/*  Prototype JavaScript framework, version 1.6.1
 *  (c) 2005-2009 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: '1.6.1',

  Browser: (function(){
    var ua = navigator.userAgent;
    var isOpera = Object.prototype.toString.call(window.opera) == '[object Opera]';
    return {
      IE:             !!window.attachEvent && !isOpera,
      Opera:          isOpera,
      WebKit:         ua.indexOf('AppleWebKit/') > -1,
      Gecko:          ua.indexOf('Gecko') > -1 && ua.indexOf('KHTML') === -1,
      MobileSafari:   /Apple.*Mobile.*Safari/.test(ua)
    }
  })(),

  BrowserFeatures: {
    XPath: !!document.evaluate,
    SelectorsAPI: !!document.querySelector,
    ElementExtensions: (function() {
      var constructor = window.Element || window.HTMLElement;
      return !!(constructor && constructor.prototype);
    })(),
    SpecificElementExtensions: (function() {
      if (typeof window.HTMLDivElement !== 'undefined')
        return true;

      var div = document.createElement('div');
      var form = document.createElement('form');
      var isSupported = false;

      if (div['__proto__'] && (div['__proto__'] !== form['__proto__'])) {
        isSupported = true;
      }

      div = form = null;

      return isSupported;
    })()
  },

  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;


var Abstract = { };


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;
  }
};

/* Based on Alex Arnell's inheritance implementation. */

var Class = (function() {
  function subclass() {};
  function create() {
    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) {
      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;
  }

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

    if (!Object.keys({ toString: true }).length) {
      if (source.toString != Object.prototype.toString)
        properties.push("toString");
      if (source.valueOf != Object.prototype.valueOf)
        properties.push("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 = (function(m) {
          return function() { return ancestor[m].apply(this, arguments); };
        })(property).wrap(method);

        value.valueOf = method.valueOf.bind(method);
        value.toString = method.toString.bind(method);
      }
      this.prototype[property] = value;
    }

    return this;
  }

  return {
    create: create,
    Methods: {
      addMethods: addMethods
    }
  };
})();
(function() {

  var _toString = Object.prototype.toString;

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

  function inspect(object) {
    try {
      if (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;
    }
  }

  function toJSON(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 (isElement(object)) return;

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

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

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

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

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

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

  function clone(object) {
    return extend({ }, object);
  }

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

  function isArray(object) {
    return _toString.call(object) == "[object Array]";
  }


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

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

  function isString(object) {
    return _toString.call(object) == "[object String]";
  }

  function isNumber(object) {
    return _toString.call(object) == "[object Number]";
  }

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

  extend(Object, {
    extend:        extend,
    inspect:       inspect,
    toJSON:        toJSON,
    toQueryString: toQueryString,
    toHTML:        toHTML,
    keys:          keys,
    values:        values,
    clone:         clone,
    isElement:     isElement,
    isArray:       isArray,
    isHash:        isHash,
    isFunction:    isFunction,
    isString:      isString,
    isNumber:      isNumber,
    isUndefined:   isUndefined
  });
})();
Object.extend(Function.prototype, (function() {
  var slice = Array.prototype.slice;

  function update(array, args) {
    var arrayLength = array.length, length = args.length;
    while (length--) array[arrayLength + length] = args[length];
    return array;
  }

  function merge(array, args) {
    array = slice.call(array, 0);
    return update(array, args);
  }

  function argumentNames() {
    var names = this.toString().match(/^[\s\(]*function[^(]*\(([^)]*)\)/)[1]
      .replace(/\/\/.*?[\r\n]|\/\*(?:.|[\r\n])*?\*\//g, '')
      .replace(/\s+/g, '').split(',');
    return names.length == 1 && !names[0] ? [] : names;
  }

  function bind(context) {
    if (arguments.length < 2 && Object.isUndefined(arguments[0])) return this;
    var __method = this, args = slice.call(arguments, 1);
    return function() {
      var a = merge(args, arguments);
      return __method.apply(context, a);
    }
  }

  function bindAsEventListener(context) {
    var __method = this, args = slice.call(arguments, 1);
    return function(event) {
      var a = update([event || window.event], args);
      return __method.apply(context, a);
    }
  }

  function curry() {
    if (!arguments.length) return this;
    var __method = this, args = slice.call(arguments, 0);
    return function() {
      var a = merge(args, arguments);
      return __method.apply(this, a);
    }
  }

  function delay(timeout) {
    var __method = this, args = slice.call(arguments, 1);
    timeout = timeout * 1000
    return window.setTimeout(function() {
      return __method.apply(__method, args);
    }, timeout);
  }

  function defer() {
    var args = update([0.01], arguments);
    return this.delay.apply(this, args);
  }

  function wrap(wrapper) {
    var __method = this;
    return function() {
      var a = update([__method.bind(this)], arguments);
      return wrapper.apply(this, a);
    }
  }

  function methodize() {
    if (this._methodized) return this._methodized;
    var __method = this;
    return this._methodized = function() {
      var a = update([this], arguments);
      return __method.apply(null, a);
    };
  }

  return {
    argumentNames:       argumentNames,
    bind:                bind,
    bindAsEventListener: bindAsEventListener,
    curry:               curry,
    delay:               delay,
    defer:               defer,
    wrap:                wrap,
    methodize:           methodize
  }
})());


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"';
};


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();
        this.currentlyExecuting = false;
      } catch(e) {
        this.currentlyExecuting = false;
        throw e;
      }
    }
  }
});
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, (function() {

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

  function gsub(pattern, replacement) {
    var result = '', source = this, match;
    replacement = prepareReplacement(replacement);

    if (Object.isString(pattern))
      pattern = RegExp.escape(pattern);

    if (!(pattern.length || pattern.source)) {
      replacement = replacement('');
      return replacement + source.split('').join(replacement) + 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;
  }

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

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

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

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

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

  function stripTags() {
    return this.replace(/<\w+(\s+("[^"]*"|'[^']*'|[^>])+)?>|<\/\w+>/gi, '');
  }

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

  function extractScripts() {
    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];
    });
  }

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

  function escapeHTML() {
    return this.replace(/&/g,'&amp;').replace(/</g,'&lt;').replace(/>/g,'&gt;');
  }

  function unescapeHTML() {
    return this.stripTags().replace(/&lt;/g,'<').replace(/&gt;/g,'>').replace(/&amp;/g,'&');
  }


  function toQueryParams(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;
    });
  }

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

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

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

  function camelize() {
    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;
  }

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

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

  function dasherize() {
    return this.replace(/_/g, '-');
  }

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

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

  function unfilterJSON(filter) {
    return this.replace(filter || Prototype.JSONFilter, '$1');
  }

  function isJSON() {
    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);
  }

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

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

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

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

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

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

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

  return {
    gsub:           gsub,
    sub:            sub,
    scan:           scan,
    truncate:       truncate,
    strip:          String.prototype.trim ? String.prototype.trim : strip,
    stripTags:      stripTags,
    stripScripts:   stripScripts,
    extractScripts: extractScripts,
    evalScripts:    evalScripts,
    escapeHTML:     escapeHTML,
    unescapeHTML:   unescapeHTML,
    toQueryParams:  toQueryParams,
    parseQuery:     toQueryParams,
    toArray:        toArray,
    succ:           succ,
    times:          times,
    camelize:       camelize,
    capitalize:     capitalize,
    underscore:     underscore,
    dasherize:      dasherize,
    inspect:        inspect,
    toJSON:         toJSON,
    unfilterJSON:   unfilterJSON,
    isJSON:         isJSON,
    evalJSON:       evalJSON,
    include:        include,
    startsWith:     startsWith,
    endsWith:       endsWith,
    empty:          empty,
    blank:          blank,
    interpolate:    interpolate
  };
})());

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

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

    return this.template.gsub(this.pattern, function(match) {
      if (object == null) return (match[1] + '');

      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].replace(/\\\\]/g, ']') : 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 = (function() {
  function each(iterator, context) {
    var index = 0;
    try {
      this._each(function(value) {
        iterator.call(context, value, index++);
      });
    } catch (e) {
      if (e != $break) throw e;
    }
    return this;
  }

  function eachSlice(number, iterator, context) {
    var index = -number, slices = [], array = this.toArray();
    if (number < 1) return array;
    while ((index += number) < array.length)
      slices.push(array.slice(index, index+number));
    return slices.collect(iterator, context);
  }

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

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

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

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

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

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

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

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

  function include(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;
  }

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

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

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

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

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

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

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

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

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

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

  function zip() {
    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));
    });
  }

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

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









  return {
    each:       each,
    eachSlice:  eachSlice,
    all:        all,
    every:      all,
    any:        any,
    some:       any,
    collect:    collect,
    map:        collect,
    detect:     detect,
    findAll:    findAll,
    select:     findAll,
    filter:     findAll,
    grep:       grep,
    include:    include,
    member:     include,
    inGroupsOf: inGroupsOf,
    inject:     inject,
    invoke:     invoke,
    max:        max,
    min:        min,
    partition:  partition,
    pluck:      pluck,
    reject:     reject,
    sortBy:     sortBy,
    toArray:    toArray,
    entries:    toArray,
    zip:        zip,
    size:       size,
    inspect:    inspect,
    find:       detect
  };
})();
function $A(iterable) {
  if (!iterable) return [];
  if ('toArray' in Object(iterable)) return iterable.toArray();
  var length = iterable.length || 0, results = new Array(length);
  while (length--) results[length] = iterable[length];
  return results;
}

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

Array.from = $A;


(function() {
  var arrayProto = Array.prototype,
      slice = arrayProto.slice,
      _each = arrayProto.forEach; // use native browser JS 1.6 implementation if available

  function each(iterator) {
    for (var i = 0, length = this.length; i < length; i++)
      iterator(this[i]);
  }
  if (!_each) _each = each;

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

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

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

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

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

  function without() {
    var values = slice.call(arguments, 0);
    return this.select(function(value) {
      return !values.include(value);
    });
  }

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

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

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


  function clone() {
    return slice.call(this, 0);
  }

  function size() {
    return this.length;
  }

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

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

  function indexOf(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;
  }

  function lastIndexOf(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;
  }

  function concat() {
    var array = slice.call(this, 0), item;
    for (var i = 0, length = arguments.length; i < length; i++) {
      item = arguments[i];
      if (Object.isArray(item) && !('callee' in item)) {
        for (var j = 0, arrayLength = item.length; j < arrayLength; j++)
          array.push(item[j]);
      } else {
        array.push(item);
      }
    }
    return array;
  }

  Object.extend(arrayProto, Enumerable);

  if (!arrayProto._reverse)
    arrayProto._reverse = arrayProto.reverse;

  Object.extend(arrayProto, {
    _each:     _each,
    clear:     clear,
    first:     first,
    last:      last,
    compact:   compact,
    flatten:   flatten,
    without:   without,
    reverse:   reverse,
    uniq:      uniq,
    intersect: intersect,
    clone:     clone,
    toArray:   clone,
    size:      size,
    inspect:   inspect,
    toJSON:    toJSON
  });

  var CONCAT_ARGUMENTS_BUGGY = (function() {
    return [].concat(arguments)[0][0] !== 1;
  })(1,2)

  if (CONCAT_ARGUMENTS_BUGGY) arrayProto.concat = concat;

  if (!arrayProto.indexOf) arrayProto.indexOf = indexOf;
  if (!arrayProto.lastIndexOf) arrayProto.lastIndexOf = lastIndexOf;
})();
function $H(object) {
  return new Hash(object);
};

var Hash = Class.create(Enumerable, (function() {
  function initialize(object) {
    this._object = Object.isHash(object) ? object.toObject() : Object.clone(object);
  }

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

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

  function get(key) {
    if (this._object[key] !== Object.prototype[key])
      return this._object[key];
  }

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

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

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

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

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

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

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

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

  function toQueryString() {
    return this.inject([], function(results, pair) {
      var key = encodeURIComponent(pair.key), values = pair.value;

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

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

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

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

  return {
    initialize:             initialize,
    _each:                  _each,
    set:                    set,
    get:                    get,
    unset:                  unset,
    toObject:               toObject,
    toTemplateReplacements: toObject,
    keys:                   keys,
    values:                 values,
    index:                  index,
    merge:                  merge,
    update:                 update,
    toQueryString:          toQueryString,
    inspect:                inspect,
    toJSON:                 toJSON,
    clone:                  clone
  };
})());

Hash.from = $H;
Object.extend(Number.prototype, (function() {
  function toColorPart() {
    return this.toPaddedString(2, 16);
  }

  function succ() {
    return this + 1;
  }

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

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

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

  function abs() {
    return Math.abs(this);
  }

  function round() {
    return Math.round(this);
  }

  function ceil() {
    return Math.ceil(this);
  }

  function floor() {
    return Math.floor(this);
  }

  return {
    toColorPart:    toColorPart,
    succ:           succ,
    times:          times,
    toPaddedString: toPaddedString,
    toJSON:         toJSON,
    abs:            abs,
    round:          round,
    ceil:           ceil,
    floor:          floor
  };
})());

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

var ObjectRange = Class.create(Enumerable, (function() {
  function initialize(start, end, exclusive) {
    this.start = start;
    this.end = end;
    this.exclusive = exclusive;
  }

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

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

  return {
    initialize: initialize,
    _each:      _each,
    include:    include
  };
})());



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)) {
      params['_method'] = this.method;
      this.method = 'post';
    }

    this.parameters = params;

    if (params = Object.toQueryString(params)) {
      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';
    }

    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') {
      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) {
  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(global) {

  var SETATTRIBUTE_IGNORES_NAME = (function(){
    var elForm = document.createElement("form");
    var elInput = document.createElement("input");
    var root = document.documentElement;
    elInput.setAttribute("name", "test");
    elForm.appendChild(elInput);
    root.appendChild(elForm);
    var isBuggy = elForm.elements
      ? (typeof elForm.elements.test == "undefined")
      : null;
    root.removeChild(elForm);
    elForm = elInput = null;
    return isBuggy;
  })();

  var element = global.Element;
  global.Element = function(tagName, attributes) {
    attributes = attributes || { };
    tagName = tagName.toLowerCase();
    var cache = Element.cache;
    if (SETATTRIBUTE_IGNORES_NAME && 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(global.Element, element || { });
  if (element) global.Element.prototype = element.prototype;
})(this);

Element.cache = { };
Element.idCounter = 1;

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 = $(element);
    element.style.display = 'none';
    return element;
  },

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

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

  update: (function(){

    var SELECT_ELEMENT_INNERHTML_BUGGY = (function(){
      var el = document.createElement("select"),
          isBuggy = true;
      el.innerHTML = "<option value=\"test\">test</option>";
      if (el.options && el.options[0]) {
        isBuggy = el.options[0].nodeName.toUpperCase() !== "OPTION";
      }
      el = null;
      return isBuggy;
    })();

    var TABLE_ELEMENT_INNERHTML_BUGGY = (function(){
      try {
        var el = document.createElement("table");
        if (el && el.tBodies) {
          el.innerHTML = "<tbody><tr><td>test</td></tr></tbody>";
          var isBuggy = typeof el.tBodies[0] == "undefined";
          el = null;
          return isBuggy;
        }
      } catch (e) {
        return true;
      }
    })();

    var SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING = (function () {
      var s = document.createElement("script"),
          isBuggy = false;
      try {
        s.appendChild(document.createTextNode(""));
        isBuggy = !s.firstChild ||
          s.firstChild && s.firstChild.nodeType !== 3;
      } catch (e) {
        isBuggy = true;
      }
      s = null;
      return isBuggy;
    })();

    function update(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 === 'SCRIPT' && SCRIPT_ELEMENT_REJECTS_TEXTNODE_APPENDING) {
        element.text = content;
        return element;
      }

      if (SELECT_ELEMENT_INNERHTML_BUGGY || TABLE_ELEMENT_INNERHTML_BUGGY) {
        if (tagName in Element._insertionTranslations.tags) {
          while (element.firstChild) {
            element.removeChild(element.firstChild);
          }
          Element._getContentFromAnonymousElement(tagName, content.stripScripts())
            .each(function(node) {
              element.appendChild(node)
            });
        }
        else {
          element.innerHTML = content.stripScripts();
        }
      }
      else {
        element.innerHTML = content.stripScripts();
      }

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

    return update;
  })(),

  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(element, 'parentNode');
  },

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

  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(element, 'previousSibling');
  },

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

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

  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(element);
    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(element);
    return Object.isNumber(expression) ? Element.descendants(element)[expression] :
      Element.select(element, expression)[index || 0];
  },

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


  select: function(element) {
    var args = Array.prototype.slice.call(arguments, 1);
    return Selector.findChildElements(element, args);
  },

  adjacent: function(element) {
    var args = Array.prototype.slice.call(arguments, 1);
    return Selector.findChildElements(element.parentNode, args).without(element);
  },

  identify: function(element) {
    element = $(element);
    var id = Element.readAttribute(element, 'id');
    if (id) return id;
    do { id = 'anonymous_element_' + Element.idCounter++ } while ($(id));
    Element.writeAttribute(element, '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(element).height;
  },

  getWidth: function(element) {
    return Element.getDimensions(element).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(element, 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(element, className) ?
      'removeClassName' : 'addClassName'](element, className);
  },

