] = 
        transform.unit=='color' ? '#'+
          (Math.round(transform.originalValue[0]+
            (transform.targetValue[0]-transform.originalValue[0])*position)).toColorPart() +
          (Math.round(transform.originalValue[1]+
            (transform.targetValue[1]-transform.originalValue[1])*position)).toColorPart() +
          (Math.round(transform.originalValue[2]+
            (transform.targetValue[2]-transform.originalValue[2])*position)).toColorPart() :
        (transform.originalValue +
          (transform.targetValue - transform.originalValue) * position).toFixed(3) + 
            (transform.unit === null ? '' : transform.unit);
    this.element.setStyle(style, true);
  }
});

Effect.Transform = Class.create({
  initialize: function(tracks){
    this.tracks  = [];
    this.options = arguments[1] || { };
    this.addTracks(tracks);
  },
  addTracks: function(tracks){
    tracks.each(function(track){
      track = $H(track);
      var data = track.values().first();
      this.tracks.push($H({
        ids:     track.keys().first(),
        effect:  Effect.Morph,
        options: { style: data }
      }));
    }.bind(this));
    return this;
  },
  play: function(){
    return new Effect.Parallel(
      this.tracks.map(function(track){
        var ids = track.get('ids'), effect = track.get('effect'), options = track.get('options');
        var elements = [$(ids) || $$(ids)].flatten();
        return elements.map(function(e){ return new effect(e, Object.extend({ sync:true }, options)) });
      }).flatten(),
      this.options
    );
  }
});

Element.CSS_PROPERTIES = $w(
  'backgroundColor backgroundPosition borderBottomColor borderBottomStyle ' + 
  'borderBottomWidth borderLeftColor borderLeftStyle borderLeftWidth ' +
  'borderRightColor borderRightStyle borderRightWidth borderSpacing ' +
  'borderTopColor borderTopStyle borderTopWidth bottom clip color ' +
  'fontSize fontWeight height left letterSpacing lineHeight ' +
  'marginBottom marginLeft marginRight marginTop markerOffset maxHeight '+
  'maxWidth minHeight minWidth opacity outlineColor outlineOffset ' +
  'outlineWidth paddingBottom paddingLeft paddingRight paddingTop ' +
  'right textIndent top width wordSpacing zIndex');
  
Element.CSS_LENGTH = /^(([\+\-]?[0-9\.]+)(em|ex|px|in|cm|mm|pt|pc|\%))|0$/;

String.__parseStyleElement = document.createElement('div');
String.prototype.parseStyle = function(){
  var style, styleRules = $H();
  if (Prototype.Browser.WebKit)
    style = new Element('div',{style:this}).style;
  else {
    String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
    style = String.__parseStyleElement.childNodes[0].style;
  }
  
  Element.CSS_PROPERTIES.each(function(property){
    if (style[property]) styleRules.set(property, style[property]); 
  });
  
  if (Prototype.Browser.IE && this.include('opacity'))
    styleRules.set('opacity', this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1]);

  return styleRules;
};

if (document.defaultView && document.defaultView.getComputedStyle) {
  Element.getStyles = function(element) {
    var css = document.defaultView.getComputedStyle($(element), null);
    return Element.CSS_PROPERTIES.inject({ }, function(styles, property) {
      styles[property] = css[property];
      return styles;
    });
  };
} else {
  Element.getStyles = function(element) {
    element = $(element);
    var css = element.currentStyle, styles;
    styles = Element.CSS_PROPERTIES.inject({ }, function(results, property) {
      results[property] = css[property];
      return results;
    });
    if (!styles.opacity) styles.opacity = element.getOpacity();
    return styles;
  };
};

Effect.Methods = {
  morph: function(element, style) {
    element = $(element);
    new Effect.Morph(element, Object.extend({ style: style }, arguments[2] || { }));
    return element;
  },
  visualEffect: function(element, effect, options) {
    element = $(element)
    var s = effect.dasherize().camelize(), klass = s.charAt(0).toUpperCase() + s.substring(1);
    new Effect[klass](element, options);
    return element;
  },
  highlight: function(element, options) {
    element = $(element);
    new Effect.Highlight(element, options);
    return element;
  }
};

$w('fade appear grow shrink fold blindUp blindDown slideUp slideDown '+
  'pulsate shake puff squish switchOff dropOut').each(
  function(effect) { 
    Effect.Methods[effect] = function(element, options){
      element = $(element);
      Effect[effect.charAt(0).toUpperCase() + effect.substring(1)](element, options);
      return element;
    }
  }
);

$w('getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles').each( 
  function(f) { Effect.Methods[f] = Element[f]; }
);

Element.addMethods(Effect.Methods);

/* scriptaculous/controls.js */
// script.aculo.us controls.js v1.8.1, Thu Jan 03 22:07:12 -0500 2008

// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
//           (c) 2005-2007 Ivan Krstic (http://blogs.law.harvard.edu/ivan)
//           (c) 2005-2007 Jon Tirsen (http://www.tirsen.com)
// Contributors:
//  Richard Livsey
//  Rahul Bhargava
//  Rob Wills
// 
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/

// Autocompleter.Base handles all the autocompletion functionality 
// that's independent of the data source for autocompletion. This
// includes drawing the autocompletion menu, observing keyboard
// and mouse events, and similar.
//
// Specific autocompleters need to provide, at the very least, 
// a getUpdatedChoices function that will be invoked every time
// the text inside the monitored textbox changes. This method 
// should get the text for which to provide autocompletion by
// invoking this.getToken(), NOT by directly accessing
// this.element.value. This is to allow incremental tokenized
// autocompletion. Specific auto-completion logic (AJAX, etc)
// belongs in getUpdatedChoices.
//
// Tokenized incremental autocompletion is enabled automatically
// when an autocompleter is instantiated with the 'tokens' option
// in the options parameter, e.g.:
// new Ajax.Autocompleter('id','upd', '/url/', { tokens: ',' });
// will incrementally autocomplete with a comma as the token.
// Additionally, ',' in the above example can be replaced with
// a token array, e.g. { tokens: [',', '\n'] } which
// enables autocompletion on multiple tokens. This is most 
// useful when one of the tokens is \n (a newline), as it 
// allows smart autocompletion after linebreaks.

if(typeof Effect == 'undefined')
  throw("controls.js requires including script.aculo.us' effects.js library");

var Autocompleter = { }
Autocompleter.Base = Class.create({
  baseInitialize: function(element, update, options) {
    element          = $(element)
    this.element     = element; 
    this.update      = $(update);  
    this.hasFocus    = false; 
    this.changed     = false; 
    this.active      = false; 
    this.index       = 0;     
    this.entryCount  = 0;
    this.oldElementValue = this.element.value;

    if(this.setOptions)
      this.setOptions(options);
    else
      this.options = options || { };

    this.options.paramName    = this.options.paramName || this.element.name;
    this.options.tokens       = this.options.tokens || [];
    this.options.frequency    = this.options.frequency || 0.4;
    this.options.minChars     = this.options.minChars || 1;
    this.options.onShow       = this.options.onShow || 
      function(element, update){ 
        if(!update.style.position || update.style.position=='absolute') {
          update.style.position = 'absolute';
          Position.clone(element, update, {
            setHeight: false, 
            offsetTop: element.offsetHeight
          });
        }
        Effect.Appear(update,{duration:0.15});
      };
    this.options.onHide = this.options.onHide || 
      function(element, update){ new Effect.Fade(update,{duration:0.15}) };

    if(typeof(this.options.tokens) == 'string') 
      this.options.tokens = new Array(this.options.tokens);
    // Force carriage returns as token delimiters anyway
    if (!this.options.tokens.include('\n'))
      this.options.tokens.push('\n');

    this.observer = null;
    
    this.element.setAttribute('autocomplete','off');

    Element.hide(this.update);

    Event.observe(this.element, 'blur', this.onBlur.bindAsEventListener(this));
    Event.observe(this.element, 'keydown', this.onKeyPress.bindAsEventListener(this));
  },

  show: function() {
    if(Element.getStyle(this.update, 'display')=='none') this.options.onShow(this.element, this.update);
    if(!this.iefix && 
      (Prototype.Browser.IE) &&
      (Element.getStyle(this.update, 'position')=='absolute')) {
      new Insertion.After(this.update, 
       '<iframe id="' + this.update.id + '_iefix" '+
       'style="display:none;position:absolute;filter:progid:DXImageTransform.Microsoft.Alpha(opacity=0);" ' +
       'src="javascript:false;" frameborder="0" scrolling="no"></iframe>');
      this.iefix = $(this.update.id+'_iefix');
    }
    if(this.iefix) setTimeout(this.fixIEOverlapping.bind(this), 50);
  },
  
  fixIEOverlapping: function() {
    Position.clone(this.update, this.iefix, {setTop:(!this.update.style.height)});
    this.iefix.style.zIndex = 1;
    this.update.style.zIndex = 2;
    Element.show(this.iefix);
  },

  hide: function() {
    this.stopIndicator();
    if(Element.getStyle(this.update, 'display')!='none') this.options.onHide(this.element, this.update);
    if(this.iefix) Element.hide(this.iefix);
  },

  startIndicator: function() {
    if(this.options.indicator) Element.show(this.options.indicator);
  },

  stopIndicator: function() {
    if(this.options.indicator) Element.hide(this.options.indicator);
  },

  onKeyPress: function(event) {
    if(this.active)
      switch(event.keyCode) {
       case Event.KEY_TAB:
       case Event.KEY_RETURN:
         this.selectEntry();
         Event.stop(event);
       case Event.KEY_ESC:
         this.hide();
         this.active = false;
         Event.stop(event);
         return;
       case Event.KEY_LEFT:
       case Event.KEY_RIGHT:
         return;
       case Event.KEY_UP:
         this.markPrevious();
         this.render();
         Event.stop(event);
         return;
       case Event.KEY_DOWN:
         this.markNext();
         this.render();
         Event.stop(event);
         return;
      }
     else 
       if(event.keyCode==Event.KEY_TAB || event.keyCode==Event.KEY_RETURN || 
         (Prototype.Browser.WebKit > 0 && event.keyCode == 0)) return;

    this.changed = true;
    this.hasFocus = true;

    if(this.observer) clearTimeout(this.observer);
      this.observer = 
        setTimeout(this.onObserverEvent.bind(this), this.options.frequency*1000);
  },

  activate: function() {
    this.changed = false;
    this.hasFocus = true;
    this.getUpdatedChoices();
  },

  onHover: function(event) {
    var element = Event.findElement(event, 'LI');
    if(this.index != element.autocompleteIndex) 
    {
        this.index = element.autocompleteIndex;
        this.render();
    }
    Event.stop(event);
  },
  
  onClick: function(event) {
    var element = Event.findElement(event, 'LI');
    this.index = element.autocompleteIndex;
    this.selectEntry();
    this.hide();
  },
  
  onBlur: function(event) {
    // needed to make click events working
    setTimeout(this.hide.bind(this), 250);
    this.hasFocus = false;
    this.active = false;     
  }, 
  
  render: function() {
    if(this.entryCount > 0) {
      for (var i = 0; i < this.entryCount; i++)
        this.index==i ? 
          Element.addClassName(this.getEntry(i),"selected") : 
          Element.removeClassName(this.getEntry(i),"selected");
      if(this.hasFocus) { 
        this.show();
        this.active = true;
      }
    } else {
      this.active = false;
      this.hide();
    }
  },
  
  markPrevious: function() {
    if(this.index > 0) this.index--
      else this.index = this.entryCount-1;
    this.getEntry(this.index).scrollIntoView(true);
  },
  
  markNext: function() {
    if(this.index < this.entryCount-1) this.index++
      else this.index = 0;
    this.getEntry(this.index).scrollIntoView(false);
  },
  
  getEntry: function(index) {
    return this.update.firstChild.childNodes[index];
  },
  
  getCurrentEntry: function() {
    return this.getEntry(this.index);
  },
  
  selectEntry: function() {
    this.active = false;
    this.updateElement(this.getCurrentEntry());
  },

  updateElement: function(selectedElement) {
    if (this.options.updateElement) {
      this.options.updateElement(selectedElement);
      return;
    }
    var value = '';
    if (this.options.select) {
      var nodes = $(selectedElement).select('.' + this.options.select) || [];
      if(nodes.length>0) value = Element.collectTextNodes(nodes[0], this.options.select);
    } else
      value = Element.collectTextNodesIgnoreClass(selectedElement, 'informal');
    
    var bounds = this.getTokenBounds();
    if (bounds[0] != -1) {
      var newValue = this.element.value.substr(0, bounds[0]);
      var whitespace = this.element.value.substr(bounds[0]).match(/^\s+/);
      if (whitespace)
        newValue += whitespace[0];
      this.element.value = newValue + value + this.element.value.substr(bounds[1]);
    } else {
      this.element.value = value;
    }
    this.oldElementValue = this.element.value;
    this.element.focus();
    
    if (this.options.afterUpdateElement)
      this.options.afterUpdateElement(this.element, selectedElement);
  },

  updateChoices: function(choices) {
    if(!this.changed && this.hasFocus) {
      this.update.innerHTML = choices;
      Element.cleanWhitespace(this.update);
      Element.cleanWhitespace(this.update.down());

      if(this.update.firstChild && this.update.down().childNodes) {
        this.entryCount = 
          this.update.down().childNodes.length;
        for (var i = 0; i < this.entryCount; i++) {
          var entry = this.getEntry(i);
          entry.autocompleteIndex = i;
          this.addObservers(entry);
        }
      } else { 
        this.entryCount = 0;
      }

      this.stopIndicator();
      this.index = 0;
      
      if(this.entryCount==1 && this.options.autoSelect) {
        this.selectEntry();
        this.hide();
      } else {
        this.render();
      }
    }
  },

  addObservers: function(element) {
    Event.observe(element, "mouseover", this.onHover.bindAsEventListener(this));
    Event.observe(element, "click", this.onClick.bindAsEventListener(this));
  },

  onObserverEvent: function() {
    this.changed = false;   
    this.tokenBounds = null;
    if(this.getToken().length>=this.options.minChars) {
      this.getUpdatedChoices();
    } else {
      this.active = false;
      this.hide();
    }
    this.oldElementValue = this.element.value;
  },

  getToken: function() {
    var bounds = this.getTokenBounds();
    return this.element.value.substring(bounds[0], bounds[1]).strip();
  },

  getTokenBounds: function() {
    if (null != this.tokenBounds) return this.tokenBounds;
    var value = this.element.value;
    if (value.strip().empty()) return [-1, 0];
    var diff = arguments.callee.getFirstDifferencePos(value, this.oldElementValue);
    var offset = (diff == this.oldElementValue.length ? 1 : 0);
    var prevTokenPos = -1, nextTokenPos = value.length;
    var tp;
    for (var index = 0, l = this.options.tokens.length; index < l; ++index) {
      tp = value.lastIndexOf(this.options.tokens[index], diff + offset - 1);
      if (tp > prevTokenPos) prevTokenPos = tp;
      tp = value.indexOf(this.options.tokens[index], diff + offset);
      if (-1 != tp && tp < nextTokenPos) nextTokenPos = tp;
    }
    return (this.tokenBounds = [prevTokenPos + 1, nextTokenPos]);
  }
});

Autocompleter.Base.prototype.getTokenBounds.getFirstDifferencePos = function(newS, oldS) {
  var boundary = Math.min(newS.length, oldS.length);
  for (var index = 0; index < boundary; ++index)
    if (newS[index] != oldS[index])
      return index;
  return boundary;
};

Ajax.Autocompleter = Class.create(Autocompleter.Base, {
  initialize: function(element, update, url, options) {
    this.baseInitialize(element, update, options);
    this.options.asynchronous  = true;
    this.options.onComplete    = this.onComplete.bind(this);
    this.options.defaultParams = this.options.parameters || null;
    this.url                   = url;
  },

  getUpdatedChoices: function() {
    this.startIndicator();
    
    var entry = encodeURIComponent(this.options.paramName) + '=' + 
      encodeURIComponent(this.getToken());

    this.options.parameters = this.options.callback ?
      this.options.callback(this.element, entry) : entry;

    if(this.options.defaultParams) 
      this.options.parameters += '&' + this.options.defaultParams;
    
    new Ajax.Request(this.url, this.options);
  },

  onComplete: function(request) {
    this.updateChoices(request.responseText);
  }
});

// The local array autocompleter. Used when you'd prefer to
// inject an array of autocompletion options into the page, rather
// than sending out Ajax queries, which can be quite slow sometimes.
//
// The constructor takes four parameters. The first two are, as usual,
// the id of the monitored textbox, and id of the autocompletion menu.
// The third is the array you want to autocomplete from, and the fourth
// is the options block.
//
// Extra local autocompletion options:
// - choices - How many autocompletion choices to offer
//
// - partialSearch - If false, the autocompleter will match entered
//                    text only at the beginning of strings in the 
//                    autocomplete array. Defaults to true, which will
//                    match text at the beginning of any *word* in the
//                    strings in the autocomplete array. If you want to
//                    search anywhere in the string, additionally set
//                    the option fullSearch to true (default: off).
//
// - fullSsearch - Search anywhere in autocomplete array strings.
//
// - partialChars - How many characters to enter before triggering
//                   a partial match (unlike minChars, which defines
//                   how many characters are required to do any match
//                   at all). Defaults to 2.
//
// - ignoreCase - Whether to ignore case when autocompleting.
//                 Defaults to true.
//
// It's possible to pass in a custom function as the 'selector' 
// option, if you prefer to write your own autocompletion logic.
// In that case, the other options above will not apply unless
// you support them.

