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

var Prototype = {
  Version: '1.6.0.2',

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

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

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

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

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


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

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

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

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

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

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

    klass.prototype.constructor = klass;

    return klass;
  }
};

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

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

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

    return this;
  }
};

var Abstract = { };

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    return returnValue;
  }
};

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

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

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

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

    this.registerCallback();
  },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    return camelized;
  },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

var $break = { };

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Array.from = $A;

Object.extend(Array.prototype, Enumerable);

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  activeRequestCount: 0
};

Ajax.Responders = {
  responders: [],

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

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

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

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

Object.extend(Ajax.Responders, Enumerable);

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

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

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

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

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

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

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

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

    this.parameters = params;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  status:      0,
  statusText: '',

  getStatus: Ajax.Request.prototype.getStatus,

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

  getHeader: Ajax.Request.prototype.getHeader,

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

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

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

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

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

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

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

    $super(url, options);
  },

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

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

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

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

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

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

    this.start();
  },

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

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

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

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

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

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

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

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

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

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

Element.cache = { };

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

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

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

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

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

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

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

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

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

    var content, insert, tagName, childNodes;

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

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

      content = Object.toHTML(content);

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

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

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

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

    return element;
  },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    return element;
  },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    return $(document.body);
  },

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

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

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

    } while (element = element.offsetParent);

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

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

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

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

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

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

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

Element.Methods.identify.counter = 1;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  Element._attributeTranslations.has = {};

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

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

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

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

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

    return element;
  };

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Element.Methods.ByTag = { };

Object.extend(Element, Element.Methods);

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

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

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

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

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

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

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

    element._extendedByPrototype = Prototype.emptyFunction;
    return element;

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    var e = this.expression;

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

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

    return true;
  },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    return match;
  },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

    return matchingInputs;
  },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  cache: { },

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

      return element;
    },

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

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

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

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

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

      destroyWrapper(id, eventName, handler);

      return element;
    },

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

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

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

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

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

Object.extend(Event, Event.Methods);

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

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

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

  var timer;

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

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

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

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

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

Hash.toQueryString = Object.toQueryString;

var Toggle = { display: Element.toggle };

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

  cumulativeOffset: Element.Methods.cumulativeOffset,

  positionedOffset: Element.Methods.positionedOffset,

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

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

  realOffset: Element.Methods.cumulativeScrollOffset,

  offsetParent: Element.Methods.getOffsetParent,

  page: Element.Methods.viewportOffset,

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Element.addMethods();
// ------------------------ 10util.js starts here -----------------------------
/*              Utility functions                    */

var isIE6 = false;
var isIE7 = false;
/*@cc_on @*/

/*@if (@_jscript_version <= 5.6)
 // The above conditional compilation for IE is equivalent to
 // a conditional comment in HTML of 'if lte IE 6'
 isIE6 = true;
 /*@end @*/

/*@if (@_jscript_version > 5.6)
 // The above conditional compilation for IE is equivalent to
 // a conditional comment in HTML of 'if lte IE 6'
 isIE7 = true;
 /*@end @*/

var loadEventList = [];
function addEvent(obj, eventType, fn){

	if (typeof obj === "string") {
		obj = document.getElementById(obj);
	}

    /* adds an eventListener for browsers which support it
     Written by Scott Andrew: nice one, Scott */
    if (eventType === "load") {
        //hack me
        loadEventList.addLoadEvent(fn);
        return true;
    }
	if (!obj) {
		return null;
	}
    
    if (obj.addEventListener) {
        obj.addEventListener(eventType, fn, false);
        return true;
    }
    else 
        if (obj.attachEvent) {
            var r = obj.attachEvent("on" + eventType, fn);
            return r;
        }
        else {
            return false;
        }
}


var loadEventList = [];
loadEventList.addLoadEvent = function(fn){
    loadEventList[loadEventList.length] = fn;
};

loadEventList.hasFired = false;
loadEventList.fireLoadEvents = function(){
    for (var i = 0; i < loadEventList.length; i++) {
        loadEventList[i]();
    }
    loadEventList.hasFired = true;
};

/* the following is a hack to replicate DOMContentLoaded in browsers
 other than Firefox.  It is basically copied from
 http://dean.edwards.name/weblog/2006/06/again/
 */
if (/WebKit/i.test(navigator.userAgent)) { // Safari
    var _timer = setInterval(function(){
        if (/loaded|complete/.test(document.readyState)) {
            clearInterval(_timer);
            loadEventList.fireLoadEvents(); // call the onload handler
        }
    }, 100);
}
else 
    if (document.addEventListener) {
        document.addEventListener("DOMContentLoaded", loadEventList.fireLoadEvents, false);
    }
    else {
    // IE HACK
    /*@cc_on @*/
    /*@if (@_win32)
     document.write("<script id='__ie_onload' defer='defer' src='//:'><\/script>");
     var script = document.getElementById("__ie_onload");
     script.onreadystatechange = function() {
	     if (this.readyState == "complete") {
		     loadEventList.fireLoadEvents(); // call the onload handler
	     }
     };
     /*@end @*/
    }

var safeLoadEventList = [];
var isSafari2 = function () {
	 var userAgentNumber = RegExp("( Safari/)([^ ]+)").exec(navigator.userAgent);
	 if (!userAgentNumber || userAgentNumber.length < 3) {
	 	return false;
	 }
	 var mainVersionNumber = userAgentNumber[2].split('.')[0];
	 if (parseInt(mainVersionNumber) > 500) { //This is Safari 3
	 	return false;
	 }
	 return true;
}
function addSafeLoadEvent(fn) {
	if (!(isIE6 || isIE7)) {
		addEvent(document, 'load', fn);
		return true;
	} else {
		// This is IE6 or 7 and therefore can't have document.body.appendChilds or innerHTMLs until the whole page has loaded.
		// See http://support.microsoft.com/kb/927917 for more information
		safeLoadEventList.push(fn);
		return true;
	}
}

safeLoadEventList.hasFired = false;
safeLoadEventList.fireLoadEvents = function() {
    for (var i = 0; i < safeLoadEventList.length; i++) {
        safeLoadEventList[i]();
    }
    safeLoadEventList.hasFired = true;
};

if ((isIE6 || isIE7)) {
	window.attachEvent("onload", safeLoadEventList.fireLoadEvents);
}

function importScript(src, onloadCallback){
	var scriptElem = document.createElement('script');
	scriptElem.setAttribute('src',src);
	scriptElem.setAttribute('type','text/javascript');
	
	if (onloadCallback) {
		scriptElem.onreadystatechange = function () {
			if (scriptElem.readyState === 'loaded') {
				onloadCallback();
			}
		};
		scriptElem.onload = onloadCallback;
	}

	document.getElementsByTagName('head')[0].appendChild(scriptElem);
}


function openGalleryPopup(url, height){
    var galleryWidth = 830;
    var leftPos = 0;
    if (screen.availWidth > galleryWidth) {
        leftPos = Math.round((screen.availWidth - galleryWidth) / 2);
     }
    var newWindow = window.open(url, '_blank', 'resizable=yes,scrollbars=yes,location=yes,toolbar=yes,status=no,top=0,screenY=0,left=' + leftPos + ',screenX=' + leftPos + ',height=' + height + ',width=' + galleryWidth);
    return false;
}

function openScorePopup(url){
 	var height= 335;
	var width = 420;
    var leftPos = 0;
    window.open(url, '_blank', 'resizable=yes,scrollbars=yes,location=no,toolbar=no,status=no,top=0,screenY=0,left=' + leftPos + ',screenX=' + leftPos + ',height=' + height + ',width=' + width);
    return false;
}