  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);

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

    if (ancestor.contains)
      return ancestor.contains(element) && ancestor !== element;

    while (element = element.parentNode)
      if (element == ancestor) return true;

    return false;
  },

  scrollTo: function(element) {
    element = $(element);
    var pos = Element.cumulativeOffset(element);
    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 || value == 'auto') {
      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(element, 'display');
    if (display != 'none' && display != null) // Safari bug
      return {width: element.offsetWidth, height: element.offsetHeight};

    var els = element.style;
    var originalVisibility = els.visibility;
    var originalPosition = els.position;
    var originalDisplay = els.display;
    els.visibility = 'hidden';
    if (originalPosition != 'fixed') // Switching fixed to absolute causes issues in Safari
      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';
      if (Prototype.Browser.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.toUpperCase() == '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(element, 'position') == 'absolute') return element;

    var offsets = Element.positionedOffset(element);
    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(element, 'position') == 'relative') return element;

    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;

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

    } while (element = element.offsetParent);

    element = forElement;
    do {
      if (!Prototype.Browser.Opera || (element.tagName && (element.tagName.toUpperCase() == '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] || { });

    source = $(source);
    var p = Element.viewportOffset(source);

    element = $(element);
    var delta = [0, 0];
    var parent = null;
    if (Element.getStyle(element, 'position') == 'absolute') {
      parent = Element.getOffsetParent(element);
      delta = Element.viewportOffset(parent);
    }

    if (parent == document.body) {
      delta[0] -= document.body.offsetLeft;
      delta[1] -= document.body.offsetTop;
    }

    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;
  }
};

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':
          if (!Element.visible(element)) return null;

          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) {
  Element.Methods.getOffsetParent = Element.Methods.getOffsetParent.wrap(
    function(proceed, element) {
      element = $(element);
      try { element.offsetParent }
      catch(e) { return $(document.body) }
      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);
        try { element.offsetParent }
        catch(e) { return Element._returnOffset(0,0) }
        var position = element.getStyle('position');
        if (position !== 'static') return proceed(element);
        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.cumulativeOffset = Element.Methods.cumulativeOffset.wrap(
    function(proceed, element) {
      try { element.offsetParent }
      catch(e) { return Element._returnOffset(0,0) }
      return proceed(element);
    }
  );

  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 = (function(){

    var classProp = 'className';
    var forProp = 'for';

    var el = document.createElement('div');

    el.setAttribute(classProp, 'x');

    if (el.className !== 'x') {
      el.setAttribute('class', 'x');
      if (el.className === 'x') {
        classProp = 'class';
      }
    }
    el = null;

    el = document.createElement('label');
    el.setAttribute(forProp, 'x');
    if (el.htmlFor !== 'x') {
      el.setAttribute('htmlFor', 'x');
      if (el.htmlFor === 'x') {
        forProp = 'htmlFor';
      }
    }
    el = null;

    return {
      read: {
        names: {
          'class':      classProp,
          'className':  classProp,
          'for':        forProp,
          'htmlFor':    forProp
        },
        values: {
          _getAttr: function(element, attribute) {
            return element.getAttribute(attribute);
          },
          _getAttr2: function(element, attribute) {
            return element.getAttribute(attribute, 2);
          },
          _getAttrNode: function(element, attribute) {
            var node = element.getAttributeNode(attribute);
            return node ? node.value : "";
          },
          _getEv: (function(){

            var el = document.createElement('div');
            el.onclick = Prototype.emptyFunction;
            var value = el.getAttribute('onclick');
            var f;

            if (String(value).indexOf('{') > -1) {
              f = function(element, attribute) {
                attribute = element.getAttribute(attribute);
                if (!attribute) return null;
                attribute = attribute.toString();
                attribute = attribute.split('{')[1];
                attribute = attribute.split('}')[0];
                return attribute.strip();
              };
            }
            else if (value === '') {
              f = function(element, attribute) {
                attribute = element.getAttribute(attribute);
                if (!attribute) return null;
                return attribute.strip();
              };
            }
            el = null;
            return f;
          })(),
          _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 frameBorder').each(function(attr) {
    Element._attributeTranslations.write.names[attr.toLowerCase()] = attr;
    Element._attributeTranslations.has[attr.toLowerCase()] = attr;
  });

  (function(v) {
    Object.extend(v, {
      href:        v._getAttr2,
      src:         v._getAttr2,
      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);

  if (Prototype.BrowserFeatures.ElementExtensions) {
    (function() {
      function _descendants(element) {
        var nodes = element.getElementsByTagName('*'), results = [];
        for (var i = 0, node; node = nodes[i]; i++)
          if (node.tagName !== "!") // Filter out comment nodes.
            results.push(node);
        return results;
      }

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

}

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

    return element;
  };

  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 ('outerHTML' in document.documentElement) {
  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() {
  var tags = Element._insertionTranslations.tags;
  Object.extend(tags, {
    THEAD: tags.TBODY,
    TFOOT: tags.TBODY,
    TH:    tags.TD
  });
})();

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);

(function(div) {

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

  div = null;

})(document.createElement('div'))

Element.extend = (function() {

  function checkDeficiency(tagName) {
    if (typeof window.Element != 'undefined') {
      var proto = window.Element.prototype;
      if (proto) {
        var id = '_' + (Math.random()+'').slice(2);
        var el = document.createElement(tagName);
        proto[id] = 'x';
        var isBuggy = (el[id] !== 'x');
        delete proto[id];
        el = null;
        return isBuggy;
      }
    }
    return false;
  }

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

  var HTMLOBJECTELEMENT_PROTOTYPE_BUGGY = checkDeficiency('object');

  if (Prototype.BrowserFeatures.SpecificElementExtensions) {
    if (HTMLOBJECTELEMENT_PROTOTYPE_BUGGY) {
      return function(element) {
        if (element && typeof element._extendedByPrototype == 'undefined') {
          var t = element.tagName;
          if (t && (/^(?:object|applet|embed)$/i.test(t))) {
            extendElementWith(element, Element.Methods);
            extendElementWith(element, Element.Methods.Simulated);
            extendElementWith(element, Element.Methods.ByTag[t.toUpperCase()]);
          }
        }
        return element;
      }
    }
    return Prototype.K;
  }

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

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

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

    if (ByTag[tagName]) Object.extend(methods, ByTag[tagName]);

    extendElementWith(element, methods);

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

  }, {
    refresh: function() {
      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];

    var element = document.createElement(tagName);
    var proto = element['__proto__'] || element.constructor.prototype;
    element = null;
    return proto;
  }

  var elementPrototype = window.HTMLElement ? HTMLElement.prototype :
   Element.prototype;

  if (F.ElementExtensions) {
    copy(Element.Methods, elementPrototype);
    copy(Element.Methods.Simulated, elementPrototype, 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() {
    return { width: this.getWidth(), height: this.getHeight() };
  },

  getScrollOffsets: function() {
    return Element._returnOffset(
      window.pageXOffset || document.documentElement.scrollLeft || document.body.scrollLeft,
      window.pageYOffset || document.documentElement.scrollTop  || document.body.scrollTop);
  }
};

(function(viewport) {
  var B = Prototype.Browser, doc = document, element, property = {};

  function getRootElement() {
    if (B.WebKit && !doc.evaluate)
      return document;

    if (B.Opera && window.parseFloat(window.opera.version()) < 9.5)
      return document.body;

    return document.documentElement;
  }

  function define(D) {
    if (!element) element = getRootElement();

    property[D] = 'client' + D;

    viewport['get' + D] = function() { return element[property[D]] };
    return viewport['get' + D]();
  }

  viewport.getWidth  = define.curry('Width');

  viewport.getHeight = define.curry('Height');
})(document.viewport);


Element.Storage = {
  UID: 1
};

Element.addMethods({
  getStorage: function(element) {
    if (!(element = $(element))) return;

    var uid;
    if (element === window) {
      uid = 0;
    } else {
      if (typeof element._prototypeUID === "undefined")
        element._prototypeUID = [Element.Storage.UID++];
      uid = element._prototypeUID[0];
    }

    if (!Element.Storage[uid])
      Element.Storage[uid] = $H();

    return Element.Storage[uid];
  },

  store: function(element, key, value) {
    if (!(element = $(element))) return;

    if (arguments.length === 2) {
      Element.getStorage(element).update(key);
    } else {
      Element.getStorage(element).set(key, value);
    }

    return element;
  },

  retrieve: function(element, key, defaultValue) {
    if (!(element = $(element))) return;
    var hash = Element.getStorage(element), value = hash.get(key);

    if (Object.isUndefined(value)) {
      hash.set(key, defaultValue);
      value = defaultValue;
    }

    return value;
  },

  clone: function(element, deep) {
    if (!(element = $(element))) return;
    var clone = element.cloneNode(deep);
    clone._prototypeUID = void 0;
    if (deep) {
      var descendants = Element.select(clone, '*'),
          i = descendants.length;
      while (i--) {
        descendants[i]._prototypeUID = void 0;
      }
    }
    return Element.extend(clone);
  }
});
/* 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();

    if (this.shouldUseSelectorsAPI()) {
      this.mode = 'selectorsAPI';
    } else if (this.shouldUseXPath()) {
      this.mode = 'xpath';
      this.compileXPathMatcher();
    } else {
      this.mode = "normal";
      this.compileMatcher();
    }

  },

  shouldUseXPath: (function() {

    var IS_DESCENDANT_SELECTOR_BUGGY = (function(){
      var isBuggy = false;
      if (document.evaluate && window.XPathResult) {
        var el = document.createElement('div');
        el.innerHTML = '<ul><li></li></ul><div><ul><li></li></ul></div>';

        var xpath = ".//*[local-name()='ul' or local-name()='UL']" +
          "//*[local-name()='li' or local-name()='LI']";

        var result = document.evaluate(xpath, el, null,
          XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);

        isBuggy = (result.snapshotLength !== 2);
        el = null;
      }
      return isBuggy;
    })();

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

      var e = this.expression;

      if (Prototype.Browser.WebKit &&
       (e.include("-of-type") || e.include(":empty")))
        return false;

      if ((/(\[[\w-]*?:|:checked)/).test(e))
        return false;

      if (IS_DESCENDANT_SELECTOR_BUGGY) return false;

      return true;
    }

  })(),

  shouldUseSelectorsAPI: function() {
    if (!Prototype.BrowserFeatures.SelectorsAPI) return false;

    if (Selector.CASE_INSENSITIVE_CLASS_NAMES) return false;

    if (!Selector._div) Selector._div = new Element('div');

    try {
      Selector._div.querySelector(this.expression);
    } catch(e) {
      return false;
    }

    return true;
  },

  compileMatcher: function() {
    var e = this.expression, ps = Selector.patterns, h = Selector.handlers,
        c = Selector.criteria, le, p, m, len = ps.length, name;

    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 = 0; i<len; i++) {
        p = ps[i].re;
        name = ps[i].name;
        if (m = e.match(p)) {
          this.matcher.push(Object.isFunction(c[name]) ? c[name](m) :
            new Template(c[name]).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, len = ps.length, name;

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

    this.matcher = ['.//*'];
    while (e && le != e && (/\S/).test(e)) {
      le = e;
      for (var i = 0; i<len; i++) {
        name = ps[i].name;
        if (m = e.match(ps[i].re)) {
          this.matcher.push(Object.isFunction(x[name]) ? x[name](m) :
            new Template(x[name]).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;
    var e = this.expression, results;

    switch (this.mode) {
      case 'selectorsAPI':
        if (root !== document) {
          var oldId = root.id, id = $(root).identify();
          id = id.replace(/([\.:])/g, "\\$1");
          e = "#" + id + " " + e;
        }

        results = $A(root.querySelectorAll(e)).map(Element.extend);
        root.id = oldId;

        return results;
      case 'xpath':
        return document._getElementsByXPath(this.xpath, root);
      default:
       return this.matcher(root);
    }
  },

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

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

    while (e && le !== e && (/\S/).test(e)) {
      le = e;
      for (var i = 0; i<len; i++) {
        p = ps[i].re;
        name = ps[i].name;
        if (m = e.match(p)) {
          if (as[name]) {
            this.tokens.push([name, Object.clone(m)]);
            e = e.replace(m[0], '');
          } else {
            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() + ">";
  }
});

if (Prototype.BrowserFeatures.SelectorsAPI &&
 document.compatMode === 'BackCompat') {
  Selector.CASE_INSENSITIVE_CLASS_NAMES = (function(){
    var div = document.createElement('div'),
     span = document.createElement('span');

    div.id = "prototype_test_id";
    span.className = 'Test';
    div.appendChild(span);
    var isIgnored = (div.querySelector('#prototype_test_id .test') !== null);
    div = span = null;
    return isIgnored;
  })();
}

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)]",
      'checked':     "[@checked]",
      'disabled':    "[(@disabled) and (@type!='hidden')]",
      'enabled':     "[not(@disabled) and (@type!='hidden')]",
      'not': function(m) {
        var e = m[6], p = Selector.patterns,
            x = Selector.xpath, le, v, len = p.length, name;

        var exclusion = [];
        while (e && le != e && (/\S/).test(e)) {
          le = e;
          for (var i = 0; i<len; i++) {
            name = p[i].name
            if (m = e.match(p[i].re)) {
              v = Object.isFunction(x[name]) ? x[name](m) : new Template(x[name]).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: [
    { name: 'laterSibling', re: /^\s*~\s*/ },
    { name: 'child',        re: /^\s*>\s*/ },
    { name: 'adjacent',     re: /^\s*\+\s*/ },
    { name: 'descendant',   re: /^\s/ },

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

  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: {
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        a.push(node);
      return a;
    },

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

    unmark: (function(){

      var PROPERTIES_ATTRIBUTES_MAP = (function(){
        var el = document.createElement('div'),
            isBuggy = false,
            propName = '_countedByPrototype',
            value = 'x'
        el[propName] = value;
        isBuggy = (el.getAttribute(propName) === value);
        el = null;
        return isBuggy;
      })();

      return PROPERTIES_ATTRIBUTES_MAP ?
        function(nodes) {
          for (var i = 0, node; node = nodes[i]; i++)
            node.removeAttribute('_countedByPrototype');
          return nodes;
        } :
        function(nodes) {
          for (var i = 0, node; node = nodes[i]; i++)
            node._countedByPrototype = void 0;
          return nodes;
        }
    })(),

    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++;
      }
    },

    unique: function(nodes) {
      if (nodes.length == 0) return nodes;
      var results = [], n;
      for (var i = 0, l = nodes.length; i < l; i++)
        if (typeof (n = nodes[i])._countedByPrototype == 'undefined') {
          n._countedByPrototype = Prototype.emptyFunction;
          results.push(Element.extend(n));
        }
      return Selector.handlers.unmark(results);
    },

    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;
    },

    tagName: function(nodes, root, tagName, combinator) {
      var uTagName = tagName.toUpperCase();
      var results = [], h = Selector.handlers;
      if (nodes) {
        if (combinator) {
          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 (root == document) {
        if (!targetNode) return [];
        if (!nodes) return [targetNode];
      } else {
        if (!root.sourceIndex || root.sourceIndex < 1) {
          var nodes = root.getElementsByTagName('*');
          for (var j = 0, node; node = nodes[j]; j++) {
            if (node.id === id) return [node];
          }
        }
      }

      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);
    },

    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;
      });
    },

    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++) {
        if (node.tagName == '!' || node.firstChild) 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 && (!node.type || node.type !== 'hidden'))
          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 == v || nv && nv.startsWith(v); },
    '$=': function(nv, v) { return nv == v || nv && nv.endsWith(v); },
    '*=': function(nv, v) { return nv == v || nv && 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, {
    concat: function(a, b) {
      for (var i = 0, node; node = b[i]; i++)
        if (node.tagName !== "!") a.push(node);
      return a;
    }
  });
}

function $$() {
  return Selector.findChildElements(document, $A(arguments));
}

var Form = {
  reset: function(form) {
    form = $(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 != 'file' && (element.type != 'submit' || (!submitted &&
            submit !== false && (!submit || key == submit) && (submitted = true)))) {
          if (key in result) {
            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) {
    var elements = $(form).getElementsByTagName('*'),
        element,
        arr = [ ],
        serializers = Form.Element.Serializers;
    for (var i = 0; element = elements[i]; i++) {
      arr.push(element);
    }
    return arr.inject([], function(elements, child) {
      if (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)$/i.test(element.tagName);
    });
  },

  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 = $(element);
    try {
      element.focus();
      if (element.select && (element.tagName.toLowerCase() != 'input' ||
          !(/^(?:button|reset|submit)$/i.test(element.type))))
        element.select();
    } catch (e) { }
    return element;
  },

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

  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) {
    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);
  }
});
(function() {

  var 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: {}
  };

  var docEl = document.documentElement;
  var MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED = 'onmouseenter' in docEl
    && 'onmouseleave' in docEl;