Autocompleter.Local = Class.create(Autocompleter.Base, {
  initialize: function(element, update, array, options) {
    this.baseInitialize(element, update, options);
    this.options.array = array;
  },

  getUpdatedChoices: function() {
    this.updateChoices(this.options.selector(this));
  },

  setOptions: function(options) {
    this.options = Object.extend({
      choices: 10,
      partialSearch: true,
      partialChars: 2,
      ignoreCase: true,
      fullSearch: false,
      selector: function(instance) {
        var ret       = []; // Beginning matches
        var partial   = []; // Inside matches
        var entry     = instance.getToken();
        var count     = 0;

        for (var i = 0; i < instance.options.array.length &&  
          ret.length < instance.options.choices ; i++) { 

          var elem = instance.options.array[i];
          var foundPos = instance.options.ignoreCase ? 
            elem.toLowerCase().indexOf(entry.toLowerCase()) : 
            elem.indexOf(entry);

          while (foundPos != -1) {
            if (foundPos == 0 && elem.length != entry.length) { 
              ret.push("<li><strong>" + elem.substr(0, entry.length) + "</strong>" + 
                elem.substr(entry.length) + "</li>");
              break;
            } else if (entry.length >= instance.options.partialChars && 
              instance.options.partialSearch && foundPos != -1) {
              if (instance.options.fullSearch || /\s/.test(elem.substr(foundPos-1,1))) {
                partial.push("<li>" + elem.substr(0, foundPos) + "<strong>" +
                  elem.substr(foundPos, entry.length) + "</strong>" + elem.substr(
                  foundPos + entry.length) + "</li>");
                break;
              }
            }

            foundPos = instance.options.ignoreCase ? 
              elem.toLowerCase().indexOf(entry.toLowerCase(), foundPos + 1) : 
              elem.indexOf(entry, foundPos + 1);

          }
        }
        if (partial.length)
          ret = ret.concat(partial.slice(0, instance.options.choices - ret.length))
        return "<ul>" + ret.join('') + "</ul>";
      }
    }, options || { });
  }
});

// AJAX in-place editor and collection editor
// Full rewrite by Christophe Porteneuve <tdd@tddsworld.com> (April 2007).

// Use this if you notice weird scrolling problems on some browsers,
// the DOM might be a bit confused when this gets called so do this
// waits 1 ms (with setTimeout) until it does the activation
Field.scrollFreeActivate = function(field) {
  setTimeout(function() {
    Field.activate(field);
  }, 1);
}

Ajax.InPlaceEditor = Class.create({
  initialize: function(element, url, options) {
    this.url = url;
    this.element = element = $(element);
    this.prepareOptions();
    this._controls = { };
    arguments.callee.dealWithDeprecatedOptions(options); // DEPRECATION LAYER!!!
    Object.extend(this.options, options || { });
    if (!this.options.formId && this.element.id) {
      this.options.formId = this.element.id + '-inplaceeditor';
      if ($(this.options.formId))
        this.options.formId = '';
    }
    if (this.options.externalControl)
      this.options.externalControl = $(this.options.externalControl);
    if (!this.options.externalControl)
      this.options.externalControlOnly = false;
    this._originalBackground = this.element.getStyle('background-color') || 'transparent';
    this.element.title = this.options.clickToEditText;
    this._boundCancelHandler = this.handleFormCancellation.bind(this);
    this._boundComplete = (this.options.onComplete || Prototype.emptyFunction).bind(this);
    this._boundFailureHandler = this.handleAJAXFailure.bind(this);
    this._boundSubmitHandler = this.handleFormSubmission.bind(this);
    this._boundWrapperHandler = this.wrapUp.bind(this);
    this.registerListeners();
  },
  checkForEscapeOrReturn: function(e) {
    if (!this._editing || e.ctrlKey || e.altKey || e.shiftKey) return;
    if (Event.KEY_ESC == e.keyCode)
      this.handleFormCancellation(e);
    else if (Event.KEY_RETURN == e.keyCode)
      this.handleFormSubmission(e);
  },
  createControl: function(mode, handler, extraClasses) {
    var control = this.options[mode + 'Control'];
    var text = this.options[mode + 'Text'];
    if ('button' == control) {
      var btn = document.createElement('input');
      btn.type = 'submit';
      btn.value = text;
      btn.className = 'editor_' + mode + '_button';
      if ('cancel' == mode)
        btn.onclick = this._boundCancelHandler;
      this._form.appendChild(btn);
      this._controls[mode] = btn;
    } else if ('link' == control) {
      var link = document.createElement('a');
      link.href = '#';
      link.appendChild(document.createTextNode(text));
      link.onclick = 'cancel' == mode ? this._boundCancelHandler : this._boundSubmitHandler;
      link.className = 'editor_' + mode + '_link';
      if (extraClasses)
        link.className += ' ' + extraClasses;
      this._form.appendChild(link);
      this._controls[mode] = link;
    }
  },
  createEditField: function() {
    var text = (this.options.loadTextURL ? this.options.loadingText : this.getText());
    var fld;
    if (1 >= this.options.rows && !/\r|\n/.test(this.getText())) {
      fld = document.createElement('input');
      fld.type = 'text';
      var size = this.options.size || this.options.cols || 0;
      if (0 < size) fld.size = size;
    } else {
      fld = document.createElement('textarea');
      fld.rows = (1 >= this.options.rows ? this.options.autoRows : this.options.rows);
      fld.cols = this.options.cols || 40;
    }
    fld.name = this.options.paramName;
    fld.value = text; // No HTML breaks conversion anymore
    fld.className = 'editor_field';
    if (this.options.submitOnBlur)
      fld.onblur = this._boundSubmitHandler;
    this._controls.editor = fld;
    if (this.options.loadTextURL)
      this.loadExternalText();
    this._form.appendChild(this._controls.editor);
  },
  createForm: function() {
    var ipe = this;
    function addText(mode, condition) {
      var text = ipe.options['text' + mode + 'Controls'];
      if (!text || condition === false) return;
      ipe._form.appendChild(document.createTextNode(text));
    };
    this._form = $(document.createElement('form'));
    this._form.id = this.options.formId;
    this._form.addClassName(this.options.formClassName);
    this._form.onsubmit = this._boundSubmitHandler;
    this.createEditField();
    if ('textarea' == this._controls.editor.tagName.toLowerCase())
      this._form.appendChild(document.createElement('br'));
    if (this.options.onFormCustomization)
      this.options.onFormCustomization(this, this._form);
    addText('Before', this.options.okControl || this.options.cancelControl);
    this.createControl('ok', this._boundSubmitHandler);
    addText('Between', this.options.okControl && this.options.cancelControl);
    this.createControl('cancel', this._boundCancelHandler, 'editor_cancel');
    addText('After', this.options.okControl || this.options.cancelControl);
  },
  destroy: function() {
    if (this._oldInnerHTML)
      this.element.innerHTML = this._oldInnerHTML;
    this.leaveEditMode();
    this.unregisterListeners();
  },
  enterEditMode: function(e) {
    if (this._saving || this._editing) return;
    this._editing = true;
    this.triggerCallback('onEnterEditMode');
    if (this.options.externalControl)
      this.options.externalControl.hide();
    this.element.hide();
    this.createForm();
    this.element.parentNode.insertBefore(this._form, this.element);
    if (!this.options.loadTextURL)
      this.postProcessEditField();
    if (e) Event.stop(e);
  },
  enterHover: function(e) {
    if (this.options.hoverClassName)
      this.element.addClassName(this.options.hoverClassName);
    if (this._saving) return;
    this.triggerCallback('onEnterHover');
  },
  getText: function() {
    return this.element.innerHTML;
  },
  handleAJAXFailure: function(transport) {
    this.triggerCallback('onFailure', transport);
    if (this._oldInnerHTML) {
      this.element.innerHTML = this._oldInnerHTML;
      this._oldInnerHTML = null;
    }
  },
  handleFormCancellation: function(e) {
    this.wrapUp();
    if (e) Event.stop(e);
  },
  handleFormSubmission: function(e) {
    var form = this._form;
    var value = $F(this._controls.editor);
    this.prepareSubmission();
    var params = this.options.callback(form, value) || '';
    if (Object.isString(params))
      params = params.toQueryParams();
    params.editorId = this.element.id;
    if (this.options.htmlResponse) {
      var options = Object.extend({ evalScripts: true }, this.options.ajaxOptions);
      Object.extend(options, {
        parameters: params,
        onComplete: this._boundWrapperHandler,
        onFailure: this._boundFailureHandler
      });
      new Ajax.Updater({ success: this.element }, this.url, options);
    } else {
      var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
      Object.extend(options, {
        parameters: params,
        onComplete: this._boundWrapperHandler,
        onFailure: this._boundFailureHandler
      });
      new Ajax.Request(this.url, options);
    }
    if (e) Event.stop(e);
  },
  leaveEditMode: function() {
    this.element.removeClassName(this.options.savingClassName);
    this.removeForm();
    this.leaveHover();
    this.element.style.backgroundColor = this._originalBackground;
    this.element.show();
    if (this.options.externalControl)
      this.options.externalControl.show();
    this._saving = false;
    this._editing = false;
    this._oldInnerHTML = null;
    this.triggerCallback('onLeaveEditMode');
  },
  leaveHover: function(e) {
    if (this.options.hoverClassName)
      this.element.removeClassName(this.options.hoverClassName);
    if (this._saving) return;
    this.triggerCallback('onLeaveHover');
  },
  loadExternalText: function() {
    this._form.addClassName(this.options.loadingClassName);
    this._controls.editor.disabled = true;
    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
    Object.extend(options, {
      parameters: 'editorId=' + encodeURIComponent(this.element.id),
      onComplete: Prototype.emptyFunction,
      onSuccess: function(transport) {
        this._form.removeClassName(this.options.loadingClassName);
        var text = transport.responseText;
        if (this.options.stripLoadedTextTags)
          text = text.stripTags();
        this._controls.editor.value = text;
        this._controls.editor.disabled = false;
        this.postProcessEditField();
      }.bind(this),
      onFailure: this._boundFailureHandler
    });
    new Ajax.Request(this.options.loadTextURL, options);
  },
  postProcessEditField: function() {
    var fpc = this.options.fieldPostCreation;
    if (fpc)
      $(this._controls.editor)['focus' == fpc ? 'focus' : 'activate']();
  },
  prepareOptions: function() {
    this.options = Object.clone(Ajax.InPlaceEditor.DefaultOptions);
    Object.extend(this.options, Ajax.InPlaceEditor.DefaultCallbacks);
    [this._extraDefaultOptions].flatten().compact().each(function(defs) {
      Object.extend(this.options, defs);
    }.bind(this));
  },
  prepareSubmission: function() {
    this._saving = true;
    this.removeForm();
    this.leaveHover();
    this.showSaving();
  },
  registerListeners: function() {
    this._listeners = { };
    var listener;
    $H(Ajax.InPlaceEditor.Listeners).each(function(pair) {
      listener = this[pair.value].bind(this);
      this._listeners[pair.key] = listener;
      if (!this.options.externalControlOnly)
        this.element.observe(pair.key, listener);
      if (this.options.externalControl)
        this.options.externalControl.observe(pair.key, listener);
    }.bind(this));
  },
  removeForm: function() {
    if (!this._form) return;
    this._form.remove();
    this._form = null;
    this._controls = { };
  },
  showSaving: function() {
    this._oldInnerHTML = this.element.innerHTML;
    this.element.innerHTML = this.options.savingText;
    this.element.addClassName(this.options.savingClassName);
    this.element.style.backgroundColor = this._originalBackground;
    this.element.show();
  },
  triggerCallback: function(cbName, arg) {
    if ('function' == typeof this.options[cbName]) {
      this.options[cbName](this, arg);
    }
  },
  unregisterListeners: function() {
    $H(this._listeners).each(function(pair) {
      if (!this.options.externalControlOnly)
        this.element.stopObserving(pair.key, pair.value);
      if (this.options.externalControl)
        this.options.externalControl.stopObserving(pair.key, pair.value);
    }.bind(this));
  },
  wrapUp: function(transport) {
    this.leaveEditMode();
    // Can't use triggerCallback due to backward compatibility: requires
    // binding + direct element
    this._boundComplete(transport, this.element);
  }
});

Object.extend(Ajax.InPlaceEditor.prototype, {
  dispose: Ajax.InPlaceEditor.prototype.destroy
});