function popUpNewWindow(url,width,height) {
	newwindow=window.open(url,'sponsor','height=' + height + ',width=' + width + ',scrollbars=yes,location=yes,toolbar=yes,status=yes,resizable=yes');
	if (window.focus) {newwindow.focus()}
	return false;
}

function forEachElementOf(list, doThis){
    var listLength = list.length;
    for (var i = 0; i < listLength; i++) {
        doThis(list[i], i);
    }
}

function readCookie(name) {
    var nameEQ = name + "=";
    var cookieArray = document.cookie.split(';');
	
    for (var i = 0; i < cookieArray.length; i++) {
        var cookie = cookieArray[i];
		
        while (cookie.charAt(0) == ' ') {
			cookie = cookie.substring(1, cookie.length);
		}
			
        if (cookie.indexOf(nameEQ) === 0) {
			return cookie.substring(nameEQ.length, cookie.length);
		}
    }
	
    return null;
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else var expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function isExternalSystemOn(system){

    var extSystems = readCookie("GU_EXT_SYS");
    if (extSystems !== null) {
        return extSystems.match(system) === null;
    }
    return true;
}

function isUserLoggedIntoRegPss() {
	return readCookie("GU_ME") != null;
}

function generateScriptTag(src){
    document.write('<script type="text/javascript" src="' + src + '"></scr' + 'ipt>');
    document.close();
}

function getScrollPosition(){
    var scrollX, scrollY;
    if (self.pageYOffset) {
        scrollX = self.pageXOffset;
        scrollY = self.pageYOffset;
    }
    else 
        if (document.documentElement && document.documentElement.scrollTop) {
            scrollX = document.documentElement.scrollLeft;
            scrollY = document.documentElement.scrollTop;
        }
        else 
            if (document.body) {
                scrollX = document.body.scrollLeft;
                scrollY = document.body.scrollTop;
            }
    return {
        x: scrollX,
        y: scrollY
    };
}

function getCenterPosition(){
    var centerX, centerY;
    if (self.innerHeight) {
        centerX = self.innerWidth;
        centerY = self.innerHeight;
    }
    else 
        if (document.documentElement && document.documentElement.clientHeight) {
            centerX = document.documentElement.clientWidth;
            centerY = document.documentElement.clientHeight;
        }
        else 
            if (document.body) {
                centerX = document.body.clientWidth;
                centerY = document.body.clientHeight;
            }
    return {
        x: centerX,
        y: centerY
    };
}

function getScrollAndCenterPosition(){
    var scroll = getScrollPosition();
    var center = getCenterPosition();
    return {
        scrollX: scroll.x,
        scrollY: scroll.y,
        centerX: center.x,
        centerY: center.y
    };
}

function fixFirefoxIncrementalReflowBug() {
	if (window.getComputedStyle) {
		// This is only required for Firefox 2, where the incremental rendering sometimes gets messed
		// up. Call this to force a document reflow. This bug is (apparently) fixed in FF3.
		var body = document.getElementsByTagName('body')[0];
		var bodyHeight = window.getComputedStyle(body,'').getPropertyValue('height');
		body.style.height = bodyHeight;
		window.setTimeout(function () {body.style.height = 'auto'},100);
	}
}

function GUopenParent(target) {
	if (window.opener) {
		window.opener.location=target;
	} else {
		location=target;
	}
}

function classNameRegex(cl) {
	return new RegExp("( |^)" + cl + "( |$)")
}

function removeClassName(el, className) {
	return el.className.replace(classNameRegex(className), " ");
}

function elementHasClassName(el, className) {
	if (el.hasClassName) {
		return el.hasClassName(className);
	}
	return classNameRegex(className).test(el.className);
}

function getElementsByClassNameAndTagName(className, node, tagName) {
	if (!className) {
		return [];
	}
	var nodeRoot = node ? node : document;
	var tag = tagName ? tagName : '*';
	var elementsToTest = nodeRoot.getElementsByTagName(tag);
	var matchingElements = [];
	for (var i = 0; i < elementsToTest.length; i++) {
		if (elementHasClassName(elementsToTest[i], className)) {
			matchingElements.push(elementsToTest[i]);
		}		
	}
	return matchingElements;
}

function getAncestorOfType(object, tagType) {
	return (object.tagName.toLowerCase() === tagType) ? object : getAncestorOfType(object.parentNode, tagType);
}

// ------------------------- 10util.js ends here ------------------------------
// -------------------- 11image-utils.js starts here ----------------------------

var applyImageMaskImmediate;
var applyFullScreenImageMask;
var removeFullScreenImageMask;
var updateVisibilityOfElementsThatRuinIE6Filters;
var ensureElementHasLayoutInIE6;

(function() {
    var root = commonStaticRoot + 'styles/wide/images/';
    
    function getMaskDef(maskName, width, height) {
        var lowerCaseMaskName = maskName.toLowerCase();
        
        function defaultMaskDef(url) {
        	return {url : url, width : width, height : height};
        }
        
        switch (lowerCaseMaskName) {
        case "roundedcorners":
            switch (width)  {
            case 460:
                return defaultMaskDef(root + '460x276-mask.png');
            case 300:
                return defaultMaskDef(root + '300x180-mask.png');
            case 140:
                switch (height) {
                case 84:
                    return defaultMaskDef(root + '140x84-mask.png');
                case 89:
                    return defaultMaskDef(root + '140x84-mask.png');
                case 180:
                    return defaultMaskDef(root + '140x180-mask.png');
                case 120:
                    return defaultMaskDef(root + '140x120-mask.png');
                }
                break;
            case 280:
                return defaultMaskDef(root + '280x168-mask.png');
            case 130:
                switch (height) {
                case 78:
                    return defaultMaskDef(root + '130x78-mask.png');
                case 111:
                    return defaultMaskDef(root + '130x111-mask.png');
                }
                break;
            case 220:
                return defaultMaskDef(root + '220x132-mask.png');
            }
            break;
            
        case "article" :
        case "cartoon" :
        case "poll" :
        case "trailblock" :
		case "contributor" :
        	// no mask
            break;
        	
        default:
            if (width >= 140 && height >= 84) {
                return {url : root + lowerCaseMaskName + '_140.png', width : 140, height : 84};
            }
        }
        return null;
    }
    
    function createIE6BackgroundDiv(maskDef) {
        var newImageDiv = document.createElement("div");
        newImageDiv.style.width = maskDef.width + "px";
        newImageDiv.style.height = maskDef.height + "px";
        newImageDiv.style.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + maskDef.url + "',sizingMethod='scale')";
        newImageDiv.style.position = "absolute";
        newImageDiv.style.left = String( - maskDef.leftOffset);
        newImageDiv.style.top = String( - maskDef.topOffset);
        newImageDiv.style.zIndex = "100";
    
    	return newImageDiv;
    }
    
    var applyMaskInIE6 = function (parentNode, maskDef) {
    	maskDef.leftOffset = maskDef.topOffset = 0;
        var newImageDiv = createIE6BackgroundDiv(maskDef);
        newImageDiv.className = 'mask';
        parentNode.style.position = 'relative';
        parentNode.style.display = 'block';
        ensureElementHasLayoutInIE6(parentNode);
        parentNode.appendChild(newImageDiv);
        if (document.getElementById('content')) {
        	// Force IE6 to redraw.
        	document.getElementById('content').style.display = 'none';
        	document.getElementById('content').style.display = 'block';
        }
        