  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);
    };
  }

  function isLeftClick(event)   { return _isButton(event, 0) }

  function isMiddleClick(event) { return _isButton(event, 1) }

  function isRightClick(event)  { return _isButton(event, 2) }

  function element(event) {
    event = Event.extend(event);

    var node = event.target, type = event.type,
     currentTarget = event.currentTarget;

    if (currentTarget && currentTarget.tagName) {
      if (type === 'load' || type === 'error' ||
        (type === 'click' && currentTarget.tagName.toLowerCase() === 'input'
          && currentTarget.type === 'radio'))
            node = currentTarget;
    }

    if (node.nodeType == Node.TEXT_NODE)
      node = node.parentNode;

    return Element.extend(node);
  }

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

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

  function pointerX(event) {
    var docElement = document.documentElement,
     body = document.body || { scrollLeft: 0 };

    return event.pageX || (event.clientX +
      (docElement.scrollLeft || body.scrollLeft) -
      (docElement.clientLeft || 0));
  }

  function pointerY(event) {
    var docElement = document.documentElement,
     body = document.body || { scrollTop: 0 };

    return  event.pageY || (event.clientY +
       (docElement.scrollTop || body.scrollTop) -
       (docElement.clientTop || 0));
  }


  function stop(event) {
    Event.extend(event);
    event.preventDefault();
    event.stopPropagation();

    event.stopped = true;
  }

  Event.Methods = {
    isLeftClick: isLeftClick,
    isMiddleClick: isMiddleClick,
    isRightClick: isRightClick,

    element: element,
    findElement: findElement,

    pointer: pointer,
    pointerX: pointerX,
    pointerY: pointerY,

    stop: stop
  };


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

  if (Prototype.Browser.IE) {
    function _relatedTarget(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);
    }

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

    Event.extend = function(event, element) {
      if (!event) return false;
      if (event._extendedByPrototype) return event;

      event._extendedByPrototype = Prototype.emptyFunction;
      var pointer = Event.pointer(event);

      Object.extend(event, {
        target: event.srcElement || element,
        relatedTarget: _relatedTarget(event),
        pageX:  pointer.x,
        pageY:  pointer.y
      });

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

  function _createResponder(element, eventName, handler) {
    var registry = Element.retrieve(element, 'prototype_event_registry');

    if (Object.isUndefined(registry)) {
      CACHE.push(element);
      registry = Element.retrieve(element, 'prototype_event_registry', $H());
    }

    var respondersForEvent = registry.get(eventName);
    if (Object.isUndefined(respondersForEvent)) {
      respondersForEvent = [];
      registry.set(eventName, respondersForEvent);
    }

    if (respondersForEvent.pluck('handler').include(handler)) return false;

    var responder;
    if (eventName.include(":")) {
      responder = function(event) {
        if (Object.isUndefined(event.eventName))
          return false;

        if (event.eventName !== eventName)
          return false;

        Event.extend(event, element);
        handler.call(element, event);
      };
    } else {
      if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED &&
       (eventName === "mouseenter" || eventName === "mouseleave")) {
        if (eventName === "mouseenter" || eventName === "mouseleave") {
          responder = function(event) {
            Event.extend(event, element);

            var parent = event.relatedTarget;
            while (parent && parent !== element) {
              try { parent = parent.parentNode; }
              catch(e) { parent = element; }
            }

            if (parent === element) return;

            handler.call(element, event);
          };
        }
      } else {
        responder = function(event) {
          Event.extend(event, element);
          handler.call(element, event);
        };
      }
    }

    responder.handler = handler;
    respondersForEvent.push(responder);
    return responder;
  }

  function _destroyCache() {
    for (var i = 0, length = CACHE.length; i < length; i++) {
      Event.stopObserving(CACHE[i]);
      CACHE[i] = null;
    }
  }

  var CACHE = [];

  if (Prototype.Browser.IE)
    window.attachEvent('onunload', _destroyCache);

  if (Prototype.Browser.WebKit)
    window.addEventListener('unload', Prototype.emptyFunction, false);


  var _getDOMEventName = Prototype.K;

  if (!MOUSEENTER_MOUSELEAVE_EVENTS_SUPPORTED) {
    _getDOMEventName = function(eventName) {
      var translations = { mouseenter: "mouseover", mouseleave: "mouseout" };
      return eventName in translations ? translations[eventName] : eventName;
    };
  }

  function observe(element, eventName, handler) {
    element = $(element);

    var responder = _createResponder(element, eventName, handler);

    if (!responder) return element;

    if (eventName.include(':')) {
      if (element.addEventListener)
        element.addEventListener("dataavailable", responder, false);
      else {
        element.attachEvent("ondataavailable", responder);
        element.attachEvent("onfilterchange", responder);
      }
    } else {
      var actualEventName = _getDOMEventName(eventName);

      if (element.addEventListener)
        element.addEventListener(actualEventName, responder, false);
      else
        element.attachEvent("on" + actualEventName, responder);
    }

    return element;
  }

  function stopObserving(element, eventName, handler) {
    element = $(element);

    var registry = Element.retrieve(element, 'prototype_event_registry');

    if (Object.isUndefined(registry)) return element;

    if (eventName && !handler) {
      var responders = registry.get(eventName);

      if (Object.isUndefined(responders)) return element;

      responders.each( function(r) {
        Element.stopObserving(element, eventName, r.handler);
      });
      return element;
    } else if (!eventName) {
      registry.each( function(pair) {
        var eventName = pair.key, responders = pair.value;

        responders.each( function(r) {
          Element.stopObserving(element, eventName, r.handler);
        });
      });
      return element;
    }

    var responders = registry.get(eventName);

    if (!responders) return;

    var responder = responders.find( function(r) { return r.handler === handler; });
    if (!responder) return element;

    var actualEventName = _getDOMEventName(eventName);

    if (eventName.include(':')) {
      if (element.removeEventListener)
        element.removeEventListener("dataavailable", responder, false);
      else {
        element.detachEvent("ondataavailable", responder);
        element.detachEvent("onfilterchange",  responder);
      }
    } else {
      if (element.removeEventListener)
        element.removeEventListener(actualEventName, responder, false);
      else
        element.detachEvent('on' + actualEventName, responder);
    }

    registry.set(eventName, responders.without(responder));

    return element;
  }

  function fire(element, eventName, memo, bubble) {
    element = $(element);

    if (Object.isUndefined(bubble))
      bubble = true;

    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 = bubble ? 'ondataavailable' : 'onfilterchange';
    }

    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);

  Object.extend(Event, {
    fire:          fire,
    observe:       observe,
    stopObserving: stopObserving
  });

  Element.addMethods({
    fire:          fire,

    observe:       observe,

    stopObserving: stopObserving
  });

  Object.extend(document, {
    fire:          fire.methodize(),

    observe:       observe.methodize(),

    stopObserving: stopObserving.methodize(),

    loaded:        false
  });

  if (window.Event) Object.extend(window.Event, Event);
  else window.Event = Event;
})();

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

  var timer;

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

  function checkReadyState() {
    if (document.readyState === 'complete') {
      document.stopObserving('readystatechange', checkReadyState);
      fireContentLoadedEvent();
    }
  }

  function pollDoScroll() {
    try { document.documentElement.doScroll('left'); }
    catch(e) {
      timer = pollDoScroll.defer();
      return;
    }
    fireContentLoadedEvent();
  }

  if (document.addEventListener) {
    document.addEventListener('DOMContentLoaded', fireContentLoadedEvent, false);
  } else {
    document.observe('readystatechange', checkReadyState);
    if (window == top)
      timer = pollDoScroll.defer();
  }

  Event.observe(window, 'load', fireContentLoadedEvent);
})();

Element.addMethods();

/*------------------------------- 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');

var Position = {
  includeScrollOffsets: false,

  prepare: function() {
    this.deltaX =  window.pageXOffset
                || document.documentElement.scrollLeft
                || document.body.scrollLeft
                || 0;
    this.deltaY =  window.pageYOffset
                || document.documentElement.scrollTop
                || document.body.scrollTop
                || 0;
  },

  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);
  },

  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;
  },


  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);