Ajax.InPlaceCollectionEditor = Class.create(Ajax.InPlaceEditor, {
  initialize: function($super, element, url, options) {
    this._extraDefaultOptions = Ajax.InPlaceCollectionEditor.DefaultOptions;
    $super(element, url, options);
  },

  createEditField: function() {
    var list = document.createElement('select');
    list.name = this.options.paramName;
    list.size = 1;
    this._controls.editor = list;
    this._collection = this.options.collection || [];
    if (this.options.loadCollectionURL)
      this.loadCollection();
    else
      this.checkForExternalText();
    this._form.appendChild(this._controls.editor);
  },

  loadCollection: function() {
    this._form.addClassName(this.options.loadingClassName);
    this.showLoadingText(this.options.loadingCollectionText);
    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
    Object.extend(options, {
      parameters: 'editorId=' + encodeURIComponent(this.element.id),
      onComplete: Prototype.emptyFunction,
      onSuccess: function(transport) {
        var js = transport.responseText.strip();
        if (!/^\[.*\]$/.test(js)) // TODO: improve sanity check
          throw 'Server returned an invalid collection representation.';
        this._collection = eval(js);
        this.checkForExternalText();
      }.bind(this),
      onFailure: this.onFailure
    });
    new Ajax.Request(this.options.loadCollectionURL, options);
  },

  showLoadingText: function(text) {
    this._controls.editor.disabled = true;
    var tempOption = this._controls.editor.firstChild;
    if (!tempOption) {
      tempOption = document.createElement('option');
      tempOption.value = '';
      this._controls.editor.appendChild(tempOption);
      tempOption.selected = true;
    }
    tempOption.update((text || '').stripScripts().stripTags());
  },

  checkForExternalText: function() {
    this._text = this.getText();
    if (this.options.loadTextURL)
      this.loadExternalText();
    else
      this.buildOptionList();
  },

  loadExternalText: function() {
    this.showLoadingText(this.options.loadingText);
    var options = Object.extend({ method: 'get' }, this.options.ajaxOptions);
    Object.extend(options, {
      parameters: 'editorId=' + encodeURIComponent(this.element.id),
      onComplete: Prototype.emptyFunction,
      onSuccess: function(transport) {
        this._text = transport.responseText.strip();
        this.buildOptionList();
      }.bind(this),
      onFailure: this.onFailure
    });
    new Ajax.Request(this.options.loadTextURL, options);
  },

  buildOptionList: function() {
    this._form.removeClassName(this.options.loadingClassName);
    this._collection = this._collection.map(function(entry) {
      return 2 === entry.length ? entry : [entry, entry].flatten();
    });
    var marker = ('value' in this.options) ? this.options.value : this._text;
    var textFound = this._collection.any(function(entry) {
      return entry[0] == marker;
    }.bind(this));
    this._controls.editor.update('');
    var option;
    this._collection.each(function(entry, index) {
      option = document.createElement('option');
      option.value = entry[0];
      option.selected = textFound ? entry[0] == marker : 0 == index;
      option.appendChild(document.createTextNode(entry[1]));
      this._controls.editor.appendChild(option);
    }.bind(this));
    this._controls.editor.disabled = false;
    Field.scrollFreeActivate(this._controls.editor);
  }
});

//**** DEPRECATION LAYER FOR InPlace[Collection]Editor! ****
//**** This only  exists for a while,  in order to  let ****
//**** users adapt to  the new API.  Read up on the new ****
//**** API and convert your code to it ASAP!            ****

Ajax.InPlaceEditor.prototype.initialize.dealWithDeprecatedOptions = function(options) {
  if (!options) return;
  function fallback(name, expr) {
    if (name in options || expr === undefined) return;
    options[name] = expr;
  };
  fallback('cancelControl', (options.cancelLink ? 'link' : (options.cancelButton ? 'button' :
    options.cancelLink == options.cancelButton == false ? false : undefined)));
  fallback('okControl', (options.okLink ? 'link' : (options.okButton ? 'button' :
    options.okLink == options.okButton == false ? false : undefined)));
  fallback('highlightColor', options.highlightcolor);
  fallback('highlightEndColor', options.highlightendcolor);
};

Object.extend(Ajax.InPlaceEditor, {
  DefaultOptions: {
    ajaxOptions: { },
    autoRows: 3,                                // Use when multi-line w/ rows == 1
    cancelControl: 'link',                      // 'link'|'button'|false
    cancelText: 'cancel',
    clickToEditText: 'Click to edit',
    externalControl: null,                      // id|elt
    externalControlOnly: false,
    fieldPostCreation: 'activate',              // 'activate'|'focus'|false
    formClassName: 'inplaceeditor-form',
    formId: null,                               // id|elt
    highlightColor: '#ffff99',
    highlightEndColor: '#ffffff',
    hoverClassName: '',
    htmlResponse: true,
    loadingClassName: 'inplaceeditor-loading',
    loadingText: 'Loading...',
    okControl: 'button',                        // 'link'|'button'|false
    okText: 'ok',
    paramName: 'value',
    rows: 1,                                    // If 1 and multi-line, uses autoRows
    savingClassName: 'inplaceeditor-saving',
    savingText: 'Saving...',
    size: 0,
    stripLoadedTextTags: false,
    submitOnBlur: false,
    textAfterControls: '',
    textBeforeControls: '',
    textBetweenControls: ''
  },
  DefaultCallbacks: {
    callback: function(form) {
      return Form.serialize(form);
    },
    onComplete: function(transport, element) {
      // For backward compatibility, this one is bound to the IPE, and passes
      // the element directly.  It was too often customized, so we don't break it.
      new Effect.Highlight(element, {
        startcolor: this.options.highlightColor, keepBackgroundImage: true });
    },
    onEnterEditMode: null,
    onEnterHover: function(ipe) {
      ipe.element.style.backgroundColor = ipe.options.highlightColor;
      if (ipe._effect)
        ipe._effect.cancel();
    },
    onFailure: function(transport, ipe) {
      alert('Error communication with the server: ' + transport.responseText.stripTags());
    },
    onFormCustomization: null, // Takes the IPE and its generated form, after editor, before controls.
    onLeaveEditMode: null,
    onLeaveHover: function(ipe) {
      ipe._effect = new Effect.Highlight(ipe.element, {
        startcolor: ipe.options.highlightColor, endcolor: ipe.options.highlightEndColor,
        restorecolor: ipe._originalBackground, keepBackgroundImage: true
      });
    }
  },
  Listeners: {
    click: 'enterEditMode',
    keydown: 'checkForEscapeOrReturn',
    mouseover: 'enterHover',
    mouseout: 'leaveHover'
  }
});

Ajax.InPlaceCollectionEditor.DefaultOptions = {
  loadingCollectionText: 'Loading options...'
};

// Delayed observer, like Form.Element.Observer, 
// but waits for delay after last key input
// Ideal for live-search fields

Form.Element.DelayedObserver = Class.create({
  initialize: function(element, delay, callback) {
    this.delay     = delay || 0.5;
    this.element   = $(element);
    this.callback  = callback;
    this.timer     = null;
    this.lastValue = $F(this.element); 
    Event.observe(this.element,'keyup',this.delayedListener.bindAsEventListener(this));
  },
  delayedListener: function(event) {
    if(this.lastValue == $F(this.element)) return;
    if(this.timer) clearTimeout(this.timer);
    this.timer = setTimeout(this.onTimerEvent.bind(this), this.delay * 1000);
    this.lastValue = $F(this.element);
  },
  onTimerEvent: function() {
    this.timer = null;
    this.callback(this.element, $F(this.element));
  }
});

/* swfobject.js */
/*	SWFObject v2.0 <http://code.google.com/p/swfobject/>
	Copyright (c) 2007 Geoff Stearns, Michael Williams, and Bobby van der Sluis
	This software is released under the MIT License <http://www.opensource.org/licenses/mit-license.php>
*/
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/* shadowbox/adapter/shadowbox-prototype.js */
/**
 * An adapter for the Shadowbox media viewer and the Prototype + Scriptaculous
 * JavaScript framework.
 *
 * This file is part of Shadowbox.
 *
 * Shadowbox is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * Shadowbox is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for
 * more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Shadowbox.  If not, see <http://www.gnu.org/licenses/>.
 *
 * @author      Michael J. I. Jackson <mjijackson@gmail.com>
 * @copyright   2007 Michael J. I. Jackson
 * @license     http://www.gnu.org/licenses/lgpl-3.0.txt GNU LGPL 3.0
 * @version     SVN: $Id: shadowbox-prototype.js 55 2008-01-29 09:42:41Z mjijackson $
 */

if(typeof Prototype == 'undefined'){
    throw 'Unable to load Shadowbox, Prototype framework not found.';
}
if(typeof Effect == 'undefined'){
    throw 'Unable to load Shadowbox, Scriptaculous effects framework not found.';
}

// create the Shadowbox object first
var Shadowbox = {};

Shadowbox.lib = {

    /**
     * Gets the value of the style on the given element.
     *
     * @param   {HTMLElement}   el      The DOM element
     * @param   {String}        style   The name of the style (e.g. margin-top)
     * @return  {mixed}                 The value of the given style
     * @public
     */
    getStyle: function(el, style){
        return Element.getStyle(el, style);
    },

    /**
     * Sets the style on the given element to the given value. May be an
     * object to specify multiple values.
     *
     * @param   {HTMLElement}   el      The DOM element
     * @param   {String/Object} style   The name of the style to set if a
     *                                  string, or an object of name =>
     *                                  value pairs
     * @param   {String}        value   The value to set the given style to
     * @return  void
     * @public
     */
    setStyle: function(el, style, value){
        if(typeof style != 'object'){
            var temp = {};
            temp[style] = value;
            style = temp;
        }
        Element.setStyle(el, style);
    },

    /**
     * Gets a reference to the given element.
     *
     * @param   {String/HTMLElement}    el      The element to fetch
     * @return  {HTMLElement}                   A reference to the element
     * @public
     */
    get: function(el){
        return $(el);
    },

    /**
     * Removes an element from the DOM.
     *
     * @param   {HTMLElement}           el      The element to remove
     * @return  void
     * @public
     */
    remove: function(el){
        Element.remove(el);
    },

    /**
     * Gets the target of the given event. The event object passed will be
     * the same object that is passed to listeners registered with
     * addEvent().
     *
     * @param   {mixed}                 e       The event object
     * @return  {HTMLElement}                   The event's target element
     * @public
     */
    getTarget: function(e){
        return Event.element(e);
    },

    /**
     * Prevents the event's default behavior. The event object passed will
     * be the same object that is passed to listeners registered with
     * addEvent().
     *
     * @param   {mixed}                 e       The event object
     * @return  void
     * @public
     */
    preventDefault: function(e){
        Event.stop(e);
    },

    /**
     * Adds an event listener to the given element. It is expected that this
     * function will be passed the event as its first argument.
     *
     * @param   {HTMLElement}   el          The DOM element to listen to
     * @param   {String}        name        The name of the event to register
     *                                      (i.e. 'click', 'scroll', etc.)
     * @param   {Function}      handler     The event handler function
     * @return  void
     * @public
     */
    addEvent: function(el, name, handler){
        Event.observe(el, name, handler);
    },

    /**
     * Removes an event listener from the given element.
     *
     * @param   {HTMLElement}   el          The DOM element to stop listening to
     * @param   {String}        name        The name of the event to stop
     *                                      listening for (i.e. 'click')
     * @param   {Function}      handler     The event handler function
     * @return  void
     * @public
     */
    removeEvent: function(el, name, handler){
        Event.stopObserving(el, name, handler);
    },

    /**
     * Animates numerous styles of the given element. The second parameter
     * of this function will be an object of the type that is expected by
     * YAHOO.util.Anim. See http://developer.yahoo.com/yui/docs/YAHOO.util.Anim.html
     * for more information.
     *
     * @param   {HTMLElement}   el          The DOM element to animate
     * @param   {Object}        obj         The animation attributes/parameters
     * @param   {Number}        duration    The duration of the animation
     *                                      (in seconds)
     * @param   {Function}      callback    A callback function to call when
     *                                      the animation completes
     * @return  void
     * @public
     */
    animate: function(el, obj, duration, callback){
        var o = {};
        for(var p in obj){
            for(var p in obj){
                o[p] = String(obj[p].to);
                if(p != 'opacity') o[p] += 'px';
            }
        }
        return new Effect.Morph(el, {
            afterFinish:    callback,
            duration:       duration,
            style:          o
        });
    }

};

/* shadowbox/shadowbox.js */
/**
 * A media-viewer script for web pages that allows content to be viewed without
 * navigating away from the original linking page.
 *
 * This file is part of Shadowbox.
 *
 * Shadowbox is free software: you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License as published by the Free
 * Software Foundation, either version 3 of the License, or (at your option)
 * any later version.
 *
 * Shadowbox is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for
 * more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with Shadowbox. If not, see <http://www.gnu.org/licenses/>.
 *
 * @author      Michael J. I. Jackson <mjijackson@gmail.com>
 * @copyright   2007 Michael J. I. Jackson
 * @license     http://www.gnu.org/licenses/lgpl-3.0.txt GNU LGPL 3.0
 * @version     SVN: $Id: shadowbox.js 75 2008-02-21 16:51:29Z mjijackson $
 */

if(typeof Shadowbox == 'undefined'){
    throw 'Unable to load Shadowbox, no base library adapter found.';
}

/**
 * The Shadowbox class. Used to display different media on a web page using a
 * Lightbox-like effect.
 *
 * Useful resources:
 * - http://www.alistapart.com/articles/byebyeembed
 * - http://www.w3.org/TR/html401/struct/objects.html
 * - http://www.dyn-web.com/dhtml/iframes/
 * - http://support.microsoft.com/kb/316992
 * - http://www.apple.com/quicktime/player/specs.html
 * - http://www.howtocreate.co.uk/wrongWithIE/?chapter=navigator.plugins
 *
 * @class       Shadowbox
 * @author      Michael J. I. Jackson <mjijackson@gmail.com>
 * @singleton
 */
(function(){

    /**
     * The current version of Shadowbox.
     *
     * @property    {String}    version
     * @private
     */
    var version = '1.0';

    /**
     * Contains the default options for Shadowbox. This object is almost
     * entirely customizable.
     *
     * @property    {Object}    options
     * @private
     */
    var options = {

        /**
         * A base URL that will be prepended to the loadingImage, flvPlayer, and
         * overlayBgImage options to save on typing.
         *
         * @var     {String}    assetURL
         */
        assetURL:           '',

        /**
         * The path to the image to display while loading.
         *
         * @var     {String}    loadingImage
         */
        loadingImage:       '/img/loading-light.gif',

        /**
         * Enable animations.
         *
         * @var     {Boolean}   animate
         */
        animate:            true,

        /**
         * Specifies the sequence of the height and width animations. May be
         * 'wh' (width then height), 'hw' (height then width), or 'sync' (both
         * at the same time). Of course this will only work if animate is true.
         *
         * @var     {String}    animSequence
         */
        animSequence:       'wh',

        /**
         * The path to flvplayer.swf.
         *
         * @var     {String}    flvPlayer
         */
        flvPlayer:          'flvplayer.swf',

        /**
         * The background color and opacity of the overlay. Note: When viewing
         * movie files on FF Mac, the default background image will be used
         * because that browser has problems displaying movies above layers
         * that aren't 100% opaque.
         *
         * @var     {String}    overlayColor
         */
        overlayColor:       '#000',

        /**
         * The background opacity to use for the overlay.
         *
         * @var     {Number}    overlayOpacity
         */
        overlayOpacity:     0.45,

        /**
         * A background image to use for browsers such as FF Mac that don't
         * support displaying movie content over backgrounds that aren't 100%
         * opaque.
         *
         * @var     {String}    overlayBgImage
         */
        overlayBgImage:     'images/overlay-85.png',

        /**
         * Listen to the overlay for clicks. If the user clicks the overlay,
         * it will trigger Shadowbox.close().
         *
         * @var     {Boolean}   listenOverlay
         */
        listenOverlay:      true,

        /**
         * Automatically play movies.
         *
         * @var     {Boolean}   autoplayMovies
         */
        autoplayMovies:     true,

        /**
         * Enable movie controllers on movie players.
         *
         * @var     {Boolean}   showMovieControls
         */
        showMovieControls:  true,

        /**
         * The duration of the resizing animations (in seconds).
         *
         * @var     {Number}    resizeDuration
         */
        resizeDuration:     0.15,

        /**
         * The duration of the overlay fade animation (in seconds).
         *
         * @var     {Number}    fadeDuration
         */
        fadeDuration:       0.35,