        return newImageDiv;
    };
    
    var applyMask = function (originalElement, parentNode, maskDef) {
        parentNode.style.display = 'block';
        parentNode.style.position = 'relative';
		
        var newImage = originalElement.cloneNode(false);
		newImage.style.width = maskDef.width + 'px';
        newImage.style.height = maskDef.height + 'px';
        newImage.setAttribute('src', maskDef.url);
        newImage.className = 'mask';
        newImage.setAttribute('alt', ' ');
		parentNode.appendChild(newImage);
        
        return newImage;
    };

	getNumberPropertyValue = function (originalElement, propertyName) {
        var propVal = Number(originalElement.getAttribute(propertyName));
        if (propVal === 0) {
        	if (document.defaultView && document.defaultView.getComputedStyle) {
	        	propVal = document.defaultView.getComputedStyle(originalElement,'').getPropertyValue(propertyName);        	
        	} else if (originalElement.currentStyle){
	        	propVal = originalElement.currentStyle[propertyName];
	        }
	        
	 		if (propVal !== null) {
				propVal = parseInt(propVal.replace('px', ''), 10);
			}
        }
		if (!isNaN(propVal) && propVal !== null) {
			return propVal;
		}
		else {
			return 0;
		}
 	}

    applyImageMaskImmediate = function (originalElement, maskName) {
        var parentNode = originalElement.parentNode;
        var width = getNumberPropertyValue(originalElement, 'width');
        var height = getNumberPropertyValue(originalElement, 'height');
        var maskDef = getMaskDef(maskName, width, height);
        if (maskDef) {
            if (isIE6) {
                return applyMaskInIE6(parentNode, maskDef);
            } else {
                return applyMask(originalElement, parentNode, maskDef);
            }
        }
    };
    
    var applyFullScreenMaskInIE6 = function (parentNode, maskDef) {
        var newImageDiv = createIE6BackgroundDiv(maskDef);
        ensureElementHasLayoutInIE6(parentNode);
		parentNode.insertBefore(newImageDiv, parentNode.firstChild);
		
        return newImageDiv;
    };
    
     updateVisibilityOfElementsThatRuinIE6Filters = function (visibility, elementThatContainsThingToNOTHide) {
    	
    	var elementsToIgnore = elementThatContainsThingToNOTHide ? elementThatContainsThingToNOTHide.getElementsByTagName('select') : [];
    	
    	forEachElementOf(elementsToIgnore, function(element) {
    		element.dontHideThisElement = true;
    	});
    	
    	var badElements = $$('select','embed','object');    	
    	
		forEachElementOf(badElements, function(element) {
			if (!element.dontHideThisElement) {
				element.style.visibility = visibility;
			}
		});
		
    	forEachElementOf(elementsToIgnore, function(element) {
			if (element.dontHideThisElement) {
	    		element.dontHideThisElement = false;
	    	}
    	});

    }
    
    applyFullScreenImageMask = function (elementThatContainsThingToNOTHide) {
    	if (isIE6) {
			document.body.parentNode.style.overflow = 'hidden';

    		var element = document.getElementById(elementThatContainsThingToNOTHide);
			updateVisibilityOfElementsThatRuinIE6Filters('hidden', element);
			
			var leftOffset = element.offsetParent.offsetLeft;
			
    		var body = document.body;
    		return applyFullScreenMaskInIE6(
    			element,
    			{
    				url : root + 'white-bg.png',
    				width : body.clientWidth,
    				height : body.clientHeight,
    				leftOffset : leftOffset,
    				topOffset : 0
    			});
    	}
    };
    
    removeFullScreenImageMask = function () {
    	updateVisibilityOfElementsThatRuinIE6Filters('visible');
		document.body.parentNode.style.overflow = '';
    };
    
    ensureElementHasLayoutInIE6 = function (element) {
        if (!element.currentStyle.hasLayout) {
	        element.style.zoom = '1';
	    }    	
    }
    
})();

// -------------------- 11image-utils.js ends here ----------------------------
// ------------------------ 12other-utils.js starts here -----------------------------
function ensurePackage(packageName, packageBlock){
    var package_parts = packageName.split(".");
    var package_so_far = this;
    for (var i = 0; i < package_parts.length; i += 1) {
        var package_part = package_parts[i];
        if (!package_so_far[package_part]) {
            package_so_far[package_part] = {};
        }
        package_so_far = package_so_far[package_part];
    }
    if (packageBlock) {
        packageBlock(package_so_far);
    }
    return package_so_far;
}

function trim(str) {
	return ltrim(rtrim(str));
}

function ltrim(str) {
	return str.replace(/^\s+/, '');
}

function leftTrim(str){
    return str.replace(new RegExp(/^\s*/g), "");
}

function rtrim(str) {
	return str.replace(/\s+$/, '');
}

function stripParamFromUrl(param, urlToStrip) {
	var url = urlToStrip.replace(new RegExp("\\?" + param + "=\\w*$"), ""); // first and only param
	url = url.replace(new RegExp("\\?" + param + "=\\w*&"), "?"); // first of many params
	url = url.replace(new RegExp("&" + param + "=\\w*"), ""); // not first param
	return url;	
}

function isNumber(value) {
	return typeof value === 'number';
}

function delegateErrorHandler(to, from) {
	to.errorHandler = from.errorHandler;
}

function isValidUrl(url) {
	var regexp = /(http:\/\/([\-\w]+\.)+\w{2,3}(\/[%\-\w]+(\.\w{2,})?)*(([\w\-\.\?\/+@&#;`~=%!]*)(\.\w{2,})?)*\/?)/i;
	return regexp.test(url);
}

function appendParameter(url, parameter) {
	if (url.indexOf('?') !== -1) {
		return url + '&' + parameter;
	} else {
		return url + '?' + parameter;
	}
}

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

// ------------------------ 12other-utils.js ends here -----------------------------
/* ---- DialogBox.js ---- */
ensurePackage("guardian.r2");

guardian.r2.DialogBox = function () {

	var appliedImageMask = false;
	var instance = this;

	this.showDialogBox = function (dialogBox, dialogBoxWrapper, scrollable) {
		if (isIE6) {
			document.body.parentNode.style.overflow = 'hidden';
		}
		scrollable = scrollable ? scrollable : false;
		instance.positionDialogBox(dialogBox, dialogBoxWrapper, scrollable);
		dialogBoxWrapper.style.display = "block";
		if (isIE6) {
			dialogBoxWrapper.style.background = "none";
			if (dialogBoxWrapperHasNotAlreadyHadImageMaskApplied(dialogBox, dialogBoxWrapper)) {
				applyFullScreenImageMask(dialogBoxWrapper.id);
				appliedImageMask = true;
			}
			else {
				dialogBoxWrapper.firstChild.style.width = document.body.clientWidth + "px";
				leftOffset = dialogBoxWrapper.offsetParent.offsetLeft;
				dialogBoxWrapper.firstChild.style.left = "-" + leftOffset + "px";
				updateVisibilityOfElementsThatRuinIE6Filters('hidden', dialogBoxWrapper);
			}
		} else {
			updateVisibilityOfElementsThatRuinIE6Filters('hidden', dialogBoxWrapper);
		}
	};

	this.hideDialogBox = function (dialogBoxWrapper) {
		if (isIE6) {
			removeFullScreenImageMask();
		} else {
			updateVisibilityOfElementsThatRuinIE6Filters('', dialogBoxWrapper);
		}
	};