/*--------------------------------------------------------------------------*/
var Scriptaculous = {
    Version: "1.8.2",
    require: function (a) {
        return true
    },
    REQUIRED_PROTOTYPE: "1.6.0.3",
    load: function () {
        return true
    }
};
var Builder = {
    NODEMAP: {
        AREA: "map",
        CAPTION: "table",
        COL: "table",
        COLGROUP: "table",
        LEGEND: "fieldset",
        OPTGROUP: "select",
        OPTION: "select",
        PARAM: "object",
        TBODY: "table",
        TD: "table",
        TFOOT: "table",
        TH: "table",
        THEAD: "table",
        TR: "table"
    },
    node: function (a) {
        a = a.toUpperCase();
        var g = this.NODEMAP[a] || "div";
        var b = document.createElement(g);
        try {
            b.innerHTML = "<" + a + "></" + a + ">"
        } catch (f) {}
        var d = b.firstChild || null;
        if (d && (d.tagName.toUpperCase() != a)) {
            d = d.getElementsByTagName(a)[0]
        }
        if (!d) {
            d = document.createElement(a)
        }
        if (!d) {
            return
        }
        if (arguments[1]) {
            if (this._isStringOrNumber(arguments[1]) || (arguments[1] instanceof Array) || arguments[1].tagName) {
                this._children(d, arguments[1])
            } else {
                var c = this._attributes(arguments[1]);
                if (c.length) {
                    try {
                        b.innerHTML = "<" + a + " " + c + "></" + a + ">"
                    } catch (f) {}
                    d = b.firstChild || null;
                    if (!d) {
                        d = document.createElement(a);
                        for (attr in arguments[1]) {
                            d[attr == "class" ? "className" : attr] = arguments[1][attr]
                        }
                    }
                    if (d.tagName.toUpperCase() != a) {
                        d = b.getElementsByTagName(a)[0]
                    }
                }
            }
        }
        if (arguments[2]) {
            this._children(d, arguments[2])
        }
        return $(d)
    },
    _text: function (a) {
        return document.createTextNode(a)
    },
    ATTR_MAP: {
        className: "class",
        htmlFor: "for"
    },
    _attributes: function (a) {
        var b = [];
        for (attribute in a) {
            b.push((attribute in this.ATTR_MAP ? this.ATTR_MAP[attribute] : attribute) + '="' + a[attribute].toString().escapeHTML().gsub(/"/, "&quot;") + '"')
        }
        return b.join(" ")
    },
    _children: function (b, a) {
        if (a.tagName) {
            b.appendChild(a);
            return
        }
        if (typeof a == "object") {
            a.flatten().each(function (c) {
                if (typeof c == "object") {
                    b.appendChild(c)
                } else {
                    if (Builder._isStringOrNumber(c)) {
                        b.appendChild(Builder._text(c))
                    }
                }
            })
        } else {
            if (Builder._isStringOrNumber(a)) {
                b.appendChild(Builder._text(a))
            }
        }
    },
    _isStringOrNumber: function (a) {
        return (typeof a == "string" || typeof a == "number")
    },
    build: function (b) {
        var a = this.node("div");
        $(a).update(b.strip());
        return a.down()
    },
    dump: function (b) {
        if (typeof b != "object" && typeof b != "function") {
            b = window
        }
        var a = ("A ABBR ACRONYM ADDRESS APPLET AREA B BASE BASEFONT BDO BIG BLOCKQUOTE BODY BR BUTTON CAPTION CENTER CITE CODE COL COLGROUP DD DEL DFN DIR DIV DL DT EM FIELDSET FONT FORM FRAME FRAMESET H1 H2 H3 H4 H5 H6 HEAD HR HTML I IFRAME IMG INPUT INS ISINDEX KBD LABEL LEGEND LI LINK MAP MENU META NOFRAMES NOSCRIPT OBJECT OL OPTGROUP OPTION P PARAM PRE Q S SAMP SCRIPT SELECT SMALL SPAN STRIKE STRONG STYLE SUB SUP TABLE TBODY TD TEXTAREA TFOOT TH THEAD TITLE TR TT U UL VAR").split(/\s+/);
        a.each(function (c) {
            b[c] = function () {
                return Builder.node.apply(Builder, [c].concat($A(arguments)))
            }
        })
    }
};
String.prototype.parseColor = function () {
    var a = "#";
    if (this.slice(0, 4) == "rgb(") {
        var c = this.slice(4, this.length - 1).split(",");
        var b = 0;
        do {
            a += parseInt(c[b]).toColorPart()
        } while (++b < 3)
    } else {
        if (this.slice(0, 1) == "#") {
            if (this.length == 4) {
                for (var b = 1; b < 4; b++) {
                    a += (this.charAt(b) + this.charAt(b)).toLowerCase()
                }
            }
            if (this.length == 7) {
                a = this.toLowerCase()
            }
        }
    }
    return (a.length == 7 ? a : (arguments[0] || this))
};
Element.collectTextNodes = function (a) {
    return $A($(a).childNodes).collect(function (b) {
        return (b.nodeType == 3 ? b.nodeValue : (b.hasChildNodes() ? Element.collectTextNodes(b) : ""))
    }).flatten().join("")
};
Element.collectTextNodesIgnoreClass = function (a, b) {
    return $A($(a).childNodes).collect(function (c) {
        return (c.nodeType == 3 ? c.nodeValue : ((c.hasChildNodes() && !Element.hasClassName(c, b)) ? Element.collectTextNodesIgnoreClass(c, b) : ""))
    }).flatten().join("")
};
Element.setContentZoom = function (a, b) {
    a = $(a);
    a.setStyle({
        fontSize: (b / 100) + "em"
    });
    if (Prototype.Browser.WebKit) {
        window.scrollBy(0, 0)
    }
    return a
};
Element.getInlineOpacity = function (a) {
    return $(a).style.opacity || ""
};
Element.forceRerendering = function (a) {
    try {
        a = $(a);
        var c = document.createTextNode(" ");
        a.appendChild(c);
        a.removeChild(c)
    } catch (b) {}
};
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 (a) {
            return (-Math.cos(a * Math.PI) / 2) + 0.5
        },
        reverse: function (a) {
            return 1 - a
        },
        flicker: function (a) {
            var a = ((-Math.cos(a * Math.PI) / 4) + 0.75) + Math.random() / 4;
            return a > 1 ? 1 : a
        },
        wobble: function (a) {
            return (-Math.cos(a * Math.PI * (9 * a)) / 2) + 0.5
        },
        pulse: function (b, a) {
            return (-Math.cos((b * ((a || 5) - 0.5) * 2) * Math.PI) / 2) + 0.5
        },
        spring: function (a) {
            return 1 - (Math.cos(a * 4.5 * Math.PI) * Math.exp(-a * 6))
        },
        none: function (a) {
            return 0
        },
        full: function (a) {
            return 1
        }
    },
    DefaultOptions: {
        duration: 1,
        fps: 100,
        sync: false,
        from: 0,
        to: 1,
        delay: 0,
        queue: "parallel"
    },
    tagifyText: function (a) {
        var b = "position:relative";
        if (Prototype.Browser.IE) {
            b += ";zoom:1"
        }
        a = $(a);
        $A(a.childNodes).each(function (c) {
            if (c.nodeType == 3) {
                c.nodeValue.toArray().each(function (d) {
                    a.insertBefore(new Element("span", {
                        style: b
                    }).update(d == " " ? String.fromCharCode(160) : d), c)
                });
                Element.remove(c)
            }
        })
    },
    multiple: function (b, c) {
        var e;
        if (((typeof b == "object") || Object.isFunction(b)) && (b.length)) {
            e = b
        } else {
            e = $(b).childNodes
        }
        var a = Object.extend({
            speed: 0.1,
            delay: 0
        }, arguments[2] || {});
        var d = a.delay;
        $A(e).each(function (g, f) {
            new c(g, Object.extend(a, {
                delay: f * a.speed + d
            }))
        })
    },
    PAIRS: {
        slide: ["SlideDown", "SlideUp"],
        blind: ["BlindDown", "BlindUp"],
        appear: ["Appear", "Fade"]
    },
    toggle: function (b, c) {
        b = $(b);
        c = (c || "appear").toLowerCase();
        var a = Object.extend({
            queue: {
                position: "end",
                scope: (b.id || "global"),
                limit: 1
            }
        }, arguments[2] || {});
        Effect[b.visible() ? Effect.PAIRS[c][1] : Effect.PAIRS[c][0]](b, a)
    }
};
Effect.DefaultOptions.transition = Effect.Transitions.sinoidal;
Effect.ScopedQueue = Class.create(Enumerable, {
    initialize: function () {
        this.effects = [];
        this.interval = null
    },
    _each: function (a) {
        this.effects._each(a)
    },
    add: function (b) {
        var c = new Date().getTime();
        var a = Object.isString(b.options.queue) ? b.options.queue : b.options.queue.position;
        switch (a) {
        case "front":
            this.effects.findAll(function (d) {
                return d.state == "idle"
            }).each(function (d) {
                d.startOn += b.finishOn;
                d.finishOn += b.finishOn
            });
            break;
        case "with-last":
            c = this.effects.pluck("startOn").max() || c;
            break;
        case "end":
            c = this.effects.pluck("finishOn").max() || c;
            break
        }
        b.startOn += c;
        b.finishOn += c;
        if (!b.options.queue.limit || (this.effects.length < b.options.queue.limit)) {
            this.effects.push(b)
        }
        if (!this.interval) {
            this.interval = setInterval(this.loop.bind(this), 15)
        }
    },
    remove: function (a) {
        this.effects = this.effects.reject(function (b) {
            return b == a
        });
        if (this.effects.length == 0) {
            clearInterval(this.interval);
            this.interval = null
        }
    },
    loop: function () {
        var c = new Date().getTime();
        for (var b = 0, a = this.effects.length; b < a; b++) {
            this.effects[b] && this.effects[b].loop(c)
        }
    }
});
Effect.Queues = {
    instances: $H(),
    get: function (a) {
        if (!Object.isString(a)) {
            return a
        }
        return this.instances.get(a) || this.instances.set(a, new Effect.ScopedQueue())
    }
};
Effect.Queue = Effect.Queues.get("global");
Effect.Base = Class.create({
    position: null,
    start: function (a) {
        function b(d, c) {
            return ((d[c + "Internal"] ? "this.options." + c + "Internal(this);" : "") + (d[c] ? "this.options." + c + "(this);" : ""))
        }
        if (a && a.transition === false) {
            a.transition = Effect.Transitions.linear
        }
        this.options = Object.extend(Object.extend({}, Effect.DefaultOptions), a || {});
        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;
        this.render = (function () {
            function c(e, d) {
                if (e.options[d + "Internal"]) {
                    e.options[d + "Internal"](e)
                }
                if (e.options[d]) {
                    e.options[d](e)
                }
            }
            return function (d) {
                if (this.state === "idle") {
                    this.state = "running";
                    c(this, "beforeSetup");
                    if (this.setup) {
                        this.setup()
                    }
                    c(this, "afterSetup")
                }
                if (this.state === "running") {
                    d = (this.options.transition(d) * this.fromToDelta) + this.options.from;
                    this.position = d;
                    c(this, "beforeUpdate");
                    if (this.update) {
                        this.update(d)
                    }
                    c(this, "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 (c) {
        if (c >= this.startOn) {
            if (c >= this.finishOn) {
                this.render(1);
                this.cancel();
                this.event("beforeFinish");
                if (this.finish) {
                    this.finish()
                }
                this.event("afterFinish");
                return
            }
            var b = (c - this.startOn) / this.totalTime,
                a = (b * this.totalFrames).round();
            if (a > this.currentFrame) {
                this.render(b);
                this.currentFrame = a
            }
        }
    },
    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 (a) {
        if (this.options[a + "Internal"]) {
            this.options[a + "Internal"](this)
        }
        if (this.options[a]) {
            this.options[a](this)
        }
    },
    inspect: function () {
        var a = $H();
        for (property in this) {
            if (!Object.isFunction(this[property])) {
                a.set(property, this[property])
            }
        }
        return "#<Effect:" + a.inspect() + ",options:" + $H(this.options).inspect() + ">"
    }
});
Effect.Parallel = Class.create(Effect.Base, {
    initialize: function (a) {
        this.effects = a || [];
        this.start(arguments[1])
    },
    update: function (a) {
        this.effects.invoke("render", a)
    },
    finish: function (a) {
        this.effects.each(function (b) {
            b.render(1);
            b.cancel();
            b.event("beforeFinish");
            if (b.finish) {
                b.finish(a)
            }
            b.event("afterFinish")
        })
    }
});
Effect.Tween = Class.create(Effect.Base, {
    initialize: function (c, f, e) {
        c = Object.isString(c) ? $(c) : c;
        var b = $A(arguments),
            d = b.last(),
            a = b.length == 5 ? b[3] : null;
        this.method = Object.isFunction(d) ? d.bind(c) : Object.isFunction(c[d]) ? c[d].bind(c) : function (g) {
            c[d] = g
        };
        this.start(Object.extend({
            from: f,
            to: e
        }, a || {}))
    },
    update: function (a) {
        this.method(a)
    }
});
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 (b) {
        this.element = $(b);
        if (!this.element) {
            throw (Effect._elementDoesNotExistError)
        }
        if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout)) {
            this.element.setStyle({
                zoom: 1
            })
        }
        var a = Object.extend({
            from: this.element.getOpacity() || 0,
            to: 1
        }, arguments[1] || {});
        this.start(a)
    },
    update: function (a) {
        this.element.setOpacity(a)
    }
});
Effect.Move = Class.create(Effect.Base, {
    initialize: function (b) {
        this.element = $(b);
        if (!this.element) {
            throw (Effect._elementDoesNotExistError)
        }
        var a = Object.extend({
            x: 0,
            y: 0,
            mode: "relative"
        }, arguments[1] || {});
        this.start(a)
    },
    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 (a) {
        this.element.setStyle({
            left: (this.options.x * a + this.originalLeft).round() + "px",
            top: (this.options.y * a + this.originalTop).round() + "px"
        })
    }
});
Effect.MoveBy = function (b, a, c) {
    return new Effect.Move(b, Object.extend({
        x: c,
        y: a
    }, arguments[3] || {}))
};
Effect.Scale = Class.create(Effect.Base, {
    initialize: function (b, c) {
        this.element = $(b);
        if (!this.element) {
            throw (Effect._elementDoesNotExistError)
        }
        var a = Object.extend({
            scaleX: true,
            scaleY: true,
            scaleContent: true,
            scaleFromCenter: false,
            scaleMode: "box",
            scaleFrom: 100,
            scaleTo: c
        }, arguments[2] || {});
        this.start(a)
    },
    setup: function () {
        this.restoreAfterFinish = this.options.restoreAfterFinish || false;
        this.elementPositioning = this.element.getStyle("position");
        this.originalStyle = {};
        ["top", "left", "width", "height", "fontSize"].each(function (b) {
            this.originalStyle[b] = this.element.style[b]
        }.bind(this));
        this.originalTop = this.element.offsetTop;
        this.originalLeft = this.element.offsetLeft;
        var a = this.element.getStyle("font-size") || "100%";
        ["em", "px", "%", "pt"].each(function (b) {
            if (a.indexOf(b) > 0) {
                this.fontSize = parseFloat(a);
                this.fontSizeType = b
            }
        }.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 (a) {
        var b = (this.options.scaleFrom / 100) + (this.factor * a);
        if (this.options.scaleContent && this.fontSize) {
            this.element.setStyle({
                fontSize: this.fontSize * b + this.fontSizeType
            })
        }
        this.setDimensions(this.dims[0] * b, this.dims[1] * b)
    },
    finish: function (a) {
        if (this.restoreAfterFinish) {
            this.element.setStyle(this.originalStyle)
        }
    },
    setDimensions: function (a, e) {
        var f = {};
        if (this.options.scaleX) {
            f.width = e.round() + "px"
        }
        if (this.options.scaleY) {
            f.height = a.round() + "px"
        }
        if (this.options.scaleFromCenter) {
            var c = (a - this.dims[0]) / 2;
            var b = (e - this.dims[1]) / 2;
            if (this.elementPositioning == "absolute") {
                if (this.options.scaleY) {
                    f.top = this.originalTop - c + "px"
                }
                if (this.options.scaleX) {
                    f.left = this.originalLeft - b + "px"
                }
            } else {
                if (this.options.scaleY) {
                    f.top = -c + "px"
                }
                if (this.options.scaleX) {
                    f.left = -b + "px"
                }
            }
        }
        this.element.setStyle(f)
    }
});
Effect.Highlight = Class.create(Effect.Base, {
    initialize: function (b) {
        this.element = $(b);
        if (!this.element) {
            throw (Effect._elementDoesNotExistError)
        }
        var a = Object.extend({
            startcolor: "#ffff99"
        }, arguments[1] || {});
        this.start(a)
    },
    setup: function () {
        if (this.element.getStyle("display") == "none") {
            this.cancel();
            return
        }
        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")
        }
        this._base = $R(0, 2).map(function (a) {
            return parseInt(this.options.startcolor.slice(a * 2 + 1, a * 2 + 3), 16)
        }.bind(this));
        this._delta = $R(0, 2).map(function (a) {
            return parseInt(this.options.endcolor.slice(a * 2 + 1, a * 2 + 3), 16) - this._base[a]
        }.bind(this))
    },
    update: function (a) {
        this.element.setStyle({
            backgroundColor: $R(0, 2).inject("#", function (b, c, d) {
                return b + ((this._base[d] + (this._delta[d] * a)).round().toColorPart())
            }.bind(this))
        })
    },
    finish: function () {
        this.element.setStyle(Object.extend(this.oldStyle, {
            backgroundColor: this.options.restorecolor
        }))
    }
});
Effect.ScrollTo = function (c) {
    var b = arguments[1] || {},
        a = document.viewport.getScrollOffsets(),
        d = $(c).cumulativeOffset();
    if (b.offset) {
        d[1] += b.offset
    }
    return new Effect.Tween(null, a.top, d[1], b, function (e) {
        scrollTo(a.left, e.round())
    })
};
Effect.Fade = function (c) {
    c = $(c);
    var a = c.getInlineOpacity();
    var b = Object.extend({
        from: c.getOpacity() || 1,
        to: 0,
        afterFinishInternal: function (d) {
            if (d.options.to != 0) {
                return
            }
            d.element.hide().setStyle({
                opacity: a
            })
        }
    }, arguments[1] || {});
    return new Effect.Opacity(c, b)
};
Effect.Appear = function (b) {
    b = $(b);
    var a = Object.extend({
        from: (b.getStyle("display") == "none" ? 0 : b.getOpacity() || 0),
        to: 1,
        afterFinishInternal: function (c) {
            c.element.forceRerendering()
        },
        beforeSetup: function (c) {
            c.element.setOpacity(c.options.from).show()
        }
    }, arguments[1] || {});
    return new Effect.Opacity(b, a)
};
Effect.Puff = function (b) {
    b = $(b);
    var a = {
        opacity: b.getInlineOpacity(),
        position: b.getStyle("position"),
        top: b.style.top,
        left: b.style.left,
        width: b.style.width,
        height: b.style.height
    };
    return new Effect.Parallel([new Effect.Scale(b, 200, {
        sync: true,
        scaleFromCenter: true,
        scaleContent: true,
        restoreAfterFinish: true
    }), new Effect.Opacity(b, {
        sync: true,
        to: 0
    })], Object.extend({