        /**
         * Show the navigation controls.
         *
         * @var     {Boolean}   displayNav
         */
        displayNav:         true,

        /**
         * Enable continuous galleries. When this is true, users will be able
         * to skip to the first gallery image from the last using next and vice
         * versa.
         *
         * @var     {Boolean}   continuous
         */
        continuous:         false,

        /**
         * Display the gallery counter.
         *
         * @var     {Boolean}   displayCounter
         */
        displayCounter:     true,

        /**
         * This option may be either 'default' or 'skip'. The default counter is
         * a simple '1 of 5' message. The skip counter displays a link for each
         * piece in the gallery that enables a user to skip directly to any
         * piece.
         *
         * @var     {String}    counterType
         */
        counterType:        'default',

        /**
         * The amount of padding to maintain around the viewport edge (in
         * pixels). This only applies when the image is very large and takes up
         * the entire viewport.
         *
         * @var     {Number}    viewportPadding
         */
        viewportPadding:    20,

        /**
         * How to handle images that are too large for the viewport. 'resize'
         * will resize the image while preserving aspect ratio and display it at
         * the smaller resolution. 'drag' will display the image at its native
         * resolution but it will be draggable within the Shadowbox. 'none' will
         * display the image at its native resolution but it may be cropped.
         *
         * @var     {String}    handleLgImages
         */
        handleLgImages:     'resize',

        /**
         * The initial height of Shadowbox (in pixels).
         *
         * @var     {Number}    initialHeight
         */
        initialHeight:      160,

        /**
         * The initial width of Shadowbox (in pixels).
         *
         * @var     {Number}    initialWidth
         */
        initialWidth:       320,

        /**
         * Enable keyboard control. Note: If you disable the keys, you may want
         * to change the visual styles for the navigation elements that suggest
         * keyboard shortcuts.
         *
         * @var     {Boolean}   enableKeys
         */
        enableKeys:         true,

        /**
         * The keys used to control Shadowbox. Note: In order to use these,
         * enableKeys must be true. Key values or key codes may be used.
         *
         * @var     {Array}
         */
        keysClose:          ['c', 'q', 27], // c, q, or esc
        keysNext:           ['s', 39],      // n or right arrow
        keysPrev:           ['a', 37],      // p or left arrow

        /**
         * A hook function to be fired when Shadowbox opens. The single argument
         * will be the current gallery element.
         *
         * @var     {Function}
         */
        onOpen:             null,

        /**
         * A hook function to be fired when Shadowbox finishes loading its
         * content. The single argument will be the current gallery element on
         * display.
         *
         * @var     {Function}
         */
        onFinish:           null,

        /**
         * A hook function to be fired when Shadowbox changes from one gallery
         * element to the next. The single argument will be the current gallery
         * element that is about to be displayed.
         *
         * @var     {Function}
         */
        onChange:           null,

        /**
         * A hook function that will be fired when Shadowbox closes. The single
         * argument will be the gallery element most recently displayed.
         *
         * @var     {Function}
         */
        onClose:            null,

        /**
         * The mode to use when handling unsupported media. May be either
         * 'remove' or 'link'. If it is 'remove', the unsupported gallery item
         * will merely be removed from the gallery. If it is the only item in
         * the gallery, the link will simply be followed. If it is 'link', a
         * link will be provided to the appropriate plugin page in place of the
         * gallery element.
         *
         * @var     {String}    handleUnsupported
         */
        handleUnsupported:  'link',

        /**
         * Skips calling Shadowbox.setup() in init(). This means that it must
         * be called later manually.
         *
         * @var     {Boolean}   skipSetup
         */
        skipSetup:          false,

        /**
         * Text messages to use for Shadowbox. These are provided so they may be
         * translated into different languages.
         *
         * @var     {Object}    text
         */
        text:           {

            cancel:     'Cancel',

            loading:    'loading',

            close:      '<span class="shortcut">C</span>errar',

            next:       '<span class="shortcut">S</span>iguiente',

            prev:       '<span class="shortcut">A</span>nterior',

            errors:     {
                single: 'You must install the <a href="{0}">{1}</a> browser plugin to view this content.',
                shared: 'You must install both the <a href="{0}">{1}</a> and <a href="{2}">{3}</a> browser plugins to view this content.',
                either: 'You must install either the <a href="{0}">{1}</a> or the <a href="{2}">{3}</a> browser plugin to view this content.'
            }

        },

        /**
         * An object containing names of plugins and links to their respective
         * download pages.
         *
         * @var     {Object}    errors
         */
        errors:         {

            fla:        {
                name:   'Flash',
                url:    'http://www.adobe.com/products/flashplayer/'
            },

            qt:         {
                name:   'QuickTime',
                url:    'http://www.apple.com/quicktime/download/'
            },

            wmp:        {
                name:   'Windows Media Player',
                url:    'http://www.microsoft.com/windows/windowsmedia/'
            },

            f4m:        {
                name:   'Flip4Mac',
                url:    'http://www.flip4mac.com/wmv_download.htm'
            }

        },

        /**
         * The HTML markup to use for Shadowbox. Note: The script depends on
         * most of these elements being present, so don't modify this variable
         * unless you know what you're doing.
         *
         * @var     {Object}    skin
         */
        skin:           {

            main:       '<div id="shadowbox_overlay"></div>' +
                        '<div id="shadowbox_container">' +
                            '<div id="shadowbox">' +
                                '<div id="shadowbox_title">' +
                                    '<div id="shadowbox_title_inner"></div>' +
                                '</div>' +
                                '<div id="shadowbox_body">' +
                                    '<div id="shadowbox_body_inner"></div>' +
                                    '<div id="shadowbox_loading"></div>' +
                                '</div>' +
                                '<div id="shadowbox_toolbar">' +
                                    '<div id="shadowbox_toolbar_inner"></div>' +
                                '</div>' +
                            '</div>' +
                        '</div>',

            loading:    '<img src="{0}" alt="{1}" />' +
                        '<span><a href="javascript:Shadowbox.close();">{2}</a></span>',

            counter:    '<div id="shadowbox_counter">{0}</div>',

            close:      '<div id="shadowbox_nav_close">' +
                            '<a href="javascript:Shadowbox.close();">{0}</a>' +
                        '</div>',

            next:       '<div id="shadowbox_nav_next">' +
                            '<a href="javascript:Shadowbox.next();">{0}</a>' +
                        '</div>',

            prev:       '<div id="shadowbox_nav_previous">' +
                            '<a href="javascript:Shadowbox.previous();">{0}</a>' +
                        '</div>'

        },

        /**
         * An object containing arrays of all supported file extensions. Each
         * property of this object contains an array. If this object is to be
         * modified, it must be done before calling init().
         *
         * - img: Supported image file extensions
         * - qt: Movie file extensions supported by QuickTime
         * - wmp: Movie file extensions supported by Windows Media Player
         * - qtwmp: Movie file extensions supported by both QuickTime and Windows Media Player
         * - iframe: File extensions that will be display in an iframe
         *
         * @var     {Object}    ext
         */
        ext:     {
            img:        ['png', 'jpg', 'jpeg', 'gif', 'bmp'],
            qt:         ['dv', 'mov', 'moov', 'movie', 'mp4'],
            wmp:        ['asf', 'wm', 'wmv'],
            qtwmp:      ['avi', 'mpg', 'mpeg'],
            iframe:     ['asp', 'aspx', 'cgi', 'cfm', 'htm', 'html', 'pl', 'php',
                        'php3', 'php4', 'php5', 'phtml', 'rb', 'rhtml', 'shtml',
                        'txt', 'vbs']
        }

    };

    /**
     * Stores the default set of options in case a custom set of options is used
     * on a link-by-link basis so we can restore them later.
     *
     * @property    {Object}    default_options
     * @private
     */
    var default_options = null;

    /**
     * Shorthand for Shadowbox.lib.
     *
     * @property    {Object}        SL
     * @private
     */
    var SL = Shadowbox.lib;

    /**
     * An object containing some regular expressions we'll need later. Compiled
     * up front for speed.
     *
     * @property    {Object}        RE
     * @private
     */
    var RE = {
        resize:         /(img|swf|flv)/, // file types to resize
        overlay:        /(img|iframe|html|inline)/, // content types to not use an overlay image for on FF Mac
        swf:            /\.swf\s*$/i, // swf file extension
        flv:            /\.flv\s*$/i, // flv file extension
        domain:         /:\/\/(.*?)[:\/]/, // domain prefix
        inline:         /#(.+)$/, // inline element id
        rel:            /^(light|shadow)box/i, // rel attribute format
        gallery:        /^(light|shadow)box\[(.*?)\]/i, // rel attribute format for gallery link
        unsupported:    /^unsupported-(\w+)/, // unsupported media type
        param:          /\s*([a-z_]*?)\s*=\s*(.+)\s*/, // rel string parameter
        empty:          /^(?:br|frame|hr|img|input|link|meta|range|spacer|wbr|area|param|col)$/i // elements that don't have children
    };

    /**
     * A cache of options for links that have been set up for use with
     * Shadowbox.
     *
     * @property    {Array}         cache
     * @private
     */
    var cache = [];

    /**
     * An array of pieces currently being viewed. In the case of non-gallery
     * pieces, this will only hold one object.
     *
     * @property    {Array}         current_gallery
     * @private
     */
    var current_gallery;

    /**
     * The array index of the current_gallery that is currently being viewed.
     *
     * @property    {Number}        current
     * @private
     */
    var current;

    /**
     * Keeps track of the current optimal height of the box. We use this so that
     * if the user resizes the browser window to get a better view, and we're
     * currently at a size smaller than the optimal, we can resize easily.
     *
     * @see         resizeContent()
     * @property    {Number}        optimal_height
     * @private
     */
    var optimal_height = options.initialHeight;

    /**
     * Keeps track of the current optimal width of the box. See optimal_height
     * explanation (above).
     *
     * @property    {Number}        optimal_width
     * @private
     */
    var optimal_width = options.initialWidth;

    /**
     * Keeps track of the current height of the box. This is useful in drag
     * calculations.
     *
     * @property    {Number}        current_height
     * @private
     */
    var current_height = 0;

    /**
     * Keeps track of the current width of the box. Useful in drag calculations.
     *
     * @property    {Number}        current_width
     * @private
     */
    var current_width = 0;

    /**
     * Resource used to preload images. It's class-level so that when a new
     * image is requested, the same resource can be reassigned, cancelling
     * the original's callback.
     *
     * @property    {HTMLElement}   preloader
     * @private
     */
    var preloader;

    /**
     * Keeps track of whether or not Shadowbox has been initialized. We never
     * want to initialize twice.
     *
     * @property    {Boolean}       initialized
     * @private
     */
    var initialized = false;

    /**
     * Keeps track of whether or not Shadowbox is activated.
     *
     * @property    {Boolean}       activated
     * @private
     */
    var activated = false;

    /**
     * Keeps track of 4 floating values (x, y, start_x, & start_y) that are used
     * in the drag calculations.
     *
     * @property    {Object}        drag
     * @private
     */
    var drag;

    /**
     * Holds the draggable element so we don't have to fetch it every time
     * the mouse moves.
     *
     * @property    {HTMLElement}   draggable
     * @private
     */
    var draggable;

    /**
     * Keeps track of whether or not we're currently using the overlay
     * background image to display the current gallery. We do this because we
     * use different methods for fading the overlay in and out. The color fill
     * overlay fades in and out nicely, but the image overlay stutters. By
     * keeping track of the type of overlay in use, we don't have to check again
     * what type of overlay we're using when it's time to get rid of it later.
     *
     * @property    {Boolean}       overlay_img_needed
     * @private
     */
    var overlay_img_needed;

    /**
     * These parameters for simple browser detection. Used in Ext.js.
     *
     * @ignore
     */
    var ua = navigator.userAgent.toLowerCase();
    var isStrict = document.compatMode == 'CSS1Compat',
        isOpera = ua.indexOf("opera") > -1,
        isIE = ua.indexOf('msie') > -1,
        isIE7 = ua.indexOf('msie 7') > -1,
        isBorderBox = isIE && !isStrict,
        isSafari = (/webkit|khtml/).test(ua),
        isSafari3 = isSafari && !!(document.evaluate),
        isGecko = !isSafari && ua.indexOf('gecko') > -1,
        isWindows = (ua.indexOf('windows') != -1 || ua.indexOf('win32') != -1),
        isMac = (ua.indexOf('macintosh') != -1 || ua.indexOf('mac os x') != -1),
        isLinux = (ua.indexOf('linux') != -1);

    /**
     * Do we need to hack the position to make Shadowbox appear fixed? We could
     * hack this using CSS, but let's just get over all the hacks and let IE6
     * users get what they deserve! Down with hacks! Hmm...now that I think
     * about it, I should just flash all kinds of alerts and annoying popups on
     * their screens, and then redirect them to some foreign spyware site that
     * will upload a nasty virus...
     *
     * @property    {Boolean}   absolute_pos
     * @private
     */
    var absolute_pos = isIE && !isIE7;

    /**
     * Contains plugin support information. Each property of this object is a
     * boolean indicating whether that plugin is supported.
     *
     * - fla: Flash player
     * - qt: QuickTime player
     * - wmp: Windows Media player
     * - f4m: Flip4Mac plugin
     *
     * @property    {Object}    plugins
     * @private
     */
    var plugins = null;

    // detect plugin support
    if(navigator.plugins && navigator.plugins.length){
        var detectPlugin = function(plugin_name){
            var detected = false;
            for (var i = 0, len = navigator.plugins.length; i < len; ++i){
                if(navigator.plugins[i].name.indexOf(plugin_name) > -1){
                    detected = true;
                    break;
                }
            }
            return detected;
        };
        var f4m = detectPlugin('Flip4Mac');
        var plugins = {
            fla:    detectPlugin('Shockwave Flash'),
            qt:     detectPlugin('QuickTime'),
            wmp:    !f4m && detectPlugin('Windows Media'), // if it's Flip4Mac, it's not really WMP
            f4m:    f4m
        };
    }else{
        var detectPlugin = function(plugin_name){
            var detected = false;
            try {
                var axo = new ActiveXObject(plugin_name);
                if(axo){
                    detected = true;
                }
            } catch (e) {}
            return detected;
        };
        var plugins = {
            fla:    detectPlugin('ShockwaveFlash.ShockwaveFlash'),
            qt:     detectPlugin('QuickTime.QuickTime'),
            wmp:    detectPlugin('wmplayer.ocx'),
            f4m:    false
        };
    }

    /**
     * Applies all properties of e to o. This function is recursive so that if
     * any properties of e are themselves objects, those objects will be applied
     * to objects with the same key that may exist in o.
     *
     * @param   {Object}    o       The original object
     * @param   {Object}    e       The extension object
     * @return  {Object}            The original object with all properties
     *                              of the extension object applied (deep)
     * @private
     */
    var apply = function(o, e){
        for(var p in e) o[p] = e[p];
        return o;
    };

    /**
     * Determines if the given object is an anchor/area element.
     *
     * @param   {mixed}     el      The object to check
     * @return  {Boolean}           True if the object is a link element
     * @private
     */
    var isLink = function(el){
        return typeof el.tagName == 'string' && (el.tagName.toUpperCase() == 'A' || el.tagName.toUpperCase() == 'AREA');
    };

    /**
     * Gets the height of the viewport in pixels. Note: This function includes
     * scrollbars in Safari 3.
     *
     * @return  {Number}        The height of the viewport
     * @public
     * @static
     */
    SL.getViewportHeight = function(){
        var height = window.innerHeight; // Safari
        var mode = document.compatMode;
        if((mode || isIE) && !isOpera){
            height = isStrict ? document.documentElement.clientHeight : document.body.clientHeight;
        }
        return height;
    };