	this.positionDialogBox = function (dialogBox, dialogBoxWrapper, scrollable) {
		var position = getCenterPosition();
		var scroll = getScrollPosition();
		var wrapperWidth = 0;
		var posX = position.x;
		if (isIE6) {
			dialogBoxWrapper.style.position = 'absolute';
			dialogBox.style.position = 'absolute';
		}
		dialogBoxWrapper.style.visibility = 'hidden';
		dialogBoxWrapper.style.display = 'block';
		dialogBox.style.visibility = 'hidden';
		dialogBox.style.display = 'block';
		var w = getAxisBoxModelTotalSize(dialogBox, "width");
		if (isIE6) {
			if (dialogBoxIsContainedByWrapper(dialogBox)) {
				wrapperWidth = getNumberPropertyValue(document.getElementById('wrapper'), "width");
				if (wrapperWidth < posX) {
					posX = wrapperWidth;
				}
			}
		}
		var centreX = posX / 2;
		var centreOffset = w / 2;
		var leftOffset = Math.round(centreX - centreOffset);
		dialogBoxWrapper.style.top = "0px";
		dialogBoxWrapper.style.left = "0px";
		dialogBox.style.left = leftOffset + "px";
		var boxHeight = getAxisBoxModelTotalSize(dialogBox, "height");
		var windowHeight = position.y;
		var scrollHeight = scroll.y;
		var topOffset = 5;
		if (boxHeight < windowHeight) {
			topOffset = (windowHeight - boxHeight) / 2;
		}
		if (isIE6 || scrollable) {
			topOffset += scrollHeight;
		}
		dialogBox.style.top = topOffset + "px";
		dialogBox.style.visibility = '';
		dialogBoxWrapper.style.visibility = '';
		dialogBoxWrapper.style.display = 'none';
	};
	
	this.createCloseLink = function(dialogBox, dialogBoxWrapper) {
		function closeDialogBox() {
			dialogBox.style.display = 'none';
			dialogBoxWrapper.style.display = 'none';
			instance.hideDialogBox(dialogBoxWrapper);
		}
		var closeLinkId = (dialogBox.id + '-close-link');
		if (!$(closeLinkId)) {
			var closeLink = document.createElement('a');
			closeLink.href = '#';
			closeLink.innerHTML = 'close';
			closeLink.id = (closeLinkId);
			closeLink.className='close';
			addEvent(closeLink, 'click', closeDialogBox);
			
			var toolBox= document.createElement('p');
			toolBox.className='toolbox';
			toolBox.appendChild(closeLink);
			
			dialogBox.insertBefore(toolBox, dialogBox.firstChild);

		}
	}
	
	function dialogBoxWrapperHasNotAlreadyHadImageMaskApplied(dialogBox, dialogBoxWrapper) {
		var isEmptyString = /^\s*$/;
		if (dialogBoxIsContainedByWrapper(dialogBox)) {
			return !appliedImageMask;
		}
		return !appliedImageMask && isEmptyString.test(dialogBoxWrapper.innerHTML)
	}

	function dialogBoxIsContainedByWrapper(dialogBox) {
		return !(dialogBox.parentNode === document.body);
	}

	function getAxisBoxModelTotalSize(el, axis) {
		var boxHeight, boxPadding, boxMargins, boxWidth;
		switch (axis) {
		case 'height':
			boxHeight = el.offsetHeight;
			boxMargins = getNumberPropertyValue(el, "marginTop") + getNumberPropertyValue(el, "marginBottom");
			return (boxHeight + boxMargins);
		case 'width':
			boxWidth = el.offsetWidth;
			boxPadding = getNumberPropertyValue(el, "paddingLeft") + getNumberPropertyValue(el, "paddingRight");
			boxMargins = getNumberPropertyValue(el, "marginLeft") + getNumberPropertyValue(el, "marginRight");
			return (boxWidth + boxPadding + boxMargins);
		}
	}
};
/* ---- HitboxLinkTrackedController.js ---- */
ensurePackage("guardian.r2");

guardian.r2.HitboxLinkTrackedController = function (view) {

	var instance = this;

	this.handleOnLoad = function () {
		view.regsiterLinkClickedEvent(instance.handleLinkClicked);
	};

	this.handleLinkClicked = function (elementName, url) {
		var matches = /&lid=(.*)&lpos=(.*)/.exec(elementName);
		
		if (matches !== null) {
			_hbLink(matches[1], matches[2]);
			view.updateDocumentLocationWithDelay(url);
			return false;
		}
		
		return true;
	};

	view.registerOnLoadEvent(instance.handleOnLoad);
};
 
/* ---- HitboxLinkTrackedView.js ---- */
ensurePackage("guardian.r2");

guardian.r2.HitboxLinkTrackedView = function () {
	function getParentAnchorTag(element) {
		var parentElement = element;
		
		while (parentElement) {
			if (parentElement.tagName === "A") {
				return parentElement;
			}
			
			parentElement = parentElement.parentNode;
		} 
		
		return null;
	}
	
	this.regsiterLinkClickedEvent = function (callback) {
		var viewCallback = function (event) {
			var anchorTag = getParentAnchorTag(event.target);
			if (!anchorTag) {
				return true;
			}
			
			return callback(anchorTag.name, anchorTag.href);
		};
		
		forEachElementOf($$('.js-hitbox-tracked'),
			function (trackingWrapper) {
				addEvent(trackingWrapper, "click", viewCallback);
			}
		);
	};
	
	this.registerOnLoadEvent = function (callback) {
		addEvent(document, "load", callback);
	};
	
	this.updateDocumentLocationWithDelay = function (url) {
		setTimeout(
			function () {
				document.location = url;
			}, 500);
	};
};
// ---------------------- ObfuscationService.js starts here -----------------------------

ensurePackage("guardian.r2");

guardian.r2.ObfuscationService = function(){
	var instance = this;
	
	this.encryptPassword = function(password, challenge2){
		return binl2hex(core_hmac_md5(challenge2, password));
	};
	
	
}
	
// ----------------------- ObfuscationService.js ends here ------------------------------
// ---------------------- ProfileLinkController.js starts here -----------------------------

ensurePackage("guardian.r2");

guardian.r2.ProfileLinkController = function (profileLinkView, userProfileUrl) {
	
	function setUserProfileLink() {
		var atCookie = profileLinkView.readATCookie();
		
		if (atCookie) {
			var userNameRegExp = /\&a=([\w]*)\&/;
			var userName = atCookie.match(userNameRegExp)[1];
			var completeUrl = userProfileUrl + userName;
			profileLinkView.setUserProfileLink(completeUrl);
		}
	}
	
	profileLinkView.addLoadEvent(setUserProfileLink);
}

// ----------------------- ProfileLinkController.js ends here ------------------------------
// ---------------------- ProfileLinkView.js starts here -----------------------------

ensurePackage("guardian.r2");

guardian.r2.ProfileLinkView = function (elementName) {

	this.readATCookie = function () {
		return readCookie('at');
	};
	
	this.addLoadEvent = function (callback) {
		addEvent(document, 'load', callback);
	};
	
	this.setUserProfileLink = function (url) {
		var anchor = document.getElementById('profile-link');
		anchor.href = url;
		var profileLinkHolder = document.getElementById('profile-link-holder');
		profileLinkHolder.style.display = '';
	};

}


// ----------------------- ProfileLinkView.js ends here ------------------------------