        duration: 1,
        beforeSetupInternal: function (c) {
            Position.absolutize(c.effects[0].element)
        },
        afterFinishInternal: function (c) {
            c.effects[0].element.hide().setStyle(a)
        }
    }, arguments[1] || {}))
};
Effect.BlindUp = function (a) {
    a = $(a);
    a.makeClipping();
    return new Effect.Scale(a, 0, Object.extend({
        scaleContent: false,
        scaleX: false,
        restoreAfterFinish: true,
        afterFinishInternal: function (b) {
            b.element.hide().undoClipping()
        }
    }, arguments[1] || {}))
};
Effect.BlindDown = function (b) {
    b = $(b);
    var a = b.getDimensions();
    return new Effect.Scale(b, 100, Object.extend({
        scaleContent: false,
        scaleX: false,
        scaleFrom: 0,
        scaleMode: {
            originalHeight: a.height,
            originalWidth: a.width
        },
        restoreAfterFinish: true,
        afterSetup: function (c) {
            c.element.makeClipping().setStyle({
                height: "0px"
            }).show()
        },
        afterFinishInternal: function (c) {
            c.element.undoClipping()
        }
    }, arguments[1] || {}))
};
Effect.SwitchOff = function (b) {
    b = $(b);
    var a = b.getInlineOpacity();
    return new Effect.Appear(b, Object.extend({
        duration: 0.4,
        from: 0,
        transition: Effect.Transitions.flicker,
        afterFinishInternal: function (c) {
            new Effect.Scale(c.element, 1, {
                duration: 0.3,
                scaleFromCenter: true,
                scaleX: false,
                scaleContent: false,
                restoreAfterFinish: true,
                beforeSetup: function (d) {
                    d.element.makePositioned().makeClipping()
                },
                afterFinishInternal: function (d) {
                    d.element.hide().undoClipping().undoPositioned().setStyle({
                        opacity: a
                    })
                }
            })
        }
    }, arguments[1] || {}))
};
Effect.DropOut = function (b) {
    b = $(b);
    var a = {
        top: b.getStyle("top"),
        left: b.getStyle("left"),
        opacity: b.getInlineOpacity()
    };
    return new Effect.Parallel([new Effect.Move(b, {
        x: 0,
        y: 100,
        sync: true
    }), new Effect.Opacity(b, {
        sync: true,
        to: 0
    })], Object.extend({
        duration: 0.5,
        beforeSetup: function (c) {
            c.effects[0].element.makePositioned()
        },
        afterFinishInternal: function (c) {
            c.effects[0].element.hide().undoPositioned().setStyle(a)
        }
    }, arguments[1] || {}))
};
Effect.Shake = function (d) {
    d = $(d);
    var b = Object.extend({
        distance: 20,
        duration: 0.5
    }, arguments[1] || {});
    var e = parseFloat(b.distance);
    var c = parseFloat(b.duration) / 10;
    var a = {
        top: d.getStyle("top"),
        left: d.getStyle("left")
    };
    return new Effect.Move(d, {
        x: e,
        y: 0,
        duration: c,
        afterFinishInternal: function (f) {
            new Effect.Move(f.element, {
                x: -e * 2,
                y: 0,
                duration: c * 2,
                afterFinishInternal: function (g) {
                    new Effect.Move(g.element, {
                        x: e * 2,
                        y: 0,
                        duration: c * 2,
                        afterFinishInternal: function (h) {
                            new Effect.Move(h.element, {
                                x: -e * 2,
                                y: 0,
                                duration: c * 2,
                                afterFinishInternal: function (j) {
                                    new Effect.Move(j.element, {
                                        x: e * 2,
                                        y: 0,
                                        duration: c * 2,
                                        afterFinishInternal: function (k) {
                                            new Effect.Move(k.element, {
                                                x: -e,
                                                y: 0,
                                                duration: c,
                                                afterFinishInternal: function (l) {
                                                    l.element.undoPositioned().setStyle(a)
                                                }
                                            })
                                        }
                                    })
                                }
                            })
                        }
                    })
                }
            })
        }
    })
};
Effect.SlideDown = function (c) {
    c = $(c).cleanWhitespace();
    var a = c.down().getStyle("bottom");
    var b = c.getDimensions();
    return new Effect.Scale(c, 100, Object.extend({
        scaleContent: false,
        scaleX: false,
        scaleFrom: window.opera ? 0 : 1,
        scaleMode: {
            originalHeight: b.height,
            originalWidth: b.width
        },
        restoreAfterFinish: true,
        afterSetup: function (d) {
            d.element.makePositioned();
            d.element.down().makePositioned();
            if (window.opera) {
                d.element.setStyle({
                    top: ""
                })
            }
            d.element.makeClipping().setStyle({
                height: "0px"
            }).show()
        },
        afterUpdateInternal: function (d) {
            d.element.down().setStyle({
                bottom: (d.dims[0] - d.element.clientHeight) + "px"
            })
        },
        afterFinishInternal: function (d) {
            d.element.undoClipping().undoPositioned();
            d.element.down().undoPositioned().setStyle({
                bottom: a
            })
        }
    }, arguments[1] || {}))
};
Effect.SlideUp = function (c) {
    c = $(c).cleanWhitespace();
    var a = c.down().getStyle("bottom");
    var b = c.getDimensions();
    return new Effect.Scale(c, window.opera ? 0 : 1, Object.extend({
        scaleContent: false,
        scaleX: false,
        scaleMode: "box",
        scaleFrom: 100,
        scaleMode: {
            originalHeight: b.height,
            originalWidth: b.width
        },
        restoreAfterFinish: true,
        afterSetup: function (d) {
            d.element.makePositioned();
            d.element.down().makePositioned();
            if (window.opera) {
                d.element.setStyle({
                    top: ""
                })
            }
            d.element.makeClipping().show()
        },
        afterUpdateInternal: function (d) {
            d.element.down().setStyle({
                bottom: (d.dims[0] - d.element.clientHeight) + "px"
            })
        },
        afterFinishInternal: function (d) {
            d.element.hide().undoClipping().undoPositioned();
            d.element.down().undoPositioned().setStyle({
                bottom: a
            })
        }
    }, arguments[1] || {}))
};
Effect.Squish = function (a) {
    return new Effect.Scale(a, window.opera ? 1 : 0, {
        restoreAfterFinish: true,
        beforeSetup: function (b) {
            b.element.makeClipping()
        },
        afterFinishInternal: function (b) {
            b.element.hide().undoClipping()
        }
    })
};
Effect.Grow = function (c) {
    c = $(c);
    var b = Object.extend({
        direction: "center",
        moveTransition: Effect.Transitions.sinoidal,
        scaleTransition: Effect.Transitions.sinoidal,
        opacityTransition: Effect.Transitions.full
    }, arguments[1] || {});
    var a = {
        top: c.style.top,
        left: c.style.left,
        height: c.style.height,
        width: c.style.width,
        opacity: c.getInlineOpacity()
    };
    var g = c.getDimensions();
    var h, f;
    var e, d;
    switch (b.direction) {
    case "top-left":
        h = f = e = d = 0;
        break;
    case "top-right":
        h = g.width;
        f = d = 0;
        e = -g.width;
        break;
    case "bottom-left":
        h = e = 0;
        f = g.height;
        d = -g.height;
        break;
    case "bottom-right":
        h = g.width;
        f = g.height;
        e = -g.width;
        d = -g.height;
        break;
    case "center":
        h = g.width / 2;
        f = g.height / 2;
        e = -g.width / 2;
        d = -g.height / 2;
        break
    }
    return new Effect.Move(c, {
        x: h,
        y: f,
        duration: 0.01,
        beforeSetup: function (j) {
            j.element.hide().makeClipping().makePositioned()
        },
        afterFinishInternal: function (j) {
            new Effect.Parallel([new Effect.Opacity(j.element, {
                sync: true,
                to: 1,
                from: 0,
                transition: b.opacityTransition
            }), new Effect.Move(j.element, {
                x: e,
                y: d,
                sync: true,
                transition: b.moveTransition
            }), new Effect.Scale(j.element, 100, {
                scaleMode: {
                    originalHeight: g.height,
                    originalWidth: g.width
                },
                sync: true,
                scaleFrom: window.opera ? 1 : 0,
                transition: b.scaleTransition,
                restoreAfterFinish: true
            })], Object.extend({
                beforeSetup: function (k) {
                    k.effects[0].element.setStyle({
                        height: "0px"
                    }).show()
                },
                afterFinishInternal: function (k) {
                    k.effects[0].element.undoClipping().undoPositioned().setStyle(a)
                }
            }, b))
        }
    })
};
Effect.Shrink = function (c) {
    c = $(c);
    var b = Object.extend({
        direction: "center",
        moveTransition: Effect.Transitions.sinoidal,
        scaleTransition: Effect.Transitions.sinoidal,
        opacityTransition: Effect.Transitions.none
    }, arguments[1] || {});
    var a = {
        top: c.style.top,
        left: c.style.left,
        height: c.style.height,
        width: c.style.width,
        opacity: c.getInlineOpacity()
    };
    var f = c.getDimensions();
    var e, d;
    switch (b.direction) {
    case "top-left":
        e = d = 0;
        break;
    case "top-right":
        e = f.width;
        d = 0;
        break;
    case "bottom-left":
        e = 0;
        d = f.height;
        break;
    case "bottom-right":
        e = f.width;
        d = f.height;
        break;
    case "center":
        e = f.width / 2;
        d = f.height / 2;
        break
    }
    return new Effect.Parallel([new Effect.Opacity(c, {
        sync: true,
        to: 0,
        from: 1,
        transition: b.opacityTransition
    }), new Effect.Scale(c, window.opera ? 1 : 0, {
        sync: true,
        transition: b.scaleTransition,
        restoreAfterFinish: true
    }), new Effect.Move(c, {
        x: e,
        y: d,
        sync: true,
        transition: b.moveTransition
    })], Object.extend({
        beforeStartInternal: function (g) {
            g.effects[0].element.makePositioned().makeClipping()
        },
        afterFinishInternal: function (g) {
            g.effects[0].element.hide().undoClipping().undoPositioned().setStyle(a)
        }
    }, b))
};
Effect.Pulsate = function (c) {
    c = $(c);
    var b = arguments[1] || {},
        a = c.getInlineOpacity(),
        e = b.transition || Effect.Transitions.linear,
        d = function (f) {
            return 1 - e((-Math.cos((f * (b.pulses || 5) * 2) * Math.PI) / 2) + 0.5)
        };
    return new Effect.Opacity(c, Object.extend(Object.extend({
        duration: 2,
        from: 0,
        afterFinishInternal: function (f) {
            f.element.setStyle({
                opacity: a
            })
        }
    }, b), {
        transition: d
    }))
};
Effect.Fold = function (b) {
    b = $(b);
    var a = {
        top: b.style.top,
        left: b.style.left,
        width: b.style.width,
        height: b.style.height
    };
    b.makeClipping();
    return new Effect.Scale(b, 5, Object.extend({
        scaleContent: false,
        scaleX: false,
        afterFinishInternal: function (c) {
            new Effect.Scale(b, 1, {
                scaleContent: false,
                scaleY: false,
                afterFinishInternal: function (d) {
                    d.element.hide().undoClipping().setStyle(a)
                }
            })
        }
    }, arguments[1] || {}))
};
Effect.Morph = Class.create(Effect.Base, {
    initialize: function (c) {
        this.element = $(c);
        if (!this.element) {
            throw (Effect._elementDoesNotExistError)
        }
        var a = Object.extend({
            style: {}
        }, arguments[1] || {});
        if (!Object.isString(a.style)) {
            this.style = $H(a.style)
        } else {
            if (a.style.include(":")) {
                this.style = a.style.parseStyle()
            } else {
                this.element.addClassName(a.style);
                this.style = $H(this.element.getStyles());
                this.element.removeClassName(a.style);
                var b = this.element.getStyles();
                this.style = this.style.reject(function (d) {
                    return d.value == b[d.key]
                });
                a.afterFinishInternal = function (d) {
                    d.element.addClassName(d.options.style);
                    d.transforms.each(function (e) {
                        d.element.style[e.style] = ""
                    })
                }
            }
        }
        this.start(a)
    },
    setup: function () {
        function a(b) {
            if (!b || ["rgba(0, 0, 0, 0)", "transparent"].include(b)) {
                b = "#ffffff"
            }
            b = b.parseColor();
            return $R(0, 2).map(function (c) {
                return parseInt(b.slice(c * 2 + 1, c * 2 + 3), 16)
            })
        }
        this.transforms = this.style.map(function (g) {
            var f = g[0],
                e = g[1],
                d = null;
            if (e.parseColor("#zzzzzz") != "#zzzzzz") {
                e = e.parseColor();
                d = "color"
            } else {
                if (f == "opacity") {
                    e = parseFloat(e);
                    if (Prototype.Browser.IE && (!this.element.currentStyle.hasLayout)) {
                        this.element.setStyle({
                            zoom: 1
                        })
                    }
                } else {
                    if (Element.CSS_LENGTH.test(e)) {
                        var c = e.match(/^([\+\-]?[0-9\.]+)(.*)$/);
                        e = parseFloat(c[1]);
                        d = (c.length == 3) ? c[2] : null
                    }
                }
            }
            var b = this.element.getStyle(f);
            return {
                style: f.camelize(),
                originalValue: d == "color" ? a(b) : parseFloat(b || 0),
                targetValue: d == "color" ? a(e) : e,
                unit: d
            }
        }.bind(this)).reject(function (b) {
            return ((b.originalValue == b.targetValue) || (b.unit != "color" && (isNaN(b.originalValue) || isNaN(b.targetValue))))
        })
    },
    update: function (a) {
        var d = {},
            b, c = this.transforms.length;
        while (c--) {
            d[(b = this.transforms[c]).style] = b.unit == "color" ? "#" + (Math.round(b.originalValue[0] + (b.targetValue[0] - b.originalValue[0]) * a)).toColorPart() + (Math.round(b.originalValue[1] + (b.targetValue[1] - b.originalValue[1]) * a)).toColorPart() + (Math.round(b.originalValue[2] + (b.targetValue[2] - b.originalValue[2]) * a)).toColorPart() : (b.originalValue + (b.targetValue - b.originalValue) * a).toFixed(3) + (b.unit === null ? "" : b.unit)
        }
        this.element.setStyle(d, true)
    }
});
Effect.Transform = Class.create({
    initialize: function (a) {
        this.tracks = [];
        this.options = arguments[1] || {};
        this.addTracks(a)
    },
    addTracks: function (a) {
        a.each(function (b) {
            b = $H(b);
            var c = b.values().first();
            this.tracks.push($H({
                ids: b.keys().first(),
                effect: Effect.Morph,
                options: {
                    style: c
                }
            }))
        }.bind(this));
        return this
    },
    play: function () {
        return new Effect.Parallel(this.tracks.map(function (a) {
            var d = a.get("ids"),
                c = a.get("effect"),
                b = a.get("options");
            var e = [$(d) || $$(d)].flatten();
            return e.map(function (f) {
                return new c(f, Object.extend({
                    sync: true
                }, b))
            })
        }).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 b, a = $H();
    if (Prototype.Browser.WebKit) {
        b = new Element("div", {
            style: this
        }).style
    } else {
        String.__parseStyleElement.innerHTML = '<div style="' + this + '"></div>';
        b = String.__parseStyleElement.childNodes[0].style
    }
    Element.CSS_PROPERTIES.each(function (c) {
        if (b[c]) {
            a.set(c, b[c])
        }
    });
    if (Prototype.Browser.IE && this.include("opacity")) {
        a.set("opacity", this.match(/opacity:\s*((?:0|1)?(?:\.\d*)?)/)[1])
    }
    return a
};
if (document.defaultView && document.defaultView.getComputedStyle) {
    Element.getStyles = function (b) {
        var a = document.defaultView.getComputedStyle($(b), null);
        return Element.CSS_PROPERTIES.inject({}, function (c, d) {
            c[d] = a[d];
            return c
        })
    }
} else {
    Element.getStyles = function (b) {
        b = $(b);
        var a = b.currentStyle,
            c;
        c = Element.CSS_PROPERTIES.inject({}, function (d, e) {
            d[e] = a[e];
            return d
        });
        if (!c.opacity) {
            c.opacity = b.getOpacity()
        }
        return c
    }
}
Effect.Methods = {
    morph: function (a, b) {
        a = $(a);
        new Effect.Morph(a, Object.extend({
            style: b
        }, arguments[2] || {}));
        return a
    },
    visualEffect: function (c, e, b) {
        c = $(c);
        var d = e.dasherize().camelize(),
            a = d.charAt(0).toUpperCase() + d.substring(1);
        new Effect[a](c, b);
        return c
    },
    highlight: function (b, a) {
        b = $(b);
        new Effect.Highlight(b, a);
        return b
    }
};
$w("fade appear grow shrink fold blindUp blindDown slideUp slideDown pulsate shake puff squish switchOff dropOut").each(function (a) {
    Effect.Methods[a] = function (c, b) {
        c = $(c);
        Effect[a.charAt(0).toUpperCase() + a.substring(1)](c, b);
        return c
    }
});
$w("getInlineOpacity forceRerendering setContentZoom collectTextNodes collectTextNodesIgnoreClass getStyles").each(function (a) {
    Effect.Methods[a] = Element[a]
});
Element.addMethods(Effect.Methods);
if (Object.isUndefined(Effect)) {
    throw ("dragdrop.js requires including script.aculo.us' effects.js library")
}
var Droppables = {
    drops: [],
    remove: function (a) {
        this.drops = this.drops.reject(function (b) {
            return b.element == $(a)
        })
    },
    add: function (b) {
        b = $(b);
        var a = Object.extend({
            greedy: true,
            hoverclass: null,
            tree: false
        }, arguments[1] || {});
        if (a.containment) {
            a._containers = [];
            var c = a.containment;
            if (Object.isArray(c)) {
                c.each(function (d) {
                    a._containers.push($(d))
                })
            } else {
                a._containers.push($(c))
            }
        }
        if (a.accept) {
            a.accept = [a.accept].flatten()
        }
        Element.makePositioned(b);
        a.element = b;
        this.drops.push(a)
    },
    findDeepestChild: function (a) {
        deepest = a[0];
        for (i = 1; i < a.length; ++i) {
            if (Element.isParent(a[i].element, deepest.element)) {
                deepest = a[i]
            }
        }
        return deepest
    },
    isContained: function (b, a) {
        var c;
        if (a.tree) {
            c = b.treeNode
        } else {
            c = b.parentNode
        }
        return a._containers.detect(function (d) {
            return c == d
        })
    },
    isAffected: function (a, c, b) {
        return ((b.element != c) && ((!b._containers) || this.isContained(c, b)) && ((!b.accept) || (Element.classNames(c).detect(function (d) {