    /**
     * Gets the width of the viewport in pixels. Note: This function includes
     * scrollbars in Safari 3.
     *
     * @return  {Number}        The width of the viewport
     * @public
     * @static
     */
    SL.getViewportWidth = function(){
        var width = window.innerWidth; // Safari
        var mode = document.compatMode;
        if(mode || isIE){
            width = isStrict ? document.documentElement.clientWidth : document.body.clientWidth;
        }
        return width;
    };

    /**
     * Gets the height of the document (body and its margins) in pixels.
     *
     * @return  {Number}        The height of the document
     * @public
     * @static
     */
    SL.getDocumentHeight = function(){
        var scrollHeight = isStrict ? document.documentElement.scrollHeight : document.body.scrollHeight;
        return Math.max(scrollHeight, SL.getViewportHeight());
    };

    /**
     * Gets the width of the document (body and its margins) in pixels.
     *
     * @return  {Number}        The width of the document
     * @public
     * @static
     */
    SL.getDocumentWidth = function(){
        var scrollWidth = isStrict ? document.documentElement.scrollWidth : document.body.scrollWidth;
        return Math.max(scrollWidth, SL.getViewportWidth());
    };

    /**
     * A utility function used by the fade functions to clear the opacity
     * style setting of the given element. Required in some cases for IE.
     * Based on Ext.Element's clearOpacity.
     *
     * @param   {HTMLElement}   el      The DOM element
     * @return  void
     * @private
     */
    var clearOpacity = function(el){
        if(isIE){
            if(typeof el.style.filter == 'string' && (/alpha/i).test(el.style.filter)){
                el.style.filter = '';
            }
        }else{
            el.style.opacity = '';
            el.style['-moz-opacity'] = '';
            el.style['-khtml-opacity'] = '';
        }
    };

    /**
     * Fades the given element from 0 to the specified opacity.
     *
     * @param   {HTMLElement}   el              The DOM element to fade
     * @param   {Number}        endingOpacity   The final opacity to animate to
     * @param   {Number}        duration        The duration of the animation
     *                                          (in seconds)
     * @param   {Function}      callback        A callback function to call
     *                                          when the animation completes
     * @return  void
     * @private
     */
    var fadeIn = function(el, endingOpacity, duration, callback){
        if(options.animate){
            SL.setStyle(el, 'opacity', 0);
            el.style.visibility = 'visible';
            SL.animate(el, {
                opacity: { to: endingOpacity }
            }, duration, function(){
                if(endingOpacity == 1) clearOpacity(el);
                if(typeof callback == 'function') callback();
            });
        }else{
            if(endingOpacity == 1){
                clearOpacity(el);
            }else{
                SL.setStyle(el, 'opacity', endingOpacity);
            }
            el.style.visibility = 'visible';
            if(typeof callback == 'function') callback();
        }
    };

    /**
     * Fades the given element from its current opacity to 0.
     *
     * @param   {HTMLElement}   el          The DOM element to fade
     * @param   {Number}        duration    The duration of the fade animation
     * @param   {Function}      callback    A callback function to call when
     *                                      the animation completes
     * @return  void
     * @private
     */
    var fadeOut = function(el, duration, callback){
        var cb = function(){
            el.style.visibility = 'hidden';
            clearOpacity(el);
            if(typeof callback == 'function') callback();
        };
        if(options.animate){
            SL.animate(el, {
                opacity: { to: 0 }
            }, duration, cb);
        }else{
            cb();
        }
    };

    /**
     * Appends an HTML fragment to the given element.
     *
     * @param   {String/HTMLElement}    el      The element to append to
     * @param   {String}                html    The HTML fragment to use
     * @return  {HTMLElement}                   The newly appended element
     * @private
     */
    var appendHTML = function(el, html){
        el = SL.get(el);
        if(el.insertAdjacentHTML){
            el.insertAdjacentHTML('BeforeEnd', html);
            return el.lastChild;
        }
        if(el.lastChild){
            var range = el.ownerDocument.createRange();
            range.setStartAfter(el.lastChild);
            var frag = range.createContextualFragment(html);
            el.appendChild(frag);
            return el.lastChild;
        }else{
            el.innerHTML = html;
            return el.lastChild;
        }
    };

    /**
     * Overwrites the HTML of the given element.
     *
     * @param   {String/HTMLElement}    el      The element to overwrite
     * @param   {String}                html    The new HTML to use
     * @return  {HTMLElement}                   The new firstChild element
     * @private
     */
    var overwriteHTML = function(el, html){
        el = SL.get(el);
        el.innerHTML = html;
        return el.firstChild;
    };

    /**
     * Gets either the offsetHeight or the height of the given element plus
     * padding and borders (when offsetHeight is not available). Based on
     * Ext.Element's getComputedHeight.
     *
     * @return  {Number}            The computed height of the element
     * @private
     */
    var getComputedHeight = function(el){
        var h = Math.max(el.offsetHeight, el.clientHeight);
        if(!h){
            h = parseInt(SL.getStyle(el, 'height'), 10) || 0;
            if(!isBorderBox){
                h += parseInt(SL.getStyle(el, 'padding-top'), 10)
                    + parseInt(SL.getStyle(el, 'padding-bottom'), 10)
                    + parseInt(SL.getStyle(el, 'border-top-width'), 10)
                    + parseInt(SL.getStyle(el, 'border-bottom-width'), 10);
            }
        }
        return h;
    };

    /**
     * Gets either the offsetWidth or the width of the given element plus
     * padding and borders (when offsetWidth is not available). Based on
     * Ext.Element's getComputedWidth.
     *
     * @return  {Number}            The computed width of the element
     * @private
     */
    var getComputedWidth = function(el){
        var w = Math.max(el.offsetWidth, el.clientWidth);
        if(!w){
            w = parseInt(SL.getStyle(el, 'width'), 10) || 0;
            if(!isBorderBox){
                w += parseInt(SL.getStyle(el, 'padding-left'), 10)
                    + parseInt(SL.getStyle(el, 'padding-right'), 10)
                    + parseInt(SL.getStyle(el, 'border-left-width'), 10)
                    + parseInt(SL.getStyle(el, 'border-right-width'), 10);
            }
        }
        return w;
    };

    /**
     * Determines the player needed to display the file at the given URL. If
     * the file type is not supported, the return value will be 'unsupported'.
     * If the file type is not supported but the correct player can be
     * determined, the return value will be 'unsupported-*' where * will be the
     * player abbreviation (e.g. 'qt' = QuickTime).
     *
     * @param   {String}        url     The url of the file
     * @return  {String}                The name of the player to use
     * @private
     */
    var getPlayerType = function(url){
        if(RE.img.test(url)) return 'img';
        var match = url.match(RE.domain);
        var this_domain = match ? document.domain == match[1] : false;
        if(url.indexOf('#') > -1 && this_domain) return 'inline';
        var q_index = url.indexOf('?');
        if(q_index > -1) url = url.substring(0, q_index); // strip query string for player detection purposes
        if(RE.swf.test(url)) return plugins.fla ? 'swf' : 'unsupported-swf';
        if(RE.flv.test(url)) return plugins.fla ? 'flv' : 'unsupported-flv';
        if(RE.qt.test(url)) return plugins.qt ? 'qt' : 'unsupported-qt';
        if(RE.wmp.test(url)){
            if(plugins.wmp){
                return 'wmp';
            }else if(plugins.f4m){
                return 'qt';
            }else{
                return isMac ? (plugins.qt ? 'unsupported-f4m' : 'unsupported-qtf4m') : 'unsupported-wmp';
            }
        }else if(RE.qtwmp.test(url)){
            if(plugins.qt){
                return 'qt';
            }else if(plugins.wmp){
                return 'wmp';
            }else{
                return isMac ? 'unsupported-qt' : 'unsupported-qtwmp';
            }
        }else if(!this_domain || RE.iframe.test(url)){
            return 'iframe';
        }
        return 'unsupported';
    };

    /**
     * Handles all clicks on links that have been set up to work with Shadowbox
     * and cancels the default event behavior when appropriate.
     *
     * @param   {Event}         ev          The click event object
     * @return  void
     * @private
     */
    var handleClick = function(ev){
        // get anchor/area element
        var link;
        if(isLink(this)){
            link = this; // jQuery, Prototype, YUI
        }else{
            link = SL.getTarget(ev); // Ext
            while(!isLink(link) && link.parentNode){
                link = link.parentNode;
            }
        }

        Shadowbox.open(link);
        if(current_gallery.length) SL.preventDefault(ev);
    };

    /**
     * Sets up the current gallery for the given object. Modifies the current
     * and current_gallery variables to contain the appropriate information.
     * Also, checks to see if there are any gallery pieces that are not
     * supported by the client's browser/plugins. If there are, they will be
     * handled according to the handleUnsupported option.
     *
     * @param   {Object}    obj         The content to get the gallery for
     * @return  void
     * @private
     */
    var setupGallery = function(obj){
        // create a copy so it doesn't get modified later
        var copy = apply({}, obj);

        // is it part of a gallery?
        if(!obj.gallery){ // single item, no gallery
            current_gallery = [copy];
            current = 0;
        }else{
            current_gallery = []; // clear the current gallery
            var index, ci;
            for(var i = 0, len = cache.length; i < len; ++i){
                ci = cache[i];
                if(ci.gallery){
                    if(ci.content == obj.content
                        && ci.gallery == obj.gallery
                        && ci.title == obj.title){ // compare content, gallery, & title
                            index = current_gallery.length; // key element found
                    }
                    if(ci.gallery == obj.gallery){
                        current_gallery.push(apply({}, ci));
                    }
                }
            }
            // if not found in cache, prepend to front of gallery
            if(index == null){
                current_gallery.unshift(copy);
                index = 0;
            }
            current = index;
        }

        // are any media in the current gallery supported?
        var match, r;
        for(var i = 0, len = current_gallery.length; i < len; ++i){
            r = false;
            if(current_gallery[i].type == 'unsupported'){ // don't support this at all
                r = true;
            }else if(match = RE.unsupported.exec(current_gallery[i].type)){ // handle unsupported elements
                if(options.handleUnsupported == 'link'){
                    current_gallery[i].type = 'html';
                    // generate a link to the appropriate plugin download page(s)
                    var m;
                    switch(match[1]){
                        case 'qtwmp':
                            m = String.format(options.text.errors.either,
                                options.errors.qt.url, options.errors.qt.name,
                                options.errors.wmp.url, options.errors.wmp.name);
                        break;
                        case 'qtf4m':
                            m = String.format(options.text.errors.shared,
                                options.errors.qt.url, options.errors.qt.name,
                                options.errors.f4m.url, options.errors.f4m.name);
                        break;
                        default:
                            if(match[1] == 'swf' || match[1] == 'flv') match[1] = 'fla';
                            m = String.format(options.text.errors.single,
                                options.errors[match[1]].url, options.errors[match[1]].name);
                    }
                    current_gallery[i] = apply(current_gallery[i], {
                        height:     160, // error messages are short so they
                        width:      320, // only need a small box to display properly
                        content:    '<div class="shadowbox_message">' + m + '</div>'
                    });
                }else{
                    r = true;
                }
            }else if(current_gallery[i].type == 'inline'){ // handle inline elements
                // retrieve the innerHTML of the inline element
                var match = RE.inline.exec(current_gallery[i].content);
                if(match){
                    var el;
                    if(el = SL.get(match[1])){
                        current_gallery[i].content = el.innerHTML;
                    }else{
                        throw 'No element found with id ' + match[1];
                    }
                }else{
                    throw 'No element id found for inline content';
                }
            }
            if(r){
                // remove the element from the gallery
                current_gallery.splice(i, 1);
                if(i < current) --current;
                --i;
            }
        }
    };

    /**
     * Hides the title bar and toolbar and populates them with the proper
     * content.
     *
     * @return  void
     * @private
     */
    var buildBars = function(){
        var link = current_gallery[current];
        if(!link) return; // nothing to build

        // build the title
        var title_i = SL.get('shadowbox_title_inner');
        title_i.innerHTML = (link.title) ? link.title : '';
        // empty the toolbar
        var tool_i = SL.get('shadowbox_toolbar_inner');
        tool_i.innerHTML = '';

        // build the nav
        if(options.displayNav){
            tool_i.innerHTML = String.format(options.skin.close, options.text.close);
            if(current_gallery.length > 1){
                if(options.continuous){
                    // show both
                    appendHTML(tool_i, String.format(options.skin.next, options.text.next));
                    appendHTML(tool_i, String.format(options.skin.prev, options.text.prev));
                }else{
                    // not last in the gallery, show the next link
                    if((current_gallery.length - 1) > current){
                        appendHTML(tool_i, String.format(options.skin.next, options.text.next));
                    }
                    // not first in the gallery, show the previous link
                    if(current > 0){
                        appendHTML(tool_i, String.format(options.skin.prev, options.text.prev));
                    }
                }
            }
        }

        // build the counter
        if(current_gallery.length > 1 && options.displayCounter){
            // append the counter div
            var counter = '';
            if(options.counterType == 'skip'){
                for(var i = 0, len = current_gallery.length; i < len; ++i){
                    counter += '<a href="javascript:Shadowbox.change(' + i + ');"';
                    if(i == current){
                        counter += ' class="shadowbox_counter_current"';
                    }
                    counter += '>' + (i + 1) + '</a>';
                }
            }else{
                counter = (current + 1) + ' of ' + current_gallery.length;
            }
            appendHTML(tool_i, String.format(options.skin.counter, counter));
        }
    };

    /**
     * Hides the title and tool bars.
     *
     * @param   {Function}  callback        A function to call on finish
     * @return  void
     * @private
     */
    var hideBars = function(callback){
        var title_m = getComputedHeight(SL.get('shadowbox_title'));
        var tool_m = 0 - getComputedHeight(SL.get('shadowbox_toolbar'));
        var title_i = SL.get('shadowbox_title_inner');
        var tool_i = SL.get('shadowbox_toolbar_inner');

        if(options.animate && callback){
            // animate the transition
            SL.animate(title_i, {
                marginTop: { to: title_m }
            }, 0.2);
            SL.animate(tool_i, {
                marginTop: { to: tool_m }
            }, 0.2, callback);
        }else{
            SL.setStyle(title_i, 'marginTop', title_m + 'px');
            SL.setStyle(tool_i, 'marginTop', tool_m + 'px');
        }
    };

    /**
     * Shows the title and tool bars.
     *
     * @param   {Function}  callback        A callback function to execute after
     *                                      the animation completes
     * @return  void
     * @private
     */
    var showBars = function(callback){
        var title_i = SL.get('shadowbox_title_inner');
        if(options.animate){
            if(title_i.innerHTML != ''){
                SL.animate(title_i, { marginTop: { to: 0 } }, 0.35);
            }
            SL.animate(SL.get('shadowbox_toolbar_inner'), {
                marginTop: { to: 0 }
            }, 0.35, callback);
        }else{
            if(title_i.innerHTML != ''){
                SL.setStyle(title_i, 'margin-top', '0px');
            }
            SL.setStyle(SL.get('shadowbox_toolbar_inner'), 'margin-top', '0px');
            callback();
        }
    };

    /**
     * Resets the class drag variable.
     *
     * @return  void
     * @private
     */
    var resetDrag = function(){
        drag = {
            x:          0,
            y:          0,
            start_x:    null,
            start_y:    null
        };
    };