// ---------------------- SignInController.js starts here -----------------------------

ensurePackage("guardian.r2");

guardian.r2.SignInController = function (signInView, signInListeners, obfuscationService, popupUrl) {
	var instance = this;
	var savedDestinationUrl;
	
	this.submitSignInForm = function (event) {
		
		var formFields = signInView.getPasswordAndChallenge2FormFields();
		var obfuscated_tokens = obfuscationService.encryptPassword(formFields.password, formFields.challenge2);
		var hidden_password = signInView.hidePassword();

		urlStack.clearUrlStack();
		urlStack.pushUrlOntoStack(savedDestinationUrl);

		signInView.submitForm(obfuscated_tokens, hidden_password);	
		
		Event.stop(event)
		return false;
	};
	
	this.forwardToRegistrationPage = function (event) {
		urlStack.clearUrlStack();
		urlStack.pushUrlOntoStack(savedDestinationUrl);
	}
	
	this.openSignInBox = function (event, getTargetUrlCallback, getClassNameCallback) {
		savedDestinationUrl = getTargetUrlCallback(event);

		signInView.createScriptElements();
		signInView.createDivElements();
		
		var packageCode = signInView.getPackageCode(event, getClassNameCallback);
		var popupUrlWithPackageCode = popupUrl;
		
		if(packageCode){
			popupUrlWithPackageCode = popupUrl + "?package=" +packageCode;
		}
		
		showSignInBox(popupUrlWithPackageCode);
		
		Event.stop(event);
		return false;
	};
	
	this.closeSignInBox = function (event) {
		signInView.closeDialogBox();
		
		Event.stop(event);
		return false;
	};
	
	function showSignInBox(requestUrl) {
		var ajaxRequest = new Ajax.Request(requestUrl, {
			method: 'get',
			onSuccess: instance.showSignInBoxSuccess,
	 		onFailure: function (transport) {
				signInView.updateAndShowDialogBox(transport.responseText);
				signInView.addSignInFormListeners(
						instance.submitSignInForm, 
						instance.closeSignInBox,
						instance.forwardToRegistrationPage);
			}
		});
	};
	
	this.showSignInBoxSuccess = function (transport){
		signInView.updateAndShowDialogBox(transport.responseText);
		signInView.addSignInFormListeners(
			instance.submitSignInForm, 
			instance.closeSignInBox, 
			instance.forwardToRegistrationPage);	
		signInView.setFocus();
	};
	
	this.addListenersTo = function (element) {
		if(!element) {
			element = signInView.getDocumentBody();
		}
		
		signInListeners.addLoginListeners(element, instance.openSignInBox);
	};

	signInView.setOpenSignInBoxAction(instance.openSignInBox);	
	signInView.addLoadEvent(instance.addListenersTo);	
}

// ----------------------- SignInController.js ends here ------------------------------
// ---------------------- SignInListeners.js starts here -----------------------------

ensurePackage("guardian.r2");

guardian.r2.SignInListeners = function () {
	
	function addListenersTo(inElement, cssRule, getTargetUrlCallback, getClassNameCallback, openSignInBoxCallback) {
		
		var elementsToAddListenersTo = $(inElement).getElementsBySelector(cssRule);
		
		elementListenerFunction = function(event) {
				openSignInBoxCallback(event, getTargetUrlCallback, getClassNameCallback);	
		}
		
		for (var i = 0; i < elementsToAddListenersTo.length; i++) {
			addEvent(elementsToAddListenersTo[i], 'click', elementListenerFunction);	
		}
		
	};
	
	
	function getTargetUrlFromSamePageLoginAnchor(event) {
		return document.location;
	};
	
	function getClassNameFromSamePageLoginAnchor(event) {
		return getAncestorOfType(Event.element(event), 'a').className;
	};
	
	function getTargetUrlFromAnchorBasedLogin(event) {
		return getAncestorOfType(Event.element(event), 'a').href;
	};
	
	function getClassNameFromAnchorBasedLogin(event) {
		return getAncestorOfType(Event.element(event), 'a').className;
	};

	function getTargetUrlFromFormBasedLogin(event) {
		return getAncestorOfType(Event.element(event), 'form').action;
	};
	
	function getClassNameFromFormBasedLogin(event) {
		return Event.element(event).className;
	};
	
	this.addLoginListeners = function (inElement, openSignInBoxCallback) {
		addListenersTo(	inElement, 
						'a.same-page-login-required', 
						getTargetUrlFromSamePageLoginAnchor, 
						getClassNameFromSamePageLoginAnchor, 
						openSignInBoxCallback);
		
		addListenersTo(	inElement, 
						'a.anchor-based-login-required', 
						getTargetUrlFromAnchorBasedLogin, 
						getClassNameFromAnchorBasedLogin, 
						openSignInBoxCallback);
		
		addListenersTo(	inElement, 
						'form input.form-based-login-required', 
						getTargetUrlFromFormBasedLogin, 
						getClassNameFromFormBasedLogin, 
						openSignInBoxCallback);
	};
	
};
// ---------------------- SignInView.js starts here -----------------------------

ensurePackage("guardian.r2");

guardian.r2.SignInView = function (scriptLocation) {

	var instance = this;
	
	var dummy = '----------------------------------------';
	var dialogBoxDivId = "signin-div";
	var wrapperDivId = "signin-div-wrapper";
	var openSignInBoxCallback;
	
	var dialogBox = new guardian.r2.DialogBox();
	
	this.getDocumentBody = function () {
		return document.body;
	};
	
	this.setOpenSignInBoxAction = function (callback) {
		openSignInBoxCallback = callback;
	};
	
	this.addLoadEvent = function (callback) {
		addEvent(document, 'load', callback);
	};
	
	this.addSignInFormListeners = function(submitCallback, closeCallback, registerCallback) {
		addEvent($('popUpSignIn'), 'click', submitCallback);
		addEvent($('login-close-link'), "click", closeCallback);
		addEvent($('cancelSignIn'), "click", closeCallback);
		addEvent($('signin-popup-registration-link'), "click", registerCallback);
	};
		
	this.hidePassword = function (){
		return dummy.substr(0, $('inline-password').value.length);
	};
	
	this.getPasswordAndChallenge2FormFields = function () {
		return {challenge2 : $('AU_CHALLENGE2').value, password : $('inline-password').value};			
	};
	
	this.submitForm = function (obfuscated_tokens, hidden_password) {
	
		$('AU_PASSWORD_HASH').value = obfuscated_tokens;
		$('inline-password').value = hidden_password;
		
		$('regpss1').submit();
	};
	
	this.createScriptElements = function () {
		importScript(scriptLocation);
	};
	
	this.createDivElements = function () {
		createWrapperDiv();
		
		if(!$(dialogBoxDivId)) {
			var dialogBoxDivElement = document.createElement("div");
			dialogBoxDivElement.id = dialogBoxDivId;
			dialogBoxDivElement.className = "dialog-box";
			document.body.appendChild(dialogBoxDivElement);
		}	
	};
	
	this.updateAndShowDialogBox = function(text){
		$(dialogBoxDivId).update(text);		
		dialogBox.showDialogBox($(dialogBoxDivId), $(wrapperDivId), false);
	};
	
	this.closeDialogBox = function () {
		var signInBoxWrapper = $(wrapperDivId);
		var signInBox = $(dialogBoxDivId);
		
		signInBox.style.display = "none";
		signInBoxWrapper.style.display = "none";
		
		dialogBox.hideDialogBox(signInBoxWrapper);
	};
	
	function createWrapperDiv() {
		if (!$(wrapperDivId)) {
			var wrapperDivElement = document.createElement("div");
			wrapperDivElement.id = wrapperDivId;
			wrapperDivElement.className = "dialog-wrapper";
			document.body.appendChild(wrapperDivElement);
		}		
	};
	
	this.getDocumentLocation = function() {
		return document.location;
	};
	
	this.getPackageCode = function (event, getClassNameCallback){
		
		var className = getClassNameCallback(event);
		if(className) {
			var packageRequiredMatcher = /package-required-(\w+)/;
			var match = packageRequiredMatcher.exec(className);
			if (match) {
				return match[1];
			}	
		}
				
		return null;
	};
	
	this.setFocus = function (){
		$('inline-email').focus();
	}
	
	
}

// ----------------------- SignUpView.js ends here ------------------------------