            return b.accept.include(d)
        }))) && Position.within(b.element, a[0], a[1]))
    },
    deactivate: function (a) {
        if (a.hoverclass) {
            Element.removeClassName(a.element, a.hoverclass)
        }
        this.last_active = null
    },
    activate: function (a) {
        if (a.hoverclass) {
            Element.addClassName(a.element, a.hoverclass)
        }
        this.last_active = a
    },
    show: function (a, c) {
        if (!this.drops.length) {
            return
        }
        var b, d = [];
        this.drops.each(function (e) {
            if (Droppables.isAffected(a, c, e)) {
                d.push(e)
            }
        });
        if (d.length > 0) {
            b = Droppables.findDeepestChild(d)
        }
        if (this.last_active && this.last_active != b) {
            this.deactivate(this.last_active)
        }
        if (b) {
            Position.within(b.element, a[0], a[1]);
            if (b.onHover) {
                b.onHover(c, b.element, Position.overlap(b.overlap, b.element))
            }
            if (b != this.last_active) {
                Droppables.activate(b)
            }
        }
    },
    fire: function (b, a) {
        if (!this.last_active) {
            return
        }
        Position.prepare();
        if (this.isAffected([Event.pointerX(b), Event.pointerY(b)], a, this.last_active)) {
            if (this.last_active.onDrop) {
                this.last_active.onDrop(a, this.last_active.element, b);
                return true
            }
        }
    },
    reset: function () {
        if (this.last_active) {
            this.deactivate(this.last_active)
        }
    }
};
var Draggables = {
    drags: [],
    observers: [],
    register: function (a) {
        if (this.drags.length == 0) {
            this.eventMouseUp = this.endDrag.bindAsEventListener(this);
            this.eventMouseMove = this.updateDrag.bindAsEventListener(this);
            this.eventKeypress = this.keyPress.bindAsEventListener(this);
            Event.observe(document, "mouseup", this.eventMouseUp);
            Event.observe(document, "mousemove", this.eventMouseMove);
            Event.observe(document, "keypress", this.eventKeypress)
        }
        this.drags.push(a)
    },
    unregister: function (a) {
        this.drags = this.drags.reject(function (b) {
            return b == a
        });
        if (this.drags.length == 0) {
            Event.stopObserving(document, "mouseup", this.eventMouseUp);
            Event.stopObserving(document, "mousemove", this.eventMouseMove);
            Event.stopObserving(document, "keypress", this.eventKeypress)
        }
    },
    activate: function (a) {
        if (a.options.delay) {
            this._timeout = setTimeout(function () {
                Draggables._timeout = null;
                window.focus();
                Draggables.activeDraggable = a
            }.bind(this), a.options.delay)
        } else {
            window.focus();
            this.activeDraggable = a
        }
    },
    deactivate: function () {
        this.activeDraggable = null
    },
    updateDrag: function (a) {
        if (!this.activeDraggable) {
            return
        }
        var b = [Event.pointerX(a), Event.pointerY(a)];
        if (this._lastPointer && (this._lastPointer.inspect() == b.inspect())) {
            return
        }
        this._lastPointer = b;
        this.activeDraggable.updateDrag(a, b)
    },
    endDrag: function (a) {
        if (this._timeout) {
            clearTimeout(this._timeout);
            this._timeout = null
        }
        if (!this.activeDraggable) {
            return
        }
        this._lastPointer = null;
        this.activeDraggable.endDrag(a);
        this.activeDraggable = null
    },
    keyPress: function (a) {
        if (this.activeDraggable) {
            this.activeDraggable.keyPress(a)
        }
    },
    addObserver: function (a) {
        this.observers.push(a);
        this._cacheObserverCallbacks()
    },
    removeObserver: function (a) {
        this.observers = this.observers.reject(function (b) {
            return b.element == a
        });
        this._cacheObserverCallbacks()
    },
    notify: function (b, a, c) {
        if (this[b + "Count"] > 0) {
            this.observers.each(function (d) {
                if (d[b]) {
                    d[b](b, a, c)
                }
            })
        }
        if (a.options[b]) {
            a.options[b](a, c)
        }
    },
    _cacheObserverCallbacks: function () {
        ["onStart", "onEnd", "onDrag"].each(function (a) {
            Draggables[a + "Count"] = Draggables.observers.select(function (b) {
                return b[a]
            }).length
        })
    }
};
var Draggable = Class.create({
    initialize: function (b) {
        var c = {
            handle: false,
            reverteffect: function (f, e, d) {
                var g = Math.sqrt(Math.abs(e ^ 2) + Math.abs(d ^ 2)) * 0.02;
                new Effect.Move(f, {
                    x: -d,
                    y: -e,
                    duration: g,
                    queue: {
                        scope: "_draggable",
                        position: "end"
                    }
                })
            },
            endeffect: function (e) {
                var d = Object.isNumber(e._opacity) ? e._opacity : 1;
                new Effect.Opacity(e, {
                    duration: 0.2,
                    from: 0.7,
                    to: d,
                    queue: {
                        scope: "_draggable",
                        position: "end"
                    },
                    afterFinish: function () {
                        Draggable._dragging[e] = false
                    }
                })
            },
            zindex: 1000,
            revert: false,
            quiet: false,
            scroll: false,
            scrollSensitivity: 20,
            scrollSpeed: 15,
            snap: false,
            delay: 0
        };
        if (!arguments[1] || Object.isUndefined(arguments[1].endeffect)) {
            Object.extend(c, {
                starteffect: function (d) {
                    d._opacity = Element.getOpacity(d);
                    Draggable._dragging[d] = true;
                    new Effect.Opacity(d, {
                        duration: 0.2,
                        from: d._opacity,
                        to: 0.7
                    })
                }
            })
        }
        var a = Object.extend(c, arguments[1] || {});
        this.element = $(b);
        if (a.handle && Object.isString(a.handle)) {
            this.handle = this.element.down("." + a.handle, 0)
        }
        if (!this.handle) {
            this.handle = $(a.handle)
        }
        if (!this.handle) {
            this.handle = this.element
        }
        if (a.scroll && !a.scroll.scrollTo && !a.scroll.outerHTML) {
            a.scroll = $(a.scroll);
            this._isScrollChild = Element.childOf(this.element, a.scroll)
        }
        Element.makePositioned(this.element);
        this.options = a;
        this.dragging = false;
        this.eventMouseDown = this.initDrag.bindAsEventListener(this);
        Event.observe(this.handle, "mousedown", this.eventMouseDown);
        Draggables.register(this)
    },
    destroy: function () {
        Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
        Draggables.unregister(this)
    },
    currentDelta: function () {
        return ([parseInt(Element.getStyle(this.element, "left") || "0"), parseInt(Element.getStyle(this.element, "top") || "0")])
    },
    initDrag: function (a) {
        if (!Object.isUndefined(Draggable._dragging[this.element]) && Draggable._dragging[this.element]) {
            return
        }
        if (Event.isLeftClick(a)) {
            var c = Event.element(a);
            if ((tag_name = c.tagName.toUpperCase()) && (tag_name == "INPUT" || tag_name == "SELECT" || tag_name == "OPTION" || tag_name == "BUTTON" || tag_name == "TEXTAREA")) {
                return
            }
            var b = [Event.pointerX(a), Event.pointerY(a)];
            var d = Position.cumulativeOffset(this.element);
            this.offset = [0, 1].map(function (e) {
                return (b[e] - d[e])
            });
            Draggables.activate(this);
            Event.stop(a)
        }
    },
    startDrag: function (b) {
        this.dragging = true;
        if (!this.delta) {
            this.delta = this.currentDelta()
        }
        if (this.options.zindex) {
            this.originalZ = parseInt(Element.getStyle(this.element, "z-index") || 0);
            this.element.style.zIndex = this.options.zindex
        }
        if (this.options.ghosting) {
            this._clone = this.element.cloneNode(true);
            this._originallyAbsolute = (this.element.getStyle("position") == "absolute");
            if (!this._originallyAbsolute) {
                Position.absolutize(this.element)
            }
            this.element.parentNode.insertBefore(this._clone, this.element)
        }
        if (this.options.scroll) {
            if (this.options.scroll == window) {
                var a = this._getWindowScroll(this.options.scroll);
                this.originalScrollLeft = a.left;
                this.originalScrollTop = a.top
            } else {
                this.originalScrollLeft = this.options.scroll.scrollLeft;
                this.originalScrollTop = this.options.scroll.scrollTop
            }
        }
        Draggables.notify("onStart", this, b);
        if (this.options.starteffect) {
            this.options.starteffect(this.element)
        }
    },
    updateDrag: function (event, pointer) {
        if (!this.dragging) {
            this.startDrag(event)
        }
        if (!this.options.quiet) {
            Position.prepare();
            Droppables.show(pointer, this.element)
        }
        Draggables.notify("onDrag", this, event);
        this.draw(pointer);
        if (this.options.change) {
            this.options.change(this)
        }
        if (this.options.scroll) {
            this.stopScrolling();
            var p;
            if (this.options.scroll == window) {
                with(this._getWindowScroll(this.options.scroll)) {
                    p = [left, top, left + width, top + height]
                }
            } else {
                p = Position.page(this.options.scroll);
                p[0] += this.options.scroll.scrollLeft + Position.deltaX;
                p[1] += this.options.scroll.scrollTop + Position.deltaY;
                p.push(p[0] + this.options.scroll.offsetWidth);
                p.push(p[1] + this.options.scroll.offsetHeight)
            }
            var speed = [0, 0];
            if (pointer[0] < (p[0] + this.options.scrollSensitivity)) {
                speed[0] = pointer[0] - (p[0] + this.options.scrollSensitivity)
            }
            if (pointer[1] < (p[1] + this.options.scrollSensitivity)) {
                speed[1] = pointer[1] - (p[1] + this.options.scrollSensitivity)
            }
            if (pointer[0] > (p[2] - this.options.scrollSensitivity)) {
                speed[0] = pointer[0] - (p[2] - this.options.scrollSensitivity)
            }
            if (pointer[1] > (p[3] - this.options.scrollSensitivity)) {
                speed[1] = pointer[1] - (p[3] - this.options.scrollSensitivity)
            }
            this.startScrolling(speed)
        }
        if (Prototype.Browser.WebKit) {
            window.scrollBy(0, 0)
        }
        Event.stop(event)
    },
    finishDrag: function (b, f) {
        this.dragging = false;
        if (this.options.quiet) {
            Position.prepare();
            var e = [Event.pointerX(b), Event.pointerY(b)];
            Droppables.show(e, this.element)
        }
        if (this.options.ghosting) {
            if (!this._originallyAbsolute) {
                Position.relativize(this.element)
            }
            delete this._originallyAbsolute;
            Element.remove(this._clone);
            this._clone = null
        }
        var g = false;
        if (f) {
            g = Droppables.fire(b, this.element);
            if (!g) {
                g = false
            }
        }
        if (g && this.options.onDropped) {
            this.options.onDropped(this.element)
        }
        Draggables.notify("onEnd", this, b);
        var a = this.options.revert;
        if (a && Object.isFunction(a)) {
            a = a(this.element)
        }
        var c = this.currentDelta();
        if (a && this.options.reverteffect) {
            if (g == 0 || a != "failure") {
                this.options.reverteffect(this.element, c[1] - this.delta[1], c[0] - this.delta[0])
            }
        } else {
            this.delta = c
        }
        if (this.options.zindex) {
            this.element.style.zIndex = this.originalZ
        }
        if (this.options.endeffect) {
            this.options.endeffect(this.element)
        }
        Draggables.deactivate(this);
        Droppables.reset()
    },
    keyPress: function (a) {
        if (a.keyCode != Event.KEY_ESC) {
            return
        }
        this.finishDrag(a, false);
        Event.stop(a)
    },
    endDrag: function (a) {
        if (!this.dragging) {
            return
        }
        this.stopScrolling();
        this.finishDrag(a, true);
        Event.stop(a)
    },
    draw: function (a) {
        var g = Position.cumulativeOffset(this.element);
        if (this.options.ghosting) {
            var c = Position.realOffset(this.element);
            g[0] += c[0] - Position.deltaX;
            g[1] += c[1] - Position.deltaY
        }
        var f = this.currentDelta();
        g[0] -= f[0];
        g[1] -= f[1];
        if (this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
            g[0] -= this.options.scroll.scrollLeft - this.originalScrollLeft;
            g[1] -= this.options.scroll.scrollTop - this.originalScrollTop
        }
        var e = [0, 1].map(function (d) {
            return (a[d] - g[d] - this.offset[d])
        }.bind(this));
        if (this.options.snap) {
            if (Object.isFunction(this.options.snap)) {
                e = this.options.snap(e[0], e[1], this)
            } else {
                if (Object.isArray(this.options.snap)) {
                    e = e.map(function (d, h) {
                        return (d / this.options.snap[h]).round() * this.options.snap[h]
                    }.bind(this))
                } else {
                    e = e.map(function (d) {
                        return (d / this.options.snap).round() * this.options.snap
                    }.bind(this))
                }
            }
        }
        var b = this.element.style;
        if ((!this.options.constraint) || (this.options.constraint == "horizontal")) {
            b.left = e[0] + "px"
        }
        if ((!this.options.constraint) || (this.options.constraint == "vertical")) {
            b.top = e[1] + "px"
        }
        if (b.visibility == "hidden") {
            b.visibility = ""
        }
    },
    stopScrolling: function () {
        if (this.scrollInterval) {
            clearInterval(this.scrollInterval);
            this.scrollInterval = null;
            Draggables._lastScrollPointer = null
        }
    },
    startScrolling: function (a) {
        if (!(a[0] || a[1])) {
            return
        }
        this.scrollSpeed = [a[0] * this.options.scrollSpeed, a[1] * this.options.scrollSpeed];
        this.lastScrolled = new Date();
        this.scrollInterval = setInterval(this.scroll.bind(this), 10)
    },
    scroll: function () {
        var current = new Date();
        var delta = current - this.lastScrolled;
        this.lastScrolled = current;
        if (this.options.scroll == window) {
            with(this._getWindowScroll(this.options.scroll)) {
                if (this.scrollSpeed[0] || this.scrollSpeed[1]) {
                    var d = delta / 1000;
                    this.options.scroll.scrollTo(left + d * this.scrollSpeed[0], top + d * this.scrollSpeed[1])
                }
            }
        } else {
            this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
            this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000
        }
        Position.prepare();
        Droppables.show(Draggables._lastPointer, this.element);
        Draggables.notify("onDrag", this);
        if (this._isScrollChild) {
            Draggables._lastScrollPointer = Draggables._lastScrollPointer || $A(Draggables._lastPointer);
            Draggables._lastScrollPointer[0] += this.scrollSpeed[0] * delta / 1000;
            Draggables._lastScrollPointer[1] += this.scrollSpeed[1] * delta / 1000;
            if (Draggables._lastScrollPointer[0] < 0) {
                Draggables._lastScrollPointer[0] = 0
            }
            if (Draggables._lastScrollPointer[1] < 0) {
                Draggables._lastScrollPointer[1] = 0
            }
            this.draw(Draggables._lastScrollPointer)
        }
        if (this.options.change) {
            this.options.change(this)
        }
    },
    _getWindowScroll: function (w) {
        var T, L, W, H;
        with(w.document) {
            if (w.document.documentElement && documentElement.scrollTop) {
                T = documentElement.scrollTop;
                L = documentElement.scrollLeft
            } else {
                if (w.document.body) {
                    T = body.scrollTop;
                    L = body.scrollLeft
                }
            }
            if (w.innerWidth) {
                W = w.innerWidth;
                H = w.innerHeight
            } else {
                if (w.document.documentElement && documentElement.clientWidth) {
                    W = documentElement.clientWidth;
                    H = documentElement.clientHeight
                } else {
                    W = body.offsetWidth;
                    H = body.offsetHeight
                }
            }
        }
        return {
            top: T,
            left: L,
            width: W,
            height: H
        }
    }
});
Draggable._dragging = {};
var SortableObserver = Class.create({
    initialize: function (b, a) {
        this.element = $(b);
        this.observer = a;
        this.lastValue = Sortable.serialize(this.element)
    },
    onStart: function () {
        this.lastValue = Sortable.serialize(this.element)
    },
    onEnd: function () {
        Sortable.unmark();
        if (this.lastValue != Sortable.serialize(this.element)) {
            this.observer(this.element)
        }
    }
});
var Sortable = {
    SERIALIZE_RULE: /^[^_\-](?:[A-Za-z0-9\-\_]*)[_](.*)$/,
    sortables: {},
    _findRootElement: function (a) {
        while (a.tagName.toUpperCase() != "BODY") {
            if (a.id && Sortable.sortables[a.id]) {
                return a
            }
            a = a.parentNode
        }
    },
    options: function (a) {
        a = Sortable._findRootElement($(a));
        if (!a) {
            return
        }
        return Sortable.sortables[a.id]
    },
    destroy: function (a) {
        a = $(a);
        var b = Sortable.sortables[a.id];
        if (b) {
            Draggables.removeObserver(b.element);
            b.droppables.each(function (c) {
                Droppables.remove(c)
            });
            b.draggables.invoke("destroy");
            delete Sortable.sortables[b.element.id]
        }
    },
    create: function (c) {
        c = $(c);
        var b = Object.extend({
            element: c,
            tag: "li",
            dropOnEmpty: false,
            tree: false,
            treeTag: "ul",
            overlap: "vertical",
            constraint: "vertical",
            containment: c,
            handle: false,
            only: false,
            delay: 0,
            hoverclass: null,
            ghosting: false,
            quiet: false,
            scroll: false,
            scrollSensitivity: 20,
            scrollSpeed: 15,
            format: this.SERIALIZE_RULE,
            elements: false,
            handles: false,
            onChange: Prototype.emptyFunction,
            onUpdate: Prototype.emptyFunction
        }, arguments[1] || {});
        this.destroy(c);
        var a = {
            revert: true,
            quiet: b.quiet,
            scroll: b.scroll,
            scrollSpeed: b.scrollSpeed,
            scrollSensitivity: b.scrollSensitivity,
            delay: b.delay,
            ghosting: b.ghosting,
            constraint: b.constraint,
            handle: b.handle
        };
        if (b.starteffect) {
            a.starteffect = b.starteffect
        }
        if (b.reverteffect) {
            a.reverteffect = b.reverteffect
        } else {
            if (b.ghosting) {
                a.reverteffect = function (f) {
                    f.style.top = 0;