    /**
     * Toggles the drag function on and off.
     *
     * @param   {Boolean}   on      True to toggle on, false to toggle off
     * @return  void
     * @private
     */
    var toggleDrag = function(on){
        if(on){
            resetDrag();
            // add drag layer to prevent browser dragging of actual image
            var styles = [
                'position:absolute',
                'cursor:' + (isGecko ? '-moz-grab' : 'move')
            ];
            // make drag layer transparent
            styles.push(isIE ? 'background-color:#fff;filter:alpha(opacity=0)' : 'background-color:transparent');
            appendHTML('shadowbox_body_inner', '<div id="shadowbox_drag_layer" style="' + styles.join(';') + '"></div>');
            SL.addEvent(SL.get('shadowbox_drag_layer'), 'mousedown', listenDrag);
        }else{
            var d = SL.get('shadowbox_drag_layer');
            if(d){
                SL.removeEvent(d, 'mousedown', listenDrag);
                SL.remove(d);
            }
        }
    };

    /**
     * Sets up a drag listener on the document. Called when the mouse button is
     * pressed (mousedown).
     *
     * @param   {mixed}     ev      The mousedown event
     * @return  void
     * @private
     */
    var listenDrag = function(ev){
        drag.start_x = ev.clientX;
        drag.start_y = ev.clientY;
        draggable = SL.get('shadowbox_content');
        SL.addEvent(document, 'mousemove', positionDrag);
        SL.addEvent(document, 'mouseup', unlistenDrag);
        if(isGecko) SL.setStyle(SL.get('shadowbox_drag_layer'), 'cursor', '-moz-grabbing');
    };

    /**
     * Removes the drag listener. Called when the mouse button is released
     * (mouseup).
     *
     * @return  void
     * @private
     */
    var unlistenDrag = function(){
        SL.removeEvent(document, 'mousemove', positionDrag);
        SL.removeEvent(document, 'mouseup', unlistenDrag); // clean up
        if(isGecko) SL.setStyle(SL.get('shadowbox_drag_layer'), 'cursor', '-moz-grab');
    };

    /**
     * Positions an oversized image on drag.
     *
     * @param   {mixed}     ev      The drag event
     * @return  void
     * @private
     */
    var positionDrag = function(ev){
        var move_y = ev.clientY - drag.start_y;
        drag.start_y = drag.start_y + move_y;
        drag.y = Math.max(Math.min(0, drag.y + move_y), current_height - optimal_height); // y boundaries
        SL.setStyle(draggable, 'top', drag.y + 'px');
        var move_x = ev.clientX - drag.start_x;
        drag.start_x = drag.start_x + move_x;
        drag.x = Math.max(Math.min(0, drag.x + move_x), current_width - optimal_width); // x boundaries
        SL.setStyle(draggable, 'left', drag.x + 'px');
    };

    /**
     * Loads the Shadowbox with the current piece.
     *
     * @return  void
     * @private
     */
    var loadContent = function(){
        var obj = current_gallery[current];
        if(!obj) return; // invalid

        buildBars();

        switch(obj.type){
            case 'img':
                // preload the image
                preloader = new Image();
                preloader.onload = function(){
                    // images default to image height and width
                    var h = obj.height ? parseInt(obj.height, 10) : preloader.height;
                    var w = obj.width ? parseInt(obj.width, 10) : preloader.width;
                    resizeContent(h, w, function(dims){
                        showBars(function(){
                            setContent({
                                tag:    'img',
                                height: dims.i_height,
                                width:  dims.i_width,
                                src:    obj.content,
                                style:  'position:absolute'
                            });
                            if(dims.enableDrag && options.handleLgImages == 'drag'){
                                // listen for drag
                                toggleDrag(true);
                                SL.setStyle(SL.get('shadowbox_drag_layer'), {
                                    height:     dims.i_height + 'px',
                                    width:      dims.i_width + 'px'
                                });
                            }
                            finishContent();
                        });
                    });

                    preloader.onload = function(){}; // clear onload for IE
                };
                preloader.src = obj.content;
            break;

            case 'swf':
            case 'flv':
            case 'qt':
            case 'wmp':
                var markup = Shadowbox.movieMarkup(obj);
                resizeContent(markup.height, markup.width, function(){
                    showBars(function(){
                        setContent(markup);
                        finishContent();
                    });
                });
            break;

            case 'iframe':
                // iframes default to full viewport height and width
                var h = obj.height ? parseInt(obj.height, 10) : SL.getViewportHeight();
                var w = obj.width ? parseInt(obj.width, 10) : SL.getViewportWidth();
                var content = {
                    tag:            'iframe',
                    name:           'shadowbox_content',
                    height:         '100%',
                    width:          '100%',
                    frameborder:    '0',
                    marginwidth:    '0',
                    marginheight:   '0',
                    scrolling:      'auto'
                };

                resizeContent(h, w, function(dims){
                    showBars(function(){
                        setContent(content);
                        var win = (isIE)
                            ? SL.get('shadowbox_content').contentWindow
                            : window.frames['shadowbox_content'];
                        win.location = obj.content;
                        finishContent();
                    });
                });
            break;

            case 'html':
            case 'inline':
                // HTML content defaults to full viewport height and width
                var h = obj.height ? parseInt(obj.height, 10) : SL.getViewportHeight();
                var w = obj.width ? parseInt(obj.width, 10) : SL.getViewportWidth();
                var content = {
                    tag:    'div',
                    cls:    'html', /* give special class to make scrollable */
                    html:   obj.content
                };
                resizeContent(h, w, function(){
                    showBars(function(){
                        setContent(content);
                        finishContent();
                    });
                });
            break;

            default:
                // should never happen
                throw 'Shadowbox cannot open content of type ' + obj.type;
        }

        // preload neighboring images
        if(current_gallery.length > 0){
            var next = current_gallery[current + 1];
            if(!next){
                next = current_gallery[0];
            }
            if(next.type == 'img'){
                var preload_next = new Image();
                preload_next.src = next.href;
            }

            var prev = current_gallery[current - 1];
            if(!prev){
                prev = current_gallery[current_gallery.length - 1];
            }
            if(prev.type == 'img'){
                var preload_prev = new Image();
                preload_prev.src = prev.href;
            }
        }
    };

    /**
     * Removes old content and sets the new content of the Shadowbox.
     *
     * @param   {Object}        obj     The content to set (appropriate to pass
     *                                  directly to Shadowbox.createHTML())
     * @return  {HTMLElement}           The newly appended element (or null if
     *                                  none is provided)
     * @private
     */
    var setContent = function(obj){
        var id = 'shadowbox_content';
        var content = SL.get(id);
        if(content){
            // remove old content first
            switch(content.tagName.toUpperCase()){
                case 'OBJECT':
                    // if we're in a gallery (i.e. changing and there's a new
                    // object) we want the LAST link object
                    var link = current_gallery[(obj ? current - 1 : current)];
                    if(link.type == 'wmp' && isIE){
                        try{
                            shadowbox_content.controls.stop(); // stop the movie
                            shadowbox_content.URL = 'non-existent.wmv'; // force player refresh
                            window.shadowbox_content = function(){}; // remove from window
                        }catch(e){}
                    }else if(link.type == 'qt' && isSafari){
                        try{
                            document.shadowbox_content.Stop(); // stop QT movie
                        }catch(e){}
                        // stop QT audio stream for movies that have not yet loaded
                        content.innerHTML = '';
                        // console.log(document.shadowbox_content);
                    }
                    setTimeout(function(){ // using setTimeout prevents browser crashes with WMP
                        SL.remove(content);
                    }, 10);
                break;
                case 'IFRAME':
                    SL.remove(content);
                    if(isGecko) delete window.frames[id]; // needed for Firefox
                break;
                default:
                    SL.remove(content);
            }
        }
        if(obj){
            if(!obj.id) obj.id = id;
            return appendHTML('shadowbox_body_inner', Shadowbox.createHTML(obj));
        }
        return null;
    };

    /**
     * This function is used as the callback after the Shadowbox has been
     * positioned, resized, and loaded with content.
     *
     * @return  void
     * @private
     */
    var finishContent = function(){
        var obj = current_gallery[current];
        if(!obj) return; // invalid
        hideLoading(function(){
            listenKeyboard(true);
            // fire onFinish handler
            if(options.onFinish && typeof options.onFinish == 'function'){
                options.onFinish(obj);
            }
        });
    };

    /**
     * Resizes and positions the content box using the given height and width.
     * If the callback parameter is missing, the transition will not be
     * animated. If the callback parameter is present, it will be passed the
     * new calculated dimensions object as its first parameter. Note: the height
     * and width here should represent the optimal height and width of the box.
     *
     * @param   {Function}  callback    A callback function to use when the
     *                                  resize completes
     * @return  void
     * @private
     */
    var resizeContent = function(height, width, callback){
        // update optimal height and width
        optimal_height = height;
        optimal_width = width;
        var resizable = RE.resize.test(current_gallery[current].type);
        var dims = getDimensions(optimal_height, optimal_width, resizable);
        if(callback){
            var cb = function(){ callback(dims); };
            switch(options.animSequence){
                case 'hw':
                    adjustHeight(dims.height, dims.top, true, function(){
                        adjustWidth(dims.width, true, cb);
                    });
                break;
                case 'wh':
                    adjustWidth(dims.width, true, function(){
                        adjustHeight(dims.height, dims.top, true, cb);
                    });
                break;
                default: // sync
                    adjustWidth(dims.width, true);
                    adjustHeight(dims.height, dims.top, true, cb);
            }
        }else{ // window resize
            adjustWidth(dims.width, false);
            adjustHeight(dims.height, dims.top, false);
            // resize content images & flash in 'resize' mode
            if(options.handleLgImages == 'resize' && resizable){
                var content = SL.get('shadowbox_content');
                if(content){ // may be animating, not present
                    content.height = dims.i_height;
                    content.width = dims.i_width;
                }
            }
        }
    };

    /**
     * Calculates the dimensions for Shadowbox, taking into account the borders,
     * margins, and surrounding elements of the shadowbox_body. If the image
     * is still to large for Shadowbox, and options.handleLgImages is 'resize',
     * the resized dimensions will be returned (preserving the original aspect
     * ratio). Otherwise, the originally calculated dimensions will be returned.
     * The returned object will have the following properties:
     *
     * - height: The height to use for shadowbox_body_inner
     * - width: The width to use for shadowbox
     * - i_height: The height to use for resizable content
     * - i_width: The width to use for resizable content
     * - top: The top to use for shadowbox
     * - enableDrag: True if dragging should be enabled (image is oversized)
     *
     * @param   {Number}    o_height    The optimal height
     * @param   {Number}    o_width     The optimal width
     * @param   {Boolean}   resizable   True if the content is able to be
     *                                  resized. Defaults to false.
     * @return  {Object}                The resize dimensions (see above)
     * @private
     */
    var getDimensions = function(o_height, o_width, resizable){
        if(typeof resizable == 'undefined') resizable = false;

        var height = o_height = parseInt(o_height);
        var width = o_width = parseInt(o_width);
        var shadowbox_b = SL.get('shadowbox_body');

        // calculate the max height
        var view_height = SL.getViewportHeight();
        var extra_height = parseInt(SL.getStyle(shadowbox_b, 'border-top-width'), 10)
            + parseInt(SL.getStyle(shadowbox_b, 'border-bottom-width'), 10)
            + parseInt(SL.getStyle(shadowbox_b, 'margin-top'), 10)
            + parseInt(SL.getStyle(shadowbox_b, 'margin-bottom'), 10)
            + getComputedHeight(SL.get('shadowbox_title'))
            + getComputedHeight(SL.get('shadowbox_toolbar'))
            + (2 * options.viewportPadding);
        if((height + extra_height) >= view_height){
            height = view_height - extra_height;
        }

        // calculate the max width
        var view_width = SL.getViewportWidth();
        var extra_body_width = parseInt(SL.getStyle(shadowbox_b, 'border-left-width'), 10)
            + parseInt(SL.getStyle(shadowbox_b, 'border-right-width'), 10)
            + parseInt(SL.getStyle(shadowbox_b, 'margin-left'), 10)
            + parseInt(SL.getStyle(shadowbox_b, 'margin-right'), 10);
        var extra_width = extra_body_width + (2 * options.viewportPadding);
        if((width + extra_width) >= view_width){
            width = view_width - extra_width;
        }

        // handle oversized images & flash
        var enableDrag = false;
        var i_height = o_height;
        var i_width = o_width;
        var handle = options.handleLgImages;
        if(resizable && (handle == 'resize' || handle == 'drag')){
            var change_h = (o_height - height) / o_height;
            var change_w = (o_width - width) / o_width;
            if(handle == 'resize'){
                if(change_h > change_w){
                    width = Math.round((o_width / o_height) * height);
                }else if(change_w > change_h){
                    height = Math.round((o_height / o_width) * width);
                }
                // adjust image height or width accordingly
                i_width = width;
                i_height = height;
            }else{
                // drag on oversized images only
                var link = current_gallery[current];
                if(link) enableDrag = link.type == 'img' && (change_h > 0 || change_w > 0);
            }
        }

        return {
            height: height,
            width: width + extra_body_width,
            i_height: i_height,
            i_width: i_width,
            top: ((view_height - (height + extra_height)) / 2) + options.viewportPadding,
            enableDrag: enableDrag
        };
    };

    /**
     * Centers Shadowbox vertically in the viewport. Needs to be called on
     * scroll in IE6 because it does not support fixed positioning.
     *
     * @return  void
     * @private
     */
    var centerVertically = function(){
        var shadowbox = SL.get('shadowbox');
        var scroll = document.documentElement.scrollTop;
        var s_top = scroll + Math.round((SL.getViewportHeight() - (shadowbox.offsetHeight || 0)) / 2);
        SL.setStyle(shadowbox, 'top', s_top + 'px');
    };

    /**
     * Adjusts the height of shadowbox_body_inner and centers Shadowbox
     * vertically in the viewport.
     *
     * @param   {Number}    height      The height of shadowbox_body_inner
     * @param   {Number}    top         The top of the Shadowbox
     * @param   {Boolean}   animate     True to animate the transition
     * @param   {Function}  callback    A callback to use when the animation completes
     * @return  void
     * @private
     */
    var adjustHeight = function(height, top, animate, callback){
        height = parseInt(height);

        // update current_height
        current_height = height;

        // adjust the height
        var sbi = SL.get('shadowbox_body_inner');
        if(animate && options.animate){
            SL.animate(sbi, {
                height: { to: height }
            }, options.resizeDuration, callback);
        }else{
            SL.setStyle(sbi, 'height', height + 'px');
            if(typeof callback == 'function') callback();
        }

        // manually adjust the top because we're using fixed positioning in IE6
        if(absolute_pos){
            // listen for scroll so we can adjust
            centerVertically();
            SL.addEvent(window, 'scroll', centerVertically);

            // add scroll to top
            top += document.documentElement.scrollTop;
        }

        // adjust the top
        var shadowbox = SL.get('shadowbox');
        if(animate && options.animate){
            SL.animate(shadowbox, {
                top: { to: top }
            }, options.resizeDuration);
        }else{
            SL.setStyle(shadowbox, 'top', top + 'px');
        }
    };

    /**
     * Adjusts the width of shadowbox.
     *
     * @param   {Number}    width       The width to use
     * @param   {Boolean}   animate     True to animate the transition
     * @param   {Function}  callback    A callback to use when the animation completes
     * @return  void
     * @private
     */
    var adjustWidth = function(width, animate, callback){
        width = parseInt(width);