// ---------------------- ad_support.js starts here ---------------------------
// Time out is in minutes
var hoursToCount = 0; // Set this to make the cookie _not_ be session based (that is, an expire field is set)
var timeOut = 720;
var maxAdCount = 100;
var showAdsOnNthVideo = 2;

function buildIntrusiveAd(adHost, geoCountry, geoRegion, geoCity, geoBandwidth, randString, commercialFolder, keywords, pageUrl, site, system, blockVideoAds) {
	var theseCookies = document.cookie;
	var pos = theseCookies.indexOf('GUDHTMLAds=');
	if 	(pos == -1) {
		var seconds = 180;
		var expireTime = new Date();
		var currenttimeinmills = expireTime.getTime();
		expireTime.setTime(currenttimeinmills + seconds * 1000 );
		document.cookie = 'GUDHTMLAds=Dummy; expires=' + expireTime.toGMTString() + ' ; path=/ ; domain=guardian.co.uk';
		
        var	intrusad = 
            '<' + 'script type="text/javascript" src="' + adHost + 
            '/js.ng/spacedesc=01&amp;comfolder=' + commercialFolder + 
            '&amp;keywords=' + keywords + 
            '&amp;country=' + geoCountry + 
            '&amp;region=' + geoRegion + 
            '&amp;city=' + geoCity + 
            '&amp;bandwidth=' + geoBandwidth + 
            '&amp;rand=' + randString + 
			'&amp;site=' + site +
            '&amp;url=' + pageUrl +  
			'&amp;system=' + system + 
			'&amp;blockVideoAds=' + blockVideoAds + '"></' + 'script>';
			
		document.write(intrusad);
		document.close();
	}
}

function AdCookieValue() {
	this.date = new Date();
	this.date.setTime(0);
	this.adsPlayed = 0;
	this.videosPlayed = 0;
	
	if (hoursToCount != 0) {
		var t = new Date().getTime();
		t += hoursToCount * 1000 * 60 * 60;
		this.expiryDate = new Date();
		this.expiryDate.setTime(t);
	}
}

AdCookieValue.prototype.adDisplayed = function() {
	this.adsPlayed++;
	this.date = new Date();
}

AdCookieValue.prototype.videoDisplayed = function() {
	this.videosPlayed++;
}

AdCookieValue.prototype.shouldDisplayAdvert = function() {
	return true;  
}

AdCookieValue.parseText = function(text) {
	var bits = text.split("|");
	var cookieValue = new AdCookieValue();
	cookieValue.adsPlayed = bits[0] - 0;
	cookieValue.videosPlayed = bits[1] - 0;
	cookieValue.date.setTime(Date.parse(bits[2]));
	if (hoursToCount != 0 && bits[3]) {
		cookieValue.expiryDate.setTime(Date.parse(bits[3]));
	}
	return cookieValue;
}

AdCookieValue.prototype.toString = function() {
	if (hoursToCount != 0) {
		return this.adsPlayed + "|" + this.videosPlayed + "|" + this.date + "|" + this.expiryDate;
	} 
	return this.adsPlayed + "|" + this.videosPlayed + "|" + this.date;
}

AdCookieValue.loadFromCookie = function() {
	var cookies = document.cookie.split(';');
	
	for (var i = 0; i < cookies.length; i++) {
		var nameValuePair = cookies[i].split('=');
		if (nameValuePair[0].charAt(0) == ' ') {
			nameValuePair[0] = nameValuePair[0].substring(1, nameValuePair[0].length);
		}
		
		if (nameValuePair[0] == "GUVidAd") {
			return AdCookieValue.parseText(nameValuePair[1]);
		}
	}
	
	return new AdCookieValue();
}

function isVideoAdDisplayed() {
	return AdCookieValue.loadFromCookie().shouldDisplayAdvert();
}

function videoAdPlayed(domain) {
	var cookieValue = AdCookieValue.loadFromCookie();
	cookieValue.adDisplayed();
	writeCookie(domain, cookieValue);
}

function videoPlayed(domain) {
	var cookieValue = AdCookieValue.loadFromCookie();
	cookieValue.videoDisplayed();
	writeCookie(domain, cookieValue);
}

function writeCookie(domain, cookieValue) {
	var cookieString;
	if (hoursToCount != 0) {
		cookieString = "GUVidAd=" + cookieValue.toString() + "; expires=" + cookieValue.expiryDate.toGMTString() + " ; path=/ ; domain=" + domain;
	} else {
		cookieString = "GUVidAd=" + cookieValue.toString() + "; path=/ ; domain=" + domain;
	}
	document.cookie = cookieString;
}

// ----------------------- ad_support.js ends here ----------------------------
// ------------------------ caption.js starts here ----------------------------

function Caption() {
	
	var instance = this;
	
	this.init = function () {
		var imageList = $$ ? $$('li.pixie') : getElementsByClassNameAndTagName('pixie', document, 'li');
		for (var i = 0; i < imageList.length; i++) {
			imageList[i].onmouseover = function () {
				instance.changeState(this, 'over');
			};
			imageList[i].onmouseout =  function () {
				instance.changeState(this, 'off');
			};
			imageList[i].onfocus = function () {
				instance.changeState(this, 'over');
			};
			imageList[i].onblur =  function () {
				instance.changeState(this, 'off');
			};
		}
	};

	this.changeState = function (element, state)  {
		var existingClassName = instance.getOldClassName(element, 'static-state');
		var currentClassName = element.className;
		var startPosition, endPosition;
	
		var isMini = classNameRegex('mini');
		if (isMini.test(currentClassName)) {
			startPosition = -7;
			endPosition = 0;
		} else {
			startPosition = -4;
			endPosition = 1.4;
		}
		
		if (currentClassName.match(/c-[0-9]+-c/)) {
			var timeOutHide = currentClassName.match(/[0-9]+/);
			timeOutHide = parseInt(timeOutHide, 10);
			clearInterval(timeOutHide);
		}
		var trailText = element.getElementsByTagName('div')[1];
		if (trailText && classNameRegex('trail-text').test(trailText.className)) {
			var elementRef = element.getElementsByTagName('div')[1];
			var timeOutRef = setInterval(function () {
				instance.show(elementRef, state, startPosition, endPosition);
			}, 10);
			element.className = existingClassName + "c-" + timeOutRef + "-c";
		}
	};
	
	this.show = function (element, state, startPosition, endPosition)  {
	
		var rate = 1;
		
		var captionPosition = parseInt(element.style.marginTop, 10);
		if (isNaN(captionPosition)) {
			captionPosition = startPosition;
		} else if (state === 'over') {	
			captionPosition = captionPosition + rate;
		} else {
			captionPosition = captionPosition - rate;
		}
		
		if (captionPosition <= endPosition && state === 'over' || captionPosition >= startPosition && state === 'off') {
			element.style.marginTop = captionPosition + 'em';
		} else {
			var timeOut = element.parentNode.className.match(/[0-9]+/);
			var existingClassName = instance.getOldClassName(element.parentNode, 'static-state');
			element.parentNode.className = existingClassName + "static-state";
			timeOut = parseInt(timeOut, 10);		
			if (!isNaN(timeOut)) {
				clearInterval(timeOut);
			}
		}
	};
	
	this.getOldClassName = function (element, modificationClass)  {
		var oldClass = '';
		if (element.className) {
			oldClass = element.className;
		} else {
			return oldClass;
		}
		var modifiedMatch = classNameRegex('(' + modificationClass + ')|(c-[0-9]+-c)');
		var newClass;
		if (modifiedMatch.test(oldClass))  {
			newClass = oldClass.replace(modifiedMatch, " ");
		} else {
			newClass = oldClass + " ";
		}
		return newClass;
	};
}

var caption = new Caption();
addEvent(window, "load", caption.init); 