                    f.style.left = 0
                }
            }
        }
        if (b.endeffect) {
            a.endeffect = b.endeffect
        }
        if (b.zindex) {
            a.zindex = b.zindex
        }
        var d = {
            overlap: b.overlap,
            containment: b.containment,
            tree: b.tree,
            hoverclass: b.hoverclass,
            onHover: Sortable.onHover
        };
        var e = {
            onHover: Sortable.onEmptyHover,
            overlap: b.overlap,
            containment: b.containment,
            hoverclass: b.hoverclass
        };
        Element.cleanWhitespace(c);
        b.draggables = [];
        b.droppables = [];
        if (b.dropOnEmpty || b.tree) {
            Droppables.add(c, e);
            b.droppables.push(c)
        }(b.elements || this.findElements(c, b) || []).each(function (h, f) {
            var g = b.handles ? $(b.handles[f]) : (b.handle ? $(h).select("." + b.handle)[0] : h);
            b.draggables.push(new Draggable(h, Object.extend(a, {
                handle: g
            })));
            Droppables.add(h, d);
            if (b.tree) {
                h.treeNode = c
            }
            b.droppables.push(h)
        });
        if (b.tree) {
            (Sortable.findTreeElements(c, b) || []).each(function (f) {
                Droppables.add(f, e);
                f.treeNode = c;
                b.droppables.push(f)
            })
        }
        this.sortables[c.id] = b;
        Draggables.addObserver(new SortableObserver(c, b.onUpdate))
    },
    findElements: function (b, a) {
        return Element.findChildren(b, a.only, a.tree ? true : false, a.tag)
    },
    findTreeElements: function (b, a) {
        return Element.findChildren(b, a.only, a.tree ? true : false, a.treeTag)
    },
    onHover: function (e, d, a) {
        if (Element.isParent(d, e)) {
            return
        }
        if (a > 0.33 && a < 0.66 && Sortable.options(d).tree) {
            return
        } else {
            if (a > 0.5) {
                Sortable.mark(d, "before");
                if (d.previousSibling != e) {
                    var b = e.parentNode;
                    e.style.visibility = "hidden";
                    d.parentNode.insertBefore(e, d);
                    if (d.parentNode != b) {
                        Sortable.options(b).onChange(e)
                    }
                    Sortable.options(d.parentNode).onChange(e)
                }
            } else {
                Sortable.mark(d, "after");
                var c = d.nextSibling || null;
                if (c != e) {
                    var b = e.parentNode;
                    e.style.visibility = "hidden";
                    d.parentNode.insertBefore(e, c);
                    if (d.parentNode != b) {
                        Sortable.options(b).onChange(e)
                    }
                    Sortable.options(d.parentNode).onChange(e)
                }
            }
        }
    },
    onEmptyHover: function (e, g, h) {
        var j = e.parentNode;
        var a = Sortable.options(g);
        if (!Element.isParent(g, e)) {
            var f;
            var c = Sortable.findElements(g, {
                tag: a.tag,
                only: a.only
            });
            var b = null;
            if (c) {
                var d = Element.offsetSize(g, a.overlap) * (1 - h);
                for (f = 0; f < c.length; f += 1) {
                    if (d - Element.offsetSize(c[f], a.overlap) >= 0) {
                        d -= Element.offsetSize(c[f], a.overlap)
                    } else {
                        if (d - (Element.offsetSize(c[f], a.overlap) / 2) >= 0) {
                            b = f + 1 < c.length ? c[f + 1] : null;
                            break
                        } else {
                            b = c[f];
                            break
                        }
                    }
                }
            }
            g.insertBefore(e, b);
            Sortable.options(j).onChange(e);
            a.onChange(e)
        }
    },
    unmark: function () {
        if (Sortable._marker) {
            Sortable._marker.hide()
        }
    },
    mark: function (b, a) {
        var d = Sortable.options(b.parentNode);
        if (d && !d.ghosting) {
            return
        }
        if (!Sortable._marker) {
            Sortable._marker = ($("dropmarker") || Element.extend(document.createElement("DIV"))).hide().addClassName("dropmarker").setStyle({
                position: "absolute"
            });
            document.getElementsByTagName("body").item(0).appendChild(Sortable._marker)
        }
        var c = Position.cumulativeOffset(b);
        Sortable._marker.setStyle({
            left: c[0] + "px",
            top: c[1] + "px"
        });
        if (a == "after") {
            if (d.overlap == "horizontal") {
                Sortable._marker.setStyle({
                    left: (c[0] + b.clientWidth) + "px"
                })
            } else {
                Sortable._marker.setStyle({
                    top: (c[1] + b.clientHeight) + "px"
                })
            }
        }
        Sortable._marker.show()
    },
    _tree: function (e, b, f) {
        var d = Sortable.findElements(e, b) || [];
        for (var c = 0; c < d.length; ++c) {
            var a = d[c].id.match(b.format);
            if (!a) {
                continue
            }
            var g = {
                id: encodeURIComponent(a ? a[1] : null),
                element: e,
                parent: f,
                children: [],
                position: f.children.length,
                container: $(d[c]).down(b.treeTag)
            };
            if (g.container) {
                this._tree(g.container, b, g)
            }
            f.children.push(g)
        }
        return f
    },
    tree: function (d) {
        d = $(d);
        var c = this.options(d);
        var b = Object.extend({
            tag: c.tag,
            treeTag: c.treeTag,
            only: c.only,
            name: d.id,
            format: c.format
        }, arguments[1] || {});
        var a = {
            id: null,
            parent: null,
            children: [],
            container: d,
            position: 0
        };
        return Sortable._tree(d, b, a)
    },
    _constructIndex: function (b) {
        var a = "";
        do {
            if (b.id) {
                a = "[" + b.position + "]" + a
            }
        } while ((b = b.parent) != null);
        return a
    },
    sequence: function (b) {
        b = $(b);
        var a = Object.extend(this.options(b), arguments[1] || {});
        return $(this.findElements(b, a) || []).map(function (c) {
            return c.id.match(a.format) ? c.id.match(a.format)[1] : ""
        })
    },
    setSequence: function (b, c) {
        b = $(b);
        var a = Object.extend(this.options(b), arguments[2] || {});
        var d = {};
        this.findElements(b, a).each(function (e) {
            if (e.id.match(a.format)) {
                d[e.id.match(a.format)[1]] = [e, e.parentNode]
            }
            e.parentNode.removeChild(e)
        });
        c.each(function (e) {
            var f = d[e];
            if (f) {
                f[1].appendChild(f[0]);
                delete d[e]
            }
        })
    },
    serialize: function (c) {
        c = $(c);
        var b = Object.extend(Sortable.options(c), arguments[1] || {});
        var a = encodeURIComponent((arguments[1] && arguments[1].name) ? arguments[1].name : c.id);
        if (b.tree) {
            return Sortable.tree(c, arguments[1]).children.map(function (d) {
                return [a + Sortable._constructIndex(d) + "[id]=" + encodeURIComponent(d.id)].concat(d.children.map(arguments.callee))
            }).flatten().join("&")
        } else {
            return Sortable.sequence(c, arguments[1]).map(function (d) {
                return a + "[]=" + encodeURIComponent(d)
            }).join("&")
        }
    }
};
Element.isParent = function (b, a) {
    if (!b.parentNode || b == a) {
        return false
    }
    if (b.parentNode == a) {
        return true
    }
    return Element.isParent(b.parentNode, a)
};
Element.findChildren = function (d, b, a, c) {
    if (!d.hasChildNodes()) {
        return null
    }
    c = c.toUpperCase();
    if (b) {
        b = [b].flatten()
    }
    var e = [];
    $A(d.childNodes).each(function (g) {
        if (g.tagName && g.tagName.toUpperCase() == c && (!b || (Element.classNames(g).detect(function (h) {
            return b.include(h)
        })))) {
            e.push(g)
        }
        if (a) {
            var f = Element.findChildren(g, b, a, c);
            if (f) {
                e.push(f)
            }
        }
    });
    return (e.length > 0 ? e.flatten() : [])
};
Element.offsetSize = function (a, b) {
    return a["offset" + ((b == "vertical" || b == "height") ? "Height" : "Width")]
};
if (typeof Effect == "undefined") {
    throw ("controls.js requires including script.aculo.us' effects.js library")
}
var Autocompleter = {};
Autocompleter.Base = Class.create({
    baseInitialize: function (b, c, a) {
        b = $(b);
        this.element = b;
        this.update = $(c);
        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(a)
        } else {
            this.options = a || {}
        }
        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 (d, e) {
            if (!e.style.position || e.style.position == "absolute") {
                e.style.position = "absolute";
                Position.clone(d, e, {
                    setHeight: false,
                    offsetTop: d.offsetHeight
                })
            }
            Effect.Appear(e, {
                duration: 0.15
            })
        };
        this.options.onHide = this.options.onHide ||
        function (d, e) {
            new Effect.Fade(e, {
                duration: 0.15
            })
        };
        if (typeof (this.options.tokens) == "string") {
            this.options.tokens = new Array(this.options.tokens)
        }
        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 (a) {
        if (this.active) {
            switch (a.keyCode) {
            case Event.KEY_TAB:
            case Event.KEY_RETURN:
                this.selectEntry();
                Event.stop(a);
            case Event.KEY_ESC:
                this.hide();
                this.active = false;
                Event.stop(a);
                return;
            case Event.KEY_LEFT:
            case Event.KEY_RIGHT:
                return;
            case Event.KEY_UP:
                this.markPrevious();
                this.render();
                Event.stop(a);
                return;
            case Event.KEY_DOWN:
                this.markNext();
                this.render();
                Event.stop(a);
                return
            }
        } else {
            if (a.keyCode == Event.KEY_TAB || a.keyCode == Event.KEY_RETURN || (Prototype.Browser.WebKit > 0 && a.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 (b) {
        var a = Event.findElement(b, "LI");
        if (this.index != a.autocompleteIndex) {
            this.index = a.autocompleteIndex;
            this.render()
        }
        Event.stop(b)
    },
    onClick: function (b) {
        var a = Event.findElement(b, "LI");
        this.index = a.autocompleteIndex;
        this.selectEntry();
        this.hide()
    },
    onBlur: function (a) {
        setTimeout(this.hide.bind(this), 250);
        this.hasFocus = false;
        this.active = false
    },
    render: function () {
        if (this.entryCount > 0) {
            for (var a = 0; a < this.entryCount; a++) {
                this.index == a ? Element.addClassName(this.getEntry(a), "selected") : Element.removeClassName(this.getEntry(a), "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 (a) {
        return this.update.firstChild.childNodes[a]
    },
    getCurrentEntry: function () {
        return this.getEntry(this.index)
    },
    selectEntry: function () {
        this.active = false;
        this.updateElement(this.getCurrentEntry())
    },
    updateElement: function (f) {
        if (this.options.updateElement) {
            this.options.updateElement(f);
            return
        }
        var d = "";
        if (this.options.select) {
            var a = $(f).select("." + this.options.select) || [];
            if (a.length > 0) {
                d = Element.collectTextNodes(a[0], this.options.select)
            }
        } else {
            d = Element.collectTextNodesIgnoreClass(f, "informal")
        }
        var c = this.getTokenBounds();
        if (c[0] != -1) {
            var e = this.element.value.substr(0, c[0]);
            var b = this.element.value.substr(c[0]).match(/^\s+/);
            if (b) {
                e += b[0]
            }
            this.element.value = e + d + this.element.value.substr(c[1])
        } else {
            this.element.value = d
        }
        this.oldElementValue = this.element.value;
        this.element.focus();
        if (this.options.afterUpdateElement) {
            this.options.afterUpdateElement(this.element, f)
        }
    },
    updateChoices: function (c) {
        if (!this.changed && this.hasFocus) {
            this.update.innerHTML = c;
            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 a = 0; a < this.entryCount; a++) {
                    var b = this.getEntry(a);
                    b.autocompleteIndex = a;
                    this.addObservers(b)
                }
            } 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 (a) {
        Event.observe(a, "mouseover", this.onHover.bindAsEventListener(this));
        Event.observe(a, "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 a = this.getTokenBounds();
        return this.element.value.substring(a[0], a[1]).strip()
    },
    getTokenBounds: function () {
        if (null != this.tokenBounds) {
            return this.tokenBounds
        }
        var e = this.element.value;
        if (e.strip().empty()) {
            return [-1, 0]
        }
        var f = arguments.callee.getFirstDifferencePos(e, this.oldElementValue);
        var h = (f == this.oldElementValue.length ? 1 : 0);
        var d = -1,
            c = e.length;
        var g;
        for (var b = 0, a = this.options.tokens.length; b < a; ++b) {
            g = e.lastIndexOf(this.options.tokens[b], f + h - 1);
            if (g > d) {
                d = g
            }
            g = e.indexOf(this.options.tokens[b], f + h);
            if (-1 != g && g < c) {
                c = g
            }
        }
        return (this.tokenBounds = [d + 1, c])
    }
});
Autocompleter.Base.prototype.getTokenBounds.getFirstDifferencePos = function (c, a) {
    var d = Math.min(c.length, a.length);
    for (var b = 0; b < d; ++b) {
        if (c[b] != a[b]) {
            return b
        }
    }
    return d
};
Ajax.Autocompleter = Class.create(Autocompleter.Base, {
    initialize: function (c, d, b, a) {
        this.baseInitialize(c, d, a);
        this.options.asynchronous = true;
        this.options.onComplete = this.onComplete.bind(this);
        this.options.defaultParams = this.options.parameters || null;
        this.url = b
    },
    getUpdatedChoices: function () {
        this.startIndicator();
        var a = encodeURIComponent(this.options.paramName) + "=" + encodeURIComponent(this.getToken());
        this.options.parameters = this.options.callback ? this.options.callback(this.element, a) : a;
        if (this.options.defaultParams) {
            this.options.parameters += "&" + this.options.defaultParams
        }
        new Ajax.Request(this.url, this.options)
    },
    onComplete: function (a) {
        this.updateChoices(a.responseText)
    }
});
Autocompleter.Local = Class.create(Autocompleter.Base, {
    initialize: function (b, d, c, a) {
        this.baseInitialize(b, d, a);
        this.options.array = c
    },
    getUpdatedChoices: function () {
        this.updateChoices(this.options.selector(this))
    },
    setOptions: function (a) {
        this.options = Object.extend({
            choices: 10,
            partialSearch: true,
            partialChars: 2,
            ignoreCase: true,
            fullSearch: false,
            selector: function (b) {
                var d = [];
                var c = [];
                var h = b.getToken();
                var g = 0;
                for (var e = 0; e < b.options.array.length && d.length < b.options.choices; e++) {
                    var f = b.options.array[e];
                    var j = b.options.ignoreCase ? f.toLowerCase().indexOf(h.toLowerCase()) : f.indexOf(h);
                    while (j != -1) {
                        if (j == 0 && f.length != h.length) {
                            d.push("<li><strong>" + f.substr(0, h.length) + "</strong>" + f.substr(h.length) + "</li>");
                            break
                        } else {
                            if (h.length >= b.options.partialChars && b.options.partialSearch && j != -1) {
                                if (b.options.fullSearch || /\s/.test(f.substr(j - 1, 1))) {
                                    c.push("<li>" + f.substr(0, j) + "<strong>" + f.substr(j, h.length) + "</strong>" + f.substr(j + h.length) + "</li>");
                                    break
                                }
                            }
                        }
                        j = b.options.ignoreCase ? f.toLowerCase().indexOf(h.toLowerCase(), j + 1) : f.indexOf(h, j + 1)
                    }
                }
                if (c.length) {
                    d = d.concat(c.slice(0, b.options.choices - d.length))
                }
                return "<ul>" + d.join("") + "</ul>"
            }
        }, a || {})
    }
});
Field.scrollFreeActivate = function (a) {
    setTimeout(function () {
        Field.activate(a)
    }, 1)
};
Ajax.InPlaceEditor = Class.create({
    initialize: function (c, b, a) {
        this.url = b;
        this.element = c = $(c);
        this.prepareOptions();
        this._controls = {};
        arguments.callee.dealWithDeprecatedOptions(a);
        Object.extend(this.options, a || {});
        if (!this.options.formId && this.element.id) {
            this.options.formId = this.element.id + "-inplaceeditor";
            if ($(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 (a) {
        if (!this._editing || a.ctrlKey || a.altKey || a.shiftKey) {
            return
        }
        if (Event.KEY_ESC == a.keyCode) {
            this.handleFormCancellation(a)
        } else {
            if (Event.KEY_RETURN == a.keyCode) {
                this.handleFormSubmission(a)
            }
        }
    },
    createControl: function (g, c, b) {
        var e = this.options[g + "Control"];
        var f = this.options[g + "Text"];
        if ("button" == e) {
            var a = document.createElement("input");
            a.type = "submit";
            a.value = f;
            a.className = "editor_" + g + "_button";
            if ("cancel" == g) {
                a.onclick = this._boundCancelHandler
            }
            this._form.appendChild(a);
            this._controls[g] = a
        } else {
            if ("link" == e) {
                var d = document.createElement("a");
                d.href = "#";
                d.appendChild(document.createTextNode(f));
                d.onclick = "cancel" == g ? this._boundCancelHandler : this._boundSubmitHandler;
                d.className = "editor_" + g + "_link";
                if (b) {
                    d.className += " " + b
                }
                this._form.appendChild(d);
                this._controls[g] = d
            }
        }
    },
    createEditField: function () {
        var c = (this.options.loadTextURL ? this.options.loadingText : this.getText());
        var b;
        if (1 >= this.options.rows && !/\r|\n/.test(this.getText())) {
            b = document.createElement("input");
            b.type = "text";
            var a = this.options.size || this.options.cols || 0;
            if (0 < a) {
                b.size = a
            }
        } else {
            b = document.createElement("textarea");
            b.rows = (1 >= this.options.rows ? this.options.autoRows : this.options.rows);
            b.cols = this.options.cols || 40
        }
        b.name = this.options.paramName;
        b.value = c;
        b.className = "editor_field";
        if (this.options.submitOnBlur) {
            b.onblur = this._boundSubmitHandler
        }
        this._controls.editor = b;
        if (this.options.loadTextURL) {
            this.loadExternalText()
        }
        this._form.appendChild(this._controls.editor)
    },
    createForm: function () {
        var b = this;