        // update current_width
        current_width = width;

        var shadowbox = SL.get('shadowbox');
        if(animate && options.animate){
            SL.animate(shadowbox, {
                width: { to: width }
            }, options.resizeDuration, callback);
        }else{
            SL.setStyle(shadowbox, 'width', width + 'px');
            if(typeof callback == 'function') callback();
        }
    };

    /**
     * Sets up a listener on the document for keystrokes.
     *
     * @param   {Boolean}   on      True to enable the listner, false to turn
     *                              it off
     * @return  void
     * @private
     */
    var listenKeyboard = function(on){
        if(!options.enableKeys) return;
        if(on){
            document.onkeydown = handleKey;
        }else{
            document.onkeydown = '';
        }
    };

    /**
     * Asserts the given key or code is present in the array of valid keys.
     *
     * @param   {Array}     valid       An array of valid keys and codes
     * @param   {String}    key         The character that was pressed
     * @param   {Number}    code        The key code that was pressed
     * @return  {Boolean}               True if the key is valid
     * @private
     */
    var assertKey = function(valid, key, code){
        return (valid.indexOf(key) != -1 || valid.indexOf(code) != -1);
    };

    /**
     * A listener function that will act on a key pressed.
     *
     * @param   {Event}     e       The event object
     * @return  void
     * @private
     */
    var handleKey = function(e){
        var code = e ? e.which : event.keyCode;
        var key = String.fromCharCode(code).toLowerCase();
        if(assertKey(options.keysClose, key, code)){
            Shadowbox.close();
        }else if(assertKey(options.keysPrev, key, code)){
            Shadowbox.previous();
        }else if(assertKey(options.keysNext, key, code)){
            Shadowbox.next();
        }
    };

    /**
     * Shows and hides elements that are troublesome for modal overlays.
     *
     * @param   {Boolean}   on      True to show the elements, false otherwise
     * @return  void
     * @private
     */
    var toggleTroubleElements = function(on){
        var vis = (on ? 'visible' : 'hidden');
        var selects = document.getElementsByTagName('select');
        for(i = 0, len = selects.length; i < len; ++i){
            selects[i].style.visibility = vis;
        }
        var objects = document.getElementsByTagName('object');
        for(i = 0, len = objects.length; i < len; ++i){
            objects[i].style.visibility = vis;
        }
        var embeds = document.getElementsByTagName('embed');
        for(i = 0, len = embeds.length; i < len; ++i){
            embeds[i].style.visibility = vis;
        }
    };

    /**
     * Fills the Shadowbox with the loading skin.
     *
     * @return  void
     * @private
     */
    var showLoading = function(){
        var loading = SL.get('shadowbox_loading');
        overwriteHTML(loading, String.format(options.skin.loading,
            options.assetURL + options.loadingImage,
            options.text.loading,
            options.text.cancel));
        loading.style.visibility = 'visible';
    };

    /**
     * Hides the Shadowbox loading skin.
     *
     * @param   {Function}  callback        The callback function to call after
     *                                      hiding the loading skin
     * @return  void
     * @private
     */
    var hideLoading = function(callback){
        var t = current_gallery[current].type;
        var anim = (t == 'img' || t == 'html'); // fade on images & html
        var loading = SL.get('shadowbox_loading');
        if(anim){
            fadeOut(loading, 0.35, callback);
        }else{
            loading.style.visibility = 'hidden';
            callback();
        }
    };

    /**
     * Sets the size of the overlay to the size of the document.
     *
     * @return  void
     * @private
     */
    var resizeOverlay = function(){
        var overlay = SL.get('shadowbox_overlay');
        SL.setStyle(overlay, {
            height: '100%',
            width: '100%'
        });
        SL.setStyle(overlay, 'height', SL.getDocumentHeight() + 'px');
        if(!isSafari3){
            // Safari3 includes vertical scrollbar in SL.getDocumentWidth()!
            // Leave overlay width at 100% for now...
            SL.setStyle(overlay, 'width', SL.getDocumentWidth() + 'px');
        }
    };

    /**
     * Used to determine if the pre-made overlay background image is needed
     * instead of using the trasparent background overlay. A pre-made background
     * image is used for all but image pieces in FF Mac because it has problems
     * displaying correctly if the background layer is not 100% opaque. When
     * displaying a gallery, if any piece in the gallery meets these criteria,
     * the pre-made background image will be used.
     *
     * @return  {Boolean}       Whether or not an overlay image is needed
     * @private
     */
    var checkOverlayImgNeeded = function(){
        if(!(isGecko && isMac)) return false;
        for(var i = 0, len = current_gallery.length; i < len; ++i){
            if(!RE.overlay.exec(current_gallery[i].type)) return true;
        }
        return false;
    };

    /**
     * Activates (or deactivates) the Shadowbox overlay. If a callback function
     * is provided, we know we're activating. Otherwise, deactivate the overlay.
     *
     * @param   {Function}  callback    A callback to call after activation
     * @return  void
     * @private
     */
    var toggleOverlay = function(callback){
        var overlay = SL.get('shadowbox_overlay');
        if(overlay_img_needed == null){
            overlay_img_needed = checkOverlayImgNeeded();
        }

        if(callback){
            resizeOverlay(); // size the overlay before showing
            if(overlay_img_needed){
                SL.setStyle(overlay, {
                    visibility:         'visible',
                    backgroundColor:    'transparent',
                    backgroundImage:    'url(' + options.assetURL + options.overlayBgImage + ')',
                    backgroundRepeat:   'repeat',
                    opacity:            1
                });
                callback();
            }else{
                SL.setStyle(overlay, {
                    visibility:         'visible',
                    backgroundColor:    options.overlayColor,
                    backgroundImage:    'none'
                });
                fadeIn(overlay, options.overlayOpacity, options.fadeDuration,
                    callback);
            }
        }else{
            if(overlay_img_needed){
                SL.setStyle(overlay, 'visibility', 'hidden');
            }else{
                fadeOut(overlay, options.fadeDuration);
            }

            // reset for next time
            overlay_img_needed = null;
        }
    };

    /**
     * Initializes the Shadowbox environment. Appends Shadowbox' HTML to the
     * document and sets up listeners on the window and overlay element.
     *
     * @param   {Object}    opts    The default options to use
     * @return  void
     * @public
     * @static
     */
    Shadowbox.init = function(opts){
//        if(initialized) return; // don't initialize twice
        options = apply(options, opts || {});

        // add markup
        appendHTML(document.body, options.skin.main);

        // compile file type regular expressions here for speed
        RE.img = new RegExp('\.(' + options.ext.img.join('|') + ')\s*$', 'i');
        RE.qt = new RegExp('\.(' + options.ext.qt.join('|') + ')\s*$', 'i');
        RE.wmp = new RegExp('\.(' + options.ext.wmp.join('|') + ')\s*$', 'i');
        RE.qtwmp = new RegExp('\.(' + options.ext.qtwmp.join('|') + ')\s*$', 'i');
        RE.iframe = new RegExp('\.(' + options.ext.iframe.join('|') + ')\s*$', 'i');

        // handle window resize events
        var id = null;
        var resize = function(){
            clearInterval(id);
            id = null;
            resizeOverlay();
            resizeContent(optimal_height, optimal_width);
        };
        SL.addEvent(window, 'resize', function(){
            if(activated){
                // use event buffering to prevent jerky window resizing
                if(id){
                    clearInterval(id);
                    id = null;
                }
                if(!id) id = setInterval(resize, 50);
            }
        });

        if(options.listenOverlay){
            // add a listener to the overlay
            SL.addEvent(SL.get('shadowbox_overlay'), 'click', Shadowbox.close);
        }

        // adjust some positioning if needed
        if(absolute_pos){
            // give the container absolute positioning
            SL.setStyle(SL.get('shadowbox_container'), 'position', 'absolute');
            // give shadowbox_body "layout"...whatever that is
            SL.setStyle('shadowbox_body', 'zoom', 1);
            // need to listen to the container element because it covers the top
            // half of the page
            SL.addEvent(SL.get('shadowbox_container'), 'click', function(e){
                var target = SL.getTarget(e);
                if(target.id && target.id == 'shadowbox_container') Shadowbox.close();
            });
        }

        // skip setup, will need to be done manually later
        if(!options.skipSetup) Shadowbox.setup();
        initialized = true;
    };

    /**
     * Sets up listeners on the given links that will trigger Shadowbox. If no
     * links are given, this method will set up every anchor element on the page
     * with the appropriate rel attribute. Note: Because AREA elements do not
     * support the rel attribute, they must be explicitly passed to this method.
     *
     * @param   {Array}     links       An array (or array-like) list of anchor
     *                                  and/or area elements to set up
     * @param   {Object}    opts        Some options to use for the given links
     * @return  void
     * @public
     * @static
     */
    Shadowbox.setup = function(links, opts){
        // get links if none specified
        if(!links){
            var links = [];
            var a = document.getElementsByTagName('a'), rel;
            for(var i = 0, len = a.length; i < len; ++i){
                rel = a[i].getAttribute('rel');
                if(rel && RE.rel.test(rel)) links[links.length] = a[i];
            }
        }else if(!links.length){
            links = [links]; // one link
        }

        var link;
        for(var i = 0, len = links.length; i < len; ++i){
            link = links[i];
            if(typeof link.shadowboxCacheKey == 'undefined'){
                // assign cache key expando
                // use integer primitive to avoid memory leak in IE
                link.shadowboxCacheKey = cache.length;
                SL.addEvent(link, 'click', handleClick); // add listener
            }
            cache[link.shadowboxCacheKey] = this.buildCacheObj(link, opts);
        }
    };

    /**
     * Builds an object from the original link element data to store in cache.
     * These objects contain (most of) the following keys:
     *
     * - el: the link element
     * - title: the linked file title
     * - type: the linked file type
     * - content: the linked file's URL
     * - gallery: the gallery the file belongs to (optional)
     * - height: the height of the linked file (only necessary for movies)
     * - width: the width of the linked file (only necessary for movies)
     * - options: custom options to use (optional)
     *
     * @param   {HTMLElement}   link    The link element to process
     * @return  {Object}                An object representing the link
     * @public
     * @static
     */
    Shadowbox.buildCacheObj = function(link, opts){
        var href = link.href; // don't use getAttribute() here
        var o = {
            el:         link,
            title:      link.getAttribute('title'),
            type:       getPlayerType(href),
            options:    apply({}, opts || {}), // break the reference
            content:    href
        };

        // remove link-level options from top-level options
        var opt, l_opts = ['title', 'type', 'height', 'width', 'gallery'];
        for(var i = 0, len = l_opts.length; i < len; ++i){
            opt = l_opts[i];
            if(typeof o.options[opt] != 'undefined'){
                o[opt] = o.options[opt];
                delete o.options[opt];
            }
        }

        // HTML options always trump JavaScript options, so do these last
        var rel = link.getAttribute('rel');
        if(rel){
            // extract gallery name from shadowbox[name] format
            var match = rel.match(RE.gallery);
            if(match) o.gallery = escape(match[2]);

            // other parameters
            var params = rel.split(';');
            for(var i = 0, len = params.length; i < len; ++i){
                match = params[i].match(RE.param);
                if(match){
                    if(match[1] == 'options'){
                        eval('o.options = apply(o.options, ' + match[2] + ')');
                    }else{
                        o[match[1]] = match[2];
                    }
                }
            }
        }

        return o;
    };

    /**
     * Applies the given set of options to those currently in use. Note: Options
     * will be reset on Shadowbox.open() so this function is only useful after
     * it has already been called (while Shadowbox is open).
     *
     * @param   {Object}    opts        The options to apply
     * @return  void
     * @public
     * @static
     */
    Shadowbox.applyOptions = function(opts){
        if(opts){
            // use apply here to break references
            default_options = apply({}, options); // store default options
            options = apply(options, opts); // apply options
        }
    };

    /**
     * Reverts Shadowbox' options to the last default set in use before
     * Shadowbox.applyOptions() was called.
     *
     * @return  void
     * @public
     * @static
     */
    Shadowbox.revertOptions = function(){
        if(default_options){
            options = default_options; // revert to default options
            default_options = null; // erase for next time
        }
    };

    /**
     * Opens the given object in Shadowbox. This object may be either an
     * anchor/area element, or an object similar to the one created by
     * Shadowbox.buildCacheObj().
     *
     * @param   {mixed}     obj         The object or link element that defines
     *                                  what to display
     * @return  void
     * @public
     * @static
     */
    Shadowbox.open = function(obj, opts){
        if(activated) return; // already open
        activated = true;

        // is it a link?
        if(isLink(obj)){
            if(typeof obj.shadowboxCacheKey == 'undefined' || typeof cache[obj.shadowboxCacheKey] == 'undefined'){
                // link element that hasn't been set up before
                // create an object on-the-fly
                obj = this.buildCacheObj(obj, opts);
            }else{
                // link element that has been set up before, get from cache
                obj = cache[obj.shadowboxCacheKey];
            }
        }

        this.revertOptions();
        if(obj.options || opts){
            // use apply here to break references
            this.applyOptions(apply(apply({}, obj.options || {}), opts || {}));
        }

        // update current & current_gallery
        setupGallery(obj);

        // anything to display?
        if(current_gallery.length){
            // fire onOpen hook
            if(options.onOpen && typeof options.onOpen == 'function'){
                options.onOpen(obj);
            }

            // display:block here helps with correct dimension calculations
            SL.setStyle(SL.get('shadowbox'), 'display', 'block');

            toggleTroubleElements(false);
            var dims = getDimensions(options.initialHeight, options.initialWidth);
            adjustHeight(dims.height, dims.top);
            adjustWidth(dims.width);
            hideBars(false);

            // show the overlay and load the content
            toggleOverlay(function(){
                SL.setStyle(SL.get('shadowbox'), 'visibility', 'visible');
                showLoading();
                loadContent();
            });
        }
    };

    /**
     * Jumps to the piece in the current gallery with index num.
     *
     * @param   {Number}    num     The gallery index to view
     * @return  void
     * @public
     * @static
     */
    Shadowbox.change = function(num){
        if(!current_gallery) return; // no current gallery
        if(!current_gallery[num]){ // index does not exist
            if(!options.continuous){
                return;
            }else{
                num = (num < 0) ? (current_gallery.length - 1) : 0; // loop
            }
        }

        // update current
        current = num;

        // stop listening for drag
        toggleDrag(false);
        // empty the content
        setContent(null);
        // turn this back on when done
        listenKeyboard(false);

        // fire onChange handler
        if(options.onChange && typeof options.onChange == 'function'){
            options.onChange(current_gallery[current]);
        }

        showLoading();
        hideBars(loadContent);
    };

    /**
     * Jumps to the next piece in the gallery.
     *
     * @return  {Boolean}       True if the gallery changed to next item, false
     *                          otherwise
     * @public
     * @static
     */
    Shadowbox.next = function(){
        return this.change(current + 1);
    };

    /**
     * Jumps to the previous piece in the gallery.
     *
     * @return  {Boolean}       True if the gallery changed to previous item,
     *                          false otherwise
     * @public
     * @static
     */
    Shadowbox.previous = function(){
        return this.change(current - 1);
    };

    /**
     * Deactivates Shadowbox.
     *
     * @return  void
     * @public
     * @static
     */
    Shadowbox.close = function(){
        if(!activated) return; // already closed