// ------------------------- caption.js ends here -----------------------------
// ------------------------ clear.js starts here ------------------------------
addEvent(window, "load", handleText); 
function handleText ()  {
	if (!document.getElementsByTagName) return;
	var inputFields=document.getElementsByTagName('input');
	for (var i=0; i<inputFields.length; i++)  {
		if (inputFields[i].className.match(/\bsearch-field\b/))  {
			inputFields[i].onfocus= function () {
		
				clearText(this);
			}
			
			inputFields[i].onblur= function () {
			
				setText(this);
			}
			
		}
	}
	
}


function clearText (e)  {
	var curentText=e.value;
	var defaultText=e.getAttribute('title');
	if (curentText==defaultText) e.value ='';
	
}

function setText (e)  {
	var curentText=e.value;
	var defaultText=e.getAttribute('title');	
	if (curentText=='') e.value =defaultText;
}
// ------------------------- clear.js ends here -------------------------------
// --------------------- convert-png.js starts here ---------------------------
/*@cc_on @*/
/*@if (@_jscript_version <= 5.6)
// The above conditional compilation for IE is equivalent to
// a conditional comment in HTML of 'if lte IE 6'

addEvent(window, "load", doPng); 

function doPng()  {

	var pngsList=document.getElementsByTagName('img');
	
	var pngs = []
	forEachElementOf(pngsList, function(element) {
		pngs.push(element);
		});
	

	if(pngs.length==0) return;
	for(var i=0; i<pngs.length; i++){
	var parent=pngs[i].parentNode;
		if(pngs[i].src.match(/\.png$/) && !pngs[i].src.match("/reuters/")){
			var newImage=document.createElement("div");
			newImage.style.width=pngs[i].width+'px';
			newImage.style.height=pngs[i].height+'px';
			newImage.id=pngs[i].id;
			newImage.className=pngs[i].className;
			var mask=pngs[i].src;
			newImage.style.filter="progid:DXImageTransform.Microsoft.AlphaImageLoader(src='"+mask+"',sizingMethod='scale')";			
			parent.replaceChild(newImage, pngs[i]);
		}
		
	}
	
}
/*@end @*/
// ---------------------- convert-png.js ends here ----------------------------
// ---------------------- fixframes.js starts here -----------------------------
function forceAllFramesReload() {

    var allframes = document.getElementsByTagName('iframe');
    
    forEachElementOf(allframes, function(currentframe) {
        if (currentframe.src && currentframe.contentWindow) {
            currentframe.contentWindow.location = currentframe.src;
        }
    });
}

if (!(isIE6 || isIE7)) {
    addEvent(window, "load", forceAllFramesReload);
}

// ----------------------- fixframes.js ends here ------------------------------
// --------------------- font-sizer.js starts here ----------------------------
/*
	this script adjusts the font-size of the document in 10% increments.
	it checks for the sizing-widget id and then attaches click events 
	it also sets a cookie to rember the font size for 1 year form the last visit

*/

/*
	if javascript is turned off the links goto larger.html and smaller.html
	these pages should explain about what the widget is for and how to adjust 
	the font-size in the browser...
*/

addEvent(window, "load", fontSizer);
addEvent(window, "load", fontSizerSidebar);
addEvent(window, "load", setFontSize);


function fontSizer()
{
	if (!document.getElementById) return false;
	
	
	
	if(document.getElementById('larger') && document.getElementById('smaller'))  {
		var increase=document.getElementById('larger');
		var decrease=document.getElementById('smaller');
		
		increase.style.display="inline";
		decrease.style.display="inline";
		
		var myDate= new Date();
		expires=myDate.getFullYear()+1
		myDate.setFullYear(expires);
		expires='; expires='+myDate.toGMTString();
		
		increase.onclick= function() {
			//get the calculated font-size
			if (document.getElementsByTagName('body')[0].style.fontSize)  {
				var currentSize=document.getElementsByTagName('body')[0].style.fontSize;
				
				currentSize=currentSize.match(/([0-9]+)/);
				currentSize=(Number(currentSize[0])+10)+'%';

			}else{//no calculated font size so we are just starting
				var currentSize='110%';
			}
			
			document.getElementsByTagName('body')[0].style.fontSize=currentSize;
			document.cookie="fontSize="+currentSize+expires;
			return false;
		}
		
		decrease.onclick= function() {
			//get the calculated font-size
			if (document.getElementsByTagName('body')[0].style.fontSize)  {
				var currentSize=document.getElementsByTagName('body')[0].style.fontSize;
				currentSize=currentSize.match(/([0-9]+)/);
				currentSize=(Number(currentSize[0])-10);
				if (currentSize<60) currentSize=60;
				currentSize=currentSize+'%';
			}else{//no calculated font size so we are just starting
				var currentSize='90%';
			}
			document.getElementsByTagName('body')[0].style.fontSize=currentSize;
			document.cookie="fontSize="+currentSize+expires;
			return false;
			

		}
		
	
	}
}

function fontSizerSidebar()
{
	if (!document.getElementById) return false;
	
	
	
	if(document.getElementById('larger-sidebar') && document.getElementById('smaller-sidebar'))  {
		var increase=document.getElementById('larger-sidebar');
		var decrease=document.getElementById('smaller-sidebar');
		
		increase.style.display="inline";
		decrease.style.display="inline";
		
		var myDate= new Date();
		expires=myDate.getFullYear()+1
		myDate.setFullYear(expires);
		expires='; expires='+myDate.toGMTString();
		
		increase.onclick= function() {
			//get the calculated font-size
			if (document.getElementsByTagName('body')[0].style.fontSize)  {
				var currentSize=document.getElementsByTagName('body')[0].style.fontSize;
				
				currentSize=currentSize.match(/([0-9]+)/);
				currentSize=(Number(currentSize[0])+10)+'%';

			}else{//no calculated font size so we are just starting
				var currentSize='110%';
			}
			
			document.getElementsByTagName('body')[0].style.fontSize=currentSize;
			document.cookie="fontSize="+currentSize+expires;
			return false;
		}
		
		decrease.onclick= function() {
			//get the calculated font-size
			if (document.getElementsByTagName('body')[0].style.fontSize)  {
				var currentSize=document.getElementsByTagName('body')[0].style.fontSize;
				currentSize=currentSize.match(/([0-9]+)/);
				currentSize=(Number(currentSize[0])-10);
				if (currentSize<60) currentSize=60;
				currentSize=currentSize+'%';
			}else{//no calculated font size so we are just starting
				var currentSize='90%';
			}
			document.getElementsByTagName('body')[0].style.fontSize=currentSize;
			document.cookie="fontSize="+currentSize+expires;
			return false;
			