        function a(d, e) {
            var c = b.options["text" + d + "Controls"];
            if (!c || e === false) {
                return
            }
            b._form.appendChild(document.createTextNode(c))
        }
        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)
        }
        a("Before", this.options.okControl || this.options.cancelControl);
        this.createControl("ok", this._boundSubmitHandler);
        a("Between", this.options.okControl && this.options.cancelControl);
        this.createControl("cancel", this._boundCancelHandler, "editor_cancel");
        a("After", this.options.okControl || this.options.cancelControl)
    },
    destroy: function () {
        if (this._oldInnerHTML) {
            this.element.innerHTML = this._oldInnerHTML
        }
        this.leaveEditMode();
        this.unregisterListeners()
    },
    enterEditMode: function (a) {
        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 (a) {
            Event.stop(a)
        }
    },
    enterHover: function (a) {
        if (this.options.hoverClassName) {
            this.element.addClassName(this.options.hoverClassName)
        }
        if (this._saving) {
            return
        }
        this.triggerCallback("onEnterHover")
    },
    getText: function () {
        return this.element.innerHTML.unescapeHTML()
    },
    handleAJAXFailure: function (a) {
        this.triggerCallback("onFailure", a);
        if (this._oldInnerHTML) {
            this.element.innerHTML = this._oldInnerHTML;
            this._oldInnerHTML = null
        }
    },
    handleFormCancellation: function (a) {
        this.wrapUp();
        if (a) {
            Event.stop(a)
        }
    },
    handleFormSubmission: function (d) {
        var b = this._form;
        var c = $F(this._controls.editor);
        this.prepareSubmission();
        var f = this.options.callback(b, c) || "";
        if (Object.isString(f)) {
            f = f.toQueryParams()
        }
        f.editorId = this.element.id;
        if (this.options.htmlResponse) {
            var a = Object.extend({
                evalScripts: true
            }, this.options.ajaxOptions);
            Object.extend(a, {
                parameters: f,
                onComplete: this._boundWrapperHandler,
                onFailure: this._boundFailureHandler
            });
            new Ajax.Updater({
                success: this.element
            }, this.url, a)
        } else {
            var a = Object.extend({
                method: "get"
            }, this.options.ajaxOptions);
            Object.extend(a, {
                parameters: f,
                onComplete: this._boundWrapperHandler,
                onFailure: this._boundFailureHandler
            });
            new Ajax.Request(this.url, a)
        }
        if (d) {
            Event.stop(d)
        }
    },
    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 (a) {
        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 a = Object.extend({
            method: "get"
        }, this.options.ajaxOptions);
        Object.extend(a, {
            parameters: "editorId=" + encodeURIComponent(this.element.id),
            onComplete: Prototype.emptyFunction,
            onSuccess: function (c) {
                this._form.removeClassName(this.options.loadingClassName);
                var b = c.responseText;
                if (this.options.stripLoadedTextTags) {
                    b = b.stripTags()
                }
                this._controls.editor.value = b;
                this._controls.editor.disabled = false;
                this.postProcessEditField()
            }.bind(this),
            onFailure: this._boundFailureHandler
        });
        new Ajax.Request(this.options.loadTextURL, a)
    },
    postProcessEditField: function () {
        var a = this.options.fieldPostCreation;
        if (a) {
            $(this._controls.editor)["focus" == a ? "focus" : "activate"]()
        }
    },
    prepareOptions: function () {
        this.options = Object.clone(Ajax.InPlaceEditor.DefaultOptions);
        Object.extend(this.options, Ajax.InPlaceEditor.DefaultCallbacks);
        [this._extraDefaultOptions].flatten().compact().each(function (a) {
            Object.extend(this.options, a)
        }.bind(this))
    },
    prepareSubmission: function () {
        this._saving = true;
        this.removeForm();
        this.leaveHover();
        this.showSaving()
    },
    registerListeners: function () {
        this._listeners = {};
        var a;
        $H(Ajax.InPlaceEditor.Listeners).each(function (b) {
            a = this[b.value].bind(this);
            this._listeners[b.key] = a;
            if (!this.options.externalControlOnly) {
                this.element.observe(b.key, a)
            }
            if (this.options.externalControl) {
                this.options.externalControl.observe(b.key, a)
            }
        }.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 (b, a) {
        if ("function" == typeof this.options[b]) {
            this.options[b](this, a)
        }
    },
    unregisterListeners: function () {
        $H(this._listeners).each(function (a) {
            if (!this.options.externalControlOnly) {
                this.element.stopObserving(a.key, a.value)
            }
            if (this.options.externalControl) {
                this.options.externalControl.stopObserving(a.key, a.value)
            }
        }.bind(this))
    },
    wrapUp: function (a) {
        this.leaveEditMode();
        this._boundComplete(a, this.element)
    }
});
Object.extend(Ajax.InPlaceEditor.prototype, {
    dispose: Ajax.InPlaceEditor.prototype.destroy
});
Ajax.InPlaceCollectionEditor = Class.create(Ajax.InPlaceEditor, {
    initialize: function ($super, c, b, a) {
        this._extraDefaultOptions = Ajax.InPlaceCollectionEditor.DefaultOptions;
        $super(c, b, a)
    },
    createEditField: function () {
        var a = document.createElement("select");
        a.name = this.options.paramName;
        a.size = 1;
        this._controls.editor = a;
        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)) {
                    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 (b) {
        this._controls.editor.disabled = true;
        var a = this._controls.editor.firstChild;
        if (!a) {
            a = document.createElement("option");
            a.value = "";
            this._controls.editor.appendChild(a);
            a.selected = true
        }
        a.update((b || "").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 a = Object.extend({
            method: "get"
        }, this.options.ajaxOptions);
        Object.extend(a, {
            parameters: "editorId=" + encodeURIComponent(this.element.id),
            onComplete: Prototype.emptyFunction,
            onSuccess: function (b) {
                this._text = b.responseText.strip();
                this.buildOptionList()
            }.bind(this),
            onFailure: this.onFailure
        });
        new Ajax.Request(this.options.loadTextURL, a)
    },
    buildOptionList: function () {
        this._form.removeClassName(this.options.loadingClassName);
        this._collection = this._collection.map(function (d) {
            return 2 === d.length ? d : [d, d].flatten()
        });
        var b = ("value" in this.options) ? this.options.value : this._text;
        var a = this._collection.any(function (d) {
            return d[0] == b
        }.bind(this));
        this._controls.editor.update("");
        var c;
        this._collection.each(function (e, d) {
            c = document.createElement("option");
            c.value = e[0];
            c.selected = a ? e[0] == b : 0 == d;
            c.appendChild(document.createTextNode(e[1]));
            this._controls.editor.appendChild(c)
        }.bind(this));
        this._controls.editor.disabled = false;
        Field.scrollFreeActivate(this._controls.editor)
    }
});
Ajax.InPlaceEditor.prototype.initialize.dealWithDeprecatedOptions = function (a) {
    if (!a) {
        return
    }
    function b(c, d) {
        if (c in a || d === undefined) {
            return
        }
        a[c] = d
    }
    b("cancelControl", (a.cancelLink ? "link" : (a.cancelButton ? "button" : a.cancelLink == a.cancelButton == false ? false : undefined)));
    b("okControl", (a.okLink ? "link" : (a.okButton ? "button" : a.okLink == a.okButton == false ? false : undefined)));
    b("highlightColor", a.highlightcolor);
    b("highlightEndColor", a.highlightendcolor)
};
Object.extend(Ajax.InPlaceEditor, {
    DefaultOptions: {
        ajaxOptions: {},
        autoRows: 3,
        cancelControl: "link",
        cancelText: "cancel",
        clickToEditText: "Click to edit",
        externalControl: null,
        externalControlOnly: false,
        fieldPostCreation: "activate",
        formClassName: "inplaceeditor-form",
        formId: null,
        highlightColor: "#ffff99",
        highlightEndColor: "#ffffff",
        hoverClassName: "",
        htmlResponse: true,
        loadingClassName: "inplaceeditor-loading",
        loadingText: "Loading...",
        okControl: "button",
        okText: "ok",
        paramName: "value",
        rows: 1,
        savingClassName: "inplaceeditor-saving",
        savingText: "Saving...",
        size: 0,
        stripLoadedTextTags: false,
        submitOnBlur: false,
        textAfterControls: "",
        textBeforeControls: "",
        textBetweenControls: ""
    },
    DefaultCallbacks: {
        callback: function (a) {
            return Form.serialize(a)
        },
        onComplete: function (b, a) {
            new Effect.Highlight(a, {
                startcolor: this.options.highlightColor,
                keepBackgroundImage: true
            })
        },
        onEnterEditMode: null,
        onEnterHover: function (a) {
            a.element.style.backgroundColor = a.options.highlightColor;
            if (a._effect) {
                a._effect.cancel()
            }
        },
        onFailure: function (b, a) {
            alert("Error communication with the server: " + b.responseText.stripTags())
        },
        onFormCustomization: null,
        onLeaveEditMode: null,
        onLeaveHover: function (a) {
            a._effect = new Effect.Highlight(a.element, {
                startcolor: a.options.highlightColor,
                endcolor: a.options.highlightEndColor,
                restorecolor: a._originalBackground,
                keepBackgroundImage: true
            })
        }
    },
    Listeners: {
        click: "enterEditMode",
        keydown: "checkForEscapeOrReturn",
        mouseover: "enterHover",
        mouseout: "leaveHover"
    }
});
Ajax.InPlaceCollectionEditor.DefaultOptions = {
    loadingCollectionText: "Loading options..."
};
Form.Element.DelayedObserver = Class.create({
    initialize: function (b, a, c) {
        this.delay = a || 0.5;
        this.element = $(b);
        this.callback = c;
        this.timer = null;
        this.lastValue = $F(this.element);
        Event.observe(this.element, "keyup", this.delayedListener.bindAsEventListener(this))
    },
    delayedListener: function (a) {
        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))
    }
});
if (!Control) {
    var Control = {}
}
Control.Slider = Class.create({
    initialize: function (d, a, b) {
        var c = this;
        if (Object.isArray(d)) {
            this.handles = d.collect(function (f) {
                return $(f)
            })
        } else {
            this.handles = [$(d)]
        }
        this.track = $(a);
        this.options = b || {};
        this.axis = this.options.axis || "horizontal";
        this.increment = this.options.increment || 1;
        this.step = parseInt(this.options.step || "1");
        this.range = this.options.range || $R(0, 1);
        this.value = 0;
        this.values = this.handles.map(function () {
            return 0
        });
        this.spans = this.options.spans ? this.options.spans.map(function (e) {
            return $(e)
        }) : false;
        this.options.startSpan = $(this.options.startSpan || null);
        this.options.endSpan = $(this.options.endSpan || null);
        this.restricted = this.options.restricted || false;
        this.maximum = this.options.maximum || this.range.end;
        this.minimum = this.options.minimum || this.range.start;
        this.alignX = parseInt(this.options.alignX || "0");
        this.alignY = parseInt(this.options.alignY || "0");
        this.trackLength = this.maximumOffset() - this.minimumOffset();
        this.handleLength = this.isVertical() ? (this.handles[0].offsetHeight != 0 ? this.handles[0].offsetHeight : this.handles[0].style.height.replace(/px$/, "")) : (this.handles[0].offsetWidth != 0 ? this.handles[0].offsetWidth : this.handles[0].style.width.replace(/px$/, ""));
        this.active = false;
        this.dragging = false;
        this.disabled = false;
        if (this.options.disabled) {
            this.setDisabled()
        }
        this.allowedValues = this.options.values ? this.options.values.sortBy(Prototype.K) : false;
        if (this.allowedValues) {
            this.minimum = this.allowedValues.min();
            this.maximum = this.allowedValues.max()
        }
        this.eventMouseDown = this.startDrag.bindAsEventListener(this);
        this.eventMouseUp = this.endDrag.bindAsEventListener(this);
        this.eventMouseMove = this.update.bindAsEventListener(this);
        this.handles.each(function (f, e) {
            e = c.handles.length - 1 - e;
            c.setValue(parseFloat((Object.isArray(c.options.sliderValue) ? c.options.sliderValue[e] : c.options.sliderValue) || c.range.start), e);
            f.makePositioned().observe("mousedown", c.eventMouseDown)
        });
        this.track.observe("mousedown", this.eventMouseDown);
        document.observe("mouseup", this.eventMouseUp);
        document.observe("mousemove", this.eventMouseMove);
        this.initialized = true
    },
    dispose: function () {
        var a = this;
        Event.stopObserving(this.track, "mousedown", this.eventMouseDown);
        Event.stopObserving(document, "mouseup", this.eventMouseUp);
        Event.stopObserving(document, "mousemove", this.eventMouseMove);
        this.handles.each(function (b) {
            Event.stopObserving(b, "mousedown", a.eventMouseDown)
        })
    },
    setDisabled: function () {
        this.disabled = true
    },
    setEnabled: function () {
        this.disabled = false
    },
    getNearestValue: function (a) {
        if (this.allowedValues) {
            if (a >= this.allowedValues.max()) {
                return (this.allowedValues.max())
            }
            if (a <= this.allowedValues.min()) {
                return (this.allowedValues.min())
            }
            var c = Math.abs(this.allowedValues[0] - a);
            var b = this.allowedValues[0];
            this.allowedValues.each(function (d) {
                var e = Math.abs(d - a);
                if (e <= c) {
                    b = d;
                    c = e
                }
            });
            return b
        }
        if (a > this.range.end) {
            return this.range.end
        }
        if (a < this.range.start) {
            return this.range.start
        }
        return a
    },
    setValue: function (b, a) {
        if (!this.active) {
            this.activeHandleIdx = a || 0;
            this.activeHandle = this.handles[this.activeHandleIdx];
            this.updateStyles()
        }
        a = a || this.activeHandleIdx || 0;
        if (this.initialized && this.restricted) {
            if ((a > 0) && (b < this.values[a - 1])) {
                b = this.values[a - 1]
            }
            if ((a < (this.handles.length - 1)) && (b > this.values[a + 1])) {
                b = this.values[a + 1]
            }
        }
        b = this.getNearestValue(b);
        this.values[a] = b;
        this.value = this.values[0];
        this.handles[a].style[this.isVertical() ? "top" : "left"] = this.translateToPx(b);
        this.drawSpans();
        if (!this.dragging || !this.event) {
            this.updateFinished()
        }
    },
    setValueBy: function (b, a) {
        this.setValue(this.values[a || this.activeHandleIdx || 0] + b, a || this.activeHandleIdx || 0)
    },
    translateToPx: function (a) {
        return Math.round(((this.trackLength - this.handleLength) / (this.range.end - this.range.start)) * (a - this.range.start)) + "px"
    },
    translateToValue: function (a) {
        return ((a / (this.trackLength - this.handleLength) * (this.range.end - this.range.start)) + this.range.start)
    },
    getRange: function (b) {
        var a = this.values.sortBy(Prototype.K);
        b = b || 0;
        return $R(a[b], a[b + 1])
    },
    minimumOffset: function () {
        return (this.isVertical() ? this.alignY : this.alignX)
    },
    maximumOffset: function () {
        return (this.isVertical() ? (this.track.offsetHeight != 0 ? this.track.offsetHeight : this.track.style.height.replace(/px$/, "")) - this.alignY : (this.track.offsetWidth != 0 ? this.track.offsetWidth : this.track.style.width.replace(/px$/, "")) - this.alignX)
    },
    isVertical: function () {
        return (this.axis == "vertical")
    },
    drawSpans: function () {
        var a = this;
        if (this.spans) {
            $R(0, this.spans.length - 1).each(function (b) {
                a.setSpan(a.spans[b], a.getRange(b))
            })
        }
        if (this.options.startSpan) {
            this.setSpan(this.options.startSpan, $R(0, this.values.length > 1 ? this.getRange(0).min() : this.value))
        }
        if (this.options.endSpan) {
            this.setSpan(this.options.endSpan, $R(this.values.length > 1 ? this.getRange(this.spans.length - 1).max() : this.value, this.maximum))
        }
    },
    setSpan: function (b, a) {
        if (this.isVertical()) {
            b.style.top = this.translateToPx(a.start);
            b.style.height = this.translateToPx(a.end - a.start + this.range.start)
        } else {
            b.style.left = this.translateToPx(a.start);
            b.style.width = this.translateToPx(a.end - a.start + this.range.start)
        }
    },
    updateStyles: function () {
        this.handles.each(function (a) {
            Element.removeClassName(a, "selected")
        });
        Element.addClassName(this.activeHandle, "selected")
    },
    startDrag: function (c) {
        if (Event.isLeftClick(c)) {
            if (!this.disabled) {
                this.active = true;
                var d = Event.element(c);
                var e = [Event.pointerX(c), Event.pointerY(c)];
                var a = d;
                if (a == this.track) {
                    var b = Position.cumulativeOffset(this.track);
                    this.event = c;
                    this.setValue(this.translateToValue((this.isVertical() ? e[1] - b[1] : e[0] - b[0]) - (this.handleLength / 2)));
                    var b = Position.cumulativeOffset(this.activeHandle);
                    this.offsetX = (e[0] - b[0]);
                    this.offsetY = (e[1] - b[1])
                } else {
                    while ((this.handles.indexOf(d) == -1) && d.parentNode) {
                        d = d.parentNode
                    }
                    if (this.handles.indexOf(d) != -1) {
                        this.activeHandle = d;
                        this.activeHandleIdx = this.handles.indexOf(this.activeHandle);
                        this.updateStyles();
                        var b = Position.cumulativeOffset(this.activeHandle);
                        this.offsetX = (e[0] - b[0]);
                        this.offsetY = (e[1] - b[1])
                    }
                }
            }
            Event.stop(c)
        }
    },
    update: function (a) {
        if (this.active) {
            if (!this.dragging) {
                this.dragging = true
            }
            this.draw(a);
            if (Prototype.Browser.WebKit) {
                window.scrollBy(0, 0)
            }
            Event.stop(a)
        }
    },
    draw: function (b) {
        var c = [Event.pointerX(b), Event.pointerY(b)];
        var a = Position.cumulativeOffset(this.track);
        c[0] -= this.offsetX + a[0];
        c[1] -= this.offsetY + a[1];
        this.event = b;
        this.setValue(this.translateToValue(this.isVertical() ? c[1] : c[0]));
        if (this.initialized && this.options.onSlide) {
            this.options.onSlide(this.values.length > 1 ? this.values : this.value, this)
        }
    },
    endDrag: function (a) {
        if (this.active && this.dragging) {
            this.finishDrag(a, true);
            Event.stop(a)
        }
        this.active = false;
        this.dragging = false
    },
    finishDrag: function (a, b) {
        this.active = false;
        this.dragging = false;
        this.updateFinished()
    },
    updateFinished: function () {
        if (this.initialized && this.options.onChange) {
            this.options.onChange(this.values.length > 1 ? this.values : this.value, this)
        }
        this.event = null
    }
});
Sound = {
    tracks: {},
    _enabled: true,
    template: new Template('<embed style="height:0" id="sound_#{track}_#{id}" src="#{url}" loop="false" autostart="true" hidden="true"/>'),
    enable: function () {
        Sound._enabled = true
    },
    disable: function () {
        Sound._enabled = false
    },
    play: function (b) {
        if (!Sound._enabled) {
            return
        }
        var a = Object.extend({
            track: "global",
            url: b,
            replace: false
        }, arguments[1] || {});
        if (a.replace && this.tracks[a.track]) {
            $R(0, this.tracks[a.track].id).each(function (d) {
                var c = $("sound_" + a.track + "_" + d);
                c.Stop && c.Stop();
                c.remove()
            });
            this.tracks[a.track] = null
        }
        if (!this.tracks[a.track]) {
            this.tracks[a.track] = {
                id: 0
            }
        } else {
            this.tracks[a.track].id++
        }
        a.id = this.tracks[a.track].id;
        $$("body")[0].insert(Prototype.Browser.IE ? new Element("bgsound", {
            id: "sound_" + a.track + "_" + a.id,
            src: a.url,
            loop: 1,
            autostart: true
        }) : Sound.template.evaluate(a))
    }
};
if (Prototype.Browser.Gecko && navigator.userAgent.indexOf("Win") > 0) {
    if (navigator.plugins && $A(navigator.plugins).detect(function (a) {
        return a.name.indexOf("QuickTime") != -1
    })) {
        Sound.template = new Template('<object id="sound_#{track}_#{id}" width="0" height="0" type="audio/mpeg" data="#{url}"/>')
    } else {
        Sound.play = function () {}
    }
};