        // stop listening for keys
        listenKeyboard(false);
        // hide
        SL.setStyle(SL.get('shadowbox'), {
            display: 'none',
            visibility: 'hidden'
        });
        // stop listening for scroll on IE
        if(absolute_pos) SL.removeEvent(window, 'scroll', centerVertically);
        // stop listening for drag
        toggleDrag(false);
        // empty the content
        setContent(null);
        // prevent old image requests from loading
        if(preloader){
            preloader.onload = function(){};
            preloader = null;
        }
        // hide the overlay
        toggleOverlay(false);
        // turn on trouble elements
        toggleTroubleElements(true);

        // fire onClose handler
        if(options.onClose && typeof options.onClose == 'function'){
            options.onClose(current_gallery[current]);
        }

        activated = false;
    };

    /**
     * Clears Shadowbox' cache and removes listeners and expandos from all
     * cached link elements. May be used to completely reset Shadowbox in case
     * links on a page change.
     *
     * @return  void
     * @public
     * @static
     */
    Shadowbox.clearCache = function(){
        for(var i = 0, len = cache.length; i < len; ++i){
            if(cache[i].el){
                SL.removeEvent(cache[i].el, 'click', handleClick);
                delete cache[i].shadowboxCacheKey;
            }
        }
        cache = [];
    };

    /**
     * Generates the markup necessary to embed the movie file with the given
     * link element. This markup will be browser-specific. Useful for generating
     * the media test suite.
     *
     * @param   {HTMLElement}   link        The link to the media file
     * @return  {Object}                    The proper markup to use (see above)
     * @public
     * @static
     */
    Shadowbox.movieMarkup = function(obj){
        // movies default to 300x300 pixels
        var h = obj.height ? parseInt(obj.height, 10) : 300;
        var w = obj.width ? parseInt(obj.width, 10) : 300;

        var autoplay = options.autoplayMovies;
        var controls = options.showMovieControls;
        if(obj.options){
            if(obj.options.autoplayMovies != null){
                autoplay = obj.options.autoplayMovies;
            }
            if(obj.options.showMovieControls != null){
                controls = obj.options.showMovieControls;
            }
        }

        var markup = {
            tag:    'object',
            name:   'shadowbox_content'
        };

        switch(obj.type){
            case 'swf':
                var dims = getDimensions(h, w, true);
                h = dims.height;
                w = dims.width;
                markup.type = 'application/x-shockwave-flash';
                markup.data = obj.content;
                markup.children = [
                    { tag: 'param', name: 'movie', value: obj.content }
                ];
            break;
            case 'flv':
                autoplay = autoplay ? 'true' : 'false';
                var showicons = 'false';
                var a = h/w; // aspect ratio
                if(controls){
                    showicons = 'true';
                    h += 20; // height of JW FLV player controller
                }
                var dims = getDimensions(h, h/a, true); // resize
                h = dims.height;
                w = (h-(controls?20:0))/a; // maintain aspect ratio
                var flashvars = [
                    'file=' + obj.content,
                    'height=' + h,
                    'width=' + w,
                    'autostart=' + autoplay,
                    'displayheight=' + (h - (controls?20:0)),
                    'showicons=' + showicons,
                    'backcolor=0x000000&amp;frontcolor=0xCCCCCC&amp;lightcolor=0x557722'
                ];
                markup.type = 'application/x-shockwave-flash';
                markup.data = options.assetURL + options.flvPlayer;
                markup.children = [
                    { tag: 'param', name: 'movie', value: options.assetURL + options.flvPlayer },
                    { tag: 'param', name: 'flashvars', value: flashvars.join('&amp;') },
                    { tag: 'param', name: 'allowfullscreen', value: 'true' }
                ];
            break;
            case 'qt':
                autoplay = autoplay ? 'true' : 'false';
                if(controls){
                    controls = 'true';
                    h += 16; // height of QuickTime controller
                }else{
                    controls = 'false';
                }
                markup.children = [
                    { tag: 'param', name: 'src', value: obj.content },
                    { tag: 'param', name: 'scale', value: 'aspect' },
                    { tag: 'param', name: 'controller', value: controls },
                    { tag: 'param', name: 'autoplay', value: autoplay }
                ];
                if(isIE){
                    markup.classid = 'clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B';
                    markup.codebase = 'http://www.apple.com/qtactivex/qtplugin.cab#version=6,0,2,0';
                }else{
                    markup.type = 'video/quicktime';
                    markup.data = obj.content;
                }
            break;
            case 'wmp':
                autoplay = autoplay ? 1 : 0;
                markup.children = [
                    { tag: 'param', name: 'autostart', value: autoplay }
                ];
                if(isIE){
                    if(controls){
                        controls = 'full';
                        h += 70; // height of WMP controller in IE
                    }else{
                        controls = 'none';
                    }
                    // markup.type = 'application/x-oleobject';
                    markup.classid = 'clsid:6BF52A52-394A-11d3-B153-00C04F79FAA6';
                    markup.children[markup.children.length] = { tag: 'param', name: 'url', value: obj.content };
                    markup.children[markup.children.length] = { tag: 'param', name: 'uimode', value: controls };
                }else{
                    if(controls){
                        controls = 1;
                        h += 45; // height of WMP controller in non-IE
                    }else{
                        controls = 0;
                    }
                    markup.type = 'video/x-ms-wmv';
                    markup.data = obj.content;
                    markup.children[markup.children.length] = { tag: 'param', name: 'showcontrols', value: controls };
                }
            break;
        }

        markup.height = h; // new height includes controller
        markup.width = w;

        return markup;
    };

    /**
     * Creates an HTML string from an object representing HTML elements. Based
     * on Ext.DomHelper's createHtml.
     *
     * @param   {Object}    obj     The HTML definition object
     * @return  {String}            An HTML string
     * @public
     * @static
     */
    Shadowbox.createHTML = function(obj){
        var html = '<' + obj.tag;
        for(var attr in obj){
            if(attr == 'tag' || attr == 'html' || attr == 'children') continue;
            if(attr == 'cls'){
                html += ' class="' + obj['cls'] + '"';
            }else{
                html += ' ' + attr + '="' + obj[attr] + '"';
            }
        }
        if(RE.empty.test(obj.tag)){
            html += '/>\n';
        }else{
            html += '>\n';
            var cn = obj.children;
            if(cn){
                for(var i = 0, len = cn.length; i < len; ++i){
                    html += this.createHTML(cn[i]);
                }
            }
            if(obj.html) html += obj.html;
            html += '</' + obj.tag + '>\n';
        }
        return html;
    };

    /**
     * Gets an object that lists which plugins are supported by the client. The
     * keys of this object will be:
     *
     * - fla: Adobe Flash Player
     * - qt: QuickTime Player
     * - wmp: Windows Media Player
     * - f4m: Flip4Mac QuickTime Player
     *
     * @return  {Object}        The plugins object
     * @public
     * @static
     */
    Shadowbox.getPlugins = function(){
        return plugins;
    };

    /**
     * Gets the current options object in use.
     *
     * @return  {Object}        The options object
     * @public
     * @static
     */
    Shadowbox.getOptions = function(){
        return options;
    };

    /**
     * Gets the current gallery object.
     *
     * @return  {Object}        The current gallery item
     * @public
     * @static
     */
    Shadowbox.getCurrent = function(){
        return current_gallery[current];
    };

    /**
     * Gets the current version number of Shadowbox.
     *
     * @return  {String}        The current version
     * @public
     * @static
     */
    Shadowbox.getVersion = function(){
        return version;
    };

})();

/**
 * Finds the index of the given object in this array.
 *
 * @param   {mixed}     o   The object to search for
 * @return  {Number}        The index of the given object
 * @public
 */
Array.prototype.indexOf = Array.prototype.indexOf || function(o){
    for(var i = 0, len = this.length; i < len; ++i){
        if(this[i] == o) return i;
    }
    return -1;
};

/**
 * Formats a string with the given parameters. The string for format must have
 * placeholders that correspond to the numerical index of the arguments passed
 * in surrounded by curly braces (e.g. 'Some {0} string {1}').
 *
 * @param   {String}    format      The string to format
 * @param   ...                     The parameters to put inside the string
 * @return  {String}                The string with the specified parameters
 *                                  replaced
 * @public
 * @static
 */
String.format = String.format || function(format){
    var args = Array.prototype.slice.call(arguments, 1);
    return format.replace(/\{(\d+)\}/g, function(m, i){
        return args[i];
    });
};

/* supersleight.js */
var supersleight	= function() {

	var root = false;
	var applyPositioning = true;

	// Path to a transparent GIF image
	var shim			= '/js/x.gif';

	// RegExp to match above GIF image name
	var shim_pattern	= /x\.gif$/i;



	var fnLoadPngs = function() {
		if (root) {
			root = document.getElementById(root);
		}else{
			root = document;
		}
		if (root.all)
		for (var i = root.all.length - 1, obj = null; (obj = root.all[i]); i--) {
			// background pngs
			if (obj.currentStyle.backgroundImage.match(/\.png/i) !== null) {
				bg_fnFixPng(obj);
			}
			// image elements
			if (obj.tagName=='IMG' && obj.src.match(/\.png$/i) !== null){
				el_fnFixPng(obj);
			}
			// apply position to 'active' elements
			if (applyPositioning && (obj.tagName=='A' || obj.tagName=='INPUT') && obj.style.position === ''){
				obj.style.position = 'relative';
			}
		}
	};

	var bg_fnFixPng = function(obj) {
		var mode = 'scale';
		var bg	= obj.currentStyle.backgroundImage;
		var src = bg.substring(5,bg.length-2);
		if (obj.currentStyle.backgroundRepeat == 'no-repeat') {
			mode = 'crop';
		}
		obj.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "', sizingMethod='" + mode + "')";
		obj.style.backgroundImage = 'url('+shim+')';
	};

	var el_fnFixPng = function(img) {
		var src = img.src;
		img.style.width = img.width + "px";
		img.style.height = img.height + "px";
		img.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + src + "', sizingMethod='scale')";
		img.src = shim;
	};

	var addLoadEvent = function(func) {
		var oldonload = window.onload;
		if (typeof window.onload != 'function') {
			window.onload = func;
		} else {
			window.onload = function() {
				if (oldonload) {
					oldonload();
				}
				func();
			};
		}
	};

	return {
		init: function() {
			addLoadEvent(fnLoadPngs);
		},

		limitTo: function(el) {
			root = el;
		},

		run: function() {
			fnLoadPngs();
		}
	};
}();

// limit to part of the page ... pass an ID to limitTo:
supersleight.limitTo('logo');

supersleight.init();
/* crir.js */
/*
	CRIR - Checkbox & Radio Input Replacement
	Author: Chris Erwin (me[at]chriserwin.com)
	www.chriserwin.com/scripts/crir/

	Updated July 27, 2006.
	Jesse Gavin added the AddEvent function to initialize
	the script. He also converted the script to JSON format.
	
	Updated July 30, 2006.
	Added the ability to tab to elements and use the spacebar
	to check the input element. This bit of functionality was
	based on a tip from Adam Burmister.
*/

crir = {
	init: function() {
		arrLabels = document.getElementsByTagName('label');
	
		searchLabels:
		for (var i=0; i<arrLabels.length; i++) {			
			// get the input element based on the for attribute of the label tag
			if (arrLabels[i].getAttributeNode('for') && arrLabels[i].getAttributeNode('for').value != '') {
				labelElementFor = arrLabels[i].getAttributeNode('for').value;				
				inputElement = document.getElementById(labelElementFor);
			}
			else {				
				continue searchLabels;
			}	
							
			if (inputElement != undefined) {
				inputElementClass = inputElement.className;	
			}else{
				continue searchLabels;
			}
		
			// if the input is specified to be hidden intiate it
			if (inputElementClass == 'crirHiddenJS') {
				inputElement.className = 'crirHidden';
				
				inputElementType = inputElement.getAttributeNode('type').value;	
				
				// add the appropriate event listener to the input element
				if (inputElementType == "checkbox") {
					inputElement.onclick = crir.toggleCheckboxLabel;
				}
				else {
					inputElement.onclick = crir.toggleRadioLabel;
				}
				
				// set the initial label state
				if (inputElement.checked) {
					if (inputElementType == 'checkbox') { arrLabels[i].className = 'checkbox_checked'}
					else { arrLabels[i].className = 'radio_checked' }
				}
				else {
					if (inputElementType == 'checkbox') { arrLabels[i].className = 'checkbox_unchecked'}
					else { arrLabels[i].className = 'radio_unchecked' }
				}
			}
			else if (inputElement.nodeName != 'SELECT' && inputElement.nodeName != 'TEXTAREA'  && inputElement.getAttributeNode('type').value == 'radio') { // this so even if a radio is not hidden but belongs to a group of hidden radios it will still work.
				arrLabels[i].onclick = crir.toggleRadioLabel;
				inputElement.onclick = crir.toggleRadioLabel;
			}
		}			
	},	
	
	findLabel: function (inputElementID) {
		arrLabels = document.getElementsByTagName('label');
	
		searchLoop:
		for (var i=0; i<arrLabels.length; i++) {
			if (arrLabels[i].getAttributeNode('for') && arrLabels[i].getAttributeNode('for').value == inputElementID) {				
				return arrLabels[i];
				break searchLoop;				
			}
		}		
	},	
	
	toggleCheckboxLabel: function () {
		labelElement = crir.findLabel(this.getAttributeNode('id').value);
	
		if(labelElement.className == 'checkbox_checked') {
			labelElement.className = "checkbox_unchecked";
		}
		else {
			labelElement.className = "checkbox_checked";
		}
	},	
	
	toggleRadioLabel: function () {			 
		clickedLabelElement = crir.findLabel(this.getAttributeNode('id').value);
		
		clickedInputElement = this;
		clickedInputElementName = clickedInputElement.getAttributeNode('name').value;
		
		arrInputs = document.getElementsByTagName('input');
	
		// uncheck (label class) all radios in the same group
		for (var i=0; i<arrInputs.length; i++) {			
			inputElementType = arrInputs[i].getAttributeNode('type').value;
			if (inputElementType == 'radio') {
				inputElementName = arrInputs[i].getAttributeNode('name').value;
				inputElementClass = arrInputs[i].className;
				// find radio buttons with the same 'name' as the one we've changed and have a class of chkHidden
				// and then set them to unchecked
				if (inputElementName == clickedInputElementName && inputElementClass == 'crirHidden') {				
					inputElementID = arrInputs[i].getAttributeNode('id').value;
					labelElement = crir.findLabel(inputElementID);
					labelElement.className = 'radio_unchecked';
				}
			}
		}
	
		// if the radio clicked is hidden set the label to checked
		if (clickedInputElement.className == 'crirHidden') {
			clickedLabelElement.className = 'radio_checked';
		}
	},
	
	addEvent: function(element, eventType, doFunction, useCapture){
		if (element.addEventListener) 
		{
			element.addEventListener(eventType, doFunction, useCapture);
			return true;
		} else if (element.attachEvent) {
			var r = element.attachEvent('on' + eventType, doFunction);
			return r;
		} else {
			element['on' + eventType] = doFunction;
		}
	}
}

crir.addEvent(window, 'load', crir.init, false);
/* lib.js */

function vota(id){
		new Effect.Fade('file_' + parseInt(id), { duration: 0.4, queue: 'start' });
		new Effect.Appear('message', { duration: 0.4, queue: 'start' });
		new Ajax.Updater('ranking', "/rankings/ranking_one/"+parseInt(id),
		{
			parameters: {},
			insertion: Insertion.Bottom,
			asynchronous:true,
			evalScripts:true,
			onComplete: Shadowbox.init,
			requestHeaders:['X-Update', 'ranking']
		}
	);
	new Effect.Fade('message', { duration: 4, queue: 'end' });
	$('file_' + parseInt(id)).remove();

}