		}
		
	
	}
}

/*
	Get the cookie and set the adjusted font-size
*/

function setFontSize ()  {
	var cookies=document.cookie;
	var cookieList=cookies.split(';');
	var fontSize='';

	for ( var i=0; i<cookieList.length; i++)  {
		if (cookieList[i].match('fontSize')) fontSize=cookieList[i];
	}
		if (fontSize)  {	
			fontSize=fontSize.match((/([0-9]+\%)/))[0];
			document.getElementsByTagName('body')[0].style.fontSize=fontSize;
		}
		
}
// ---------------------- font-sizer.js ends here -----------------------------
// -----------------------formChecker.js starts here ------------------------------

function formChecker(elem, limit) {
var warning = document.getElementById('warning');
var charsLeft = limit-elem.value.length;
	warning.innerHTML=charsLeft + ' characters left';
	warning.className = "";
	if(elem.value.length>limit) {
	elem.value=elem.value.substring(0,limit);
	warning.innerHTML = "Max 250 characters";
	warning.className = "warning";
	elem.scrollTop = elem.scrollHeight - elem.clientHeight;
	}
}

function formCheckerSide(elem, limit) {
var warning = document.getElementById('warning-side');
var charsLeft = limit-elem.value.length;
	warning.innerHTML=charsLeft + ' characters left';
	warning.className = "";
	if(elem.value.length>limit) {
	elem.value=elem.value.substring(0,limit);
	warning.innerHTML = "Max 250 characters";
	warning.className = "warning";
	elem.scrollTop = elem.scrollHeight - elem.clientHeight;
	}
}

addEvent(window, "load", setUpGallery); 

function setUpGallery() {
	if(!document.getElementById || !document.getElementById("shower") || !document.getElementById("overlay-wrapper")) {
		return;
	}
	var maxOpacity = 90;
	var fader = maxOpacity; 
	var fadeInterval; //The Interval set by setInterval
	var overlayWrap = document.getElementById("overlay-wrapper");
	var overlay = document.getElementById("overlay");
	var controller = document.getElementById("shower");
	
	var guGallery = {
		init : function () {
			var overlayWidth = guGallery.calculateWidth();
			overlayWrap.style.width = overlayWidth + 'px';
			overlayWrap.style.display = "block";
			if (overlayWrap.filters) {
				overlay.style.width = (overlayWidth - 20) + 'px';
			}
			controller.onclick = guGallery.switchDisplay;
			guGallery.displayIsAvailable = true; 
		},
		
		calculateWidth : function () {
			var mainPicture = document.getElementById('main-picture');
			var width = mainPicture.width;
			if(width < 500) {
				return 250;
			} else {
				return 300;
			}
		},

		switchDisplay : function () {
			try {
				clearInterval (fadeInterval);
			}
			catch(e){}
			var state = overlayWrap.className;
			if(guGallery.displayIsAvailable) {
				fadeInterval = setInterval(fadeOut, 15);
				state = state.replace("gallery-on","gallery-off");
			} else {
				fadeInterval = setInterval(fadeIn, 15);
				state = state.replace("gallery-off","gallery-on");
			}
			overlayWrap.className = state;
			return false;
		}
	};
		
	function fadeOut() {
		setOpacity(fader);
		fader = fader - 1;
		if (fader < 0) {
			clearInterval (fadeInterval);
			overlay.style.opacity = -2;
			guGallery.displayIsAvailable = false;
		}
	}
	
	function fadeIn() {
		setOpacity(fader);
		fader = fader + 1;
		if (fader > (maxOpacity - 1)) {
			clearInterval (fadeInterval);
			guGallery.displayIsAvailable = true;
		}
	}
	
	function setOpacity(fader) {
		if(overlay.filters) {
			overlay.style.filter="progid:DXImageTransform.Microsoft.Alpha(opacity=" + fader + ")";
		} else {
			overlay.style.opacity = fader/100;
		}
	}
	
	guGallery.init();
}
function genericTabbing() {
	
	var toggles = $$ ? $$("ul.tab-toggle") : []; //Basically, do nothing if we don't have prototype.
	for (var p = 0; p < toggles.length; p++) {
		var activePaneSet = false;
		var anchors = toggles[p].getElementsByTagName("a");
		// Cache?
		for (var q = 0; q < anchors.length; q++) {
			addEvent(anchors[q], 'click', switchPanes);
			if ((!activePaneSet) && (!elementHasClassName(anchors[q], 'inactive'))) {
				showSelectedPane(anchors[q]);
				activePaneSet = true;
			}
		}
	}
	
	function switchPanes(event) {
		var clickElement = Event.element(event);
		showSelectedPane(clickElement);
		showSubNavigation(clickElement);
		setTabClasses(clickElement);
		event.stop();
	}
	
	function showSelectedPane(clickElement) {
		var selectedPaneId = clickElement.href.split('#')[1];
		var selectedPane = document.getElementById(selectedPaneId);
		if (selectedPane) {
			hideAllPanes(getAncestorOfType(clickElement, 'div'));
			selectedPane.style.display = 'block';
		}
	}

	function hideAllPanes(containingElement) {
		var paneClass = containingElement.id + '-pane';
		var panesList = getElementsByClassNameAndTagName(paneClass, containingElement, 'div');
		for (var i = 0; i < panesList.length; i++) {
			panesList[i].style.display = 'none';
		}
	}

	function setTabClasses(clickElement) {
		var allLinks = getAncestorOfType(clickElement, 'ul').getElementsByTagName('a');
		var inactiveClassName = "inactive";
		var classRegExp = classNameRegex(inactiveClassName);
		for (var ii = 0; ii < allLinks.length; ii++) {
			if (!elementHasClassName(allLinks[ii], inactiveClassName)) {
				allLinks[ii].className += " " + inactiveClassName;
			}
		}
		clickElement.className = removeClassName(clickElement, inactiveClassName).strip();
	}
	
	function showSubNavigation(clickElement) {
		// See the weather viewer @ twentyFourHourForecastDisplay to see how this works.
		// Basically give your previous and next anchors a 'rel' of prev or next
		// And this will dynamically rewrite the href to link to the correct page and 
		// will hide the links if there are no more pages in that direction. 
		// TODO: maxPaneNumber is hardcoded below. If this is required somewhere else,
		// consider using a variable to be passed in instead.
		if (clickElement.hasAttribute('rel')) {
			var newPane = clickElement.href;
			var newPaneNumber = parseInt(newPane.substring(newPane.length - 1), 10);
			var allAnchors = getAncestorOfType(clickElement, 'div').getElementsByTagName('a');
			var previousPaneNumber = newPaneNumber - 1;
			var nextPaneNumber = newPaneNumber + 1;
			var maxPaneNumber = 2;
			for (var i = 0; i < allAnchors.length; i++) {
				var link = allAnchors[i];
				var linkType = link.getAttribute('rel');
				if (linkType) {
					linkHref = link.href.substring(0, link.href.length - 1);
					switch (linkType) {
					case 'prev':
						link.href = linkHref + previousPaneNumber;
						link.style.display = (previousPaneNumber >= 0) ? 'block' : 'none';
						break;
					case 'next':
						link.href = linkHref + nextPaneNumber;
						link.style.display = (nextPaneNumber <= maxPaneNumber) ? 'block' : 'none';
						break;
					}
					
				}
			}
		}
	}
}

if (document.getElementById && document.getElementsByTagName) {
	addEvent(window, "load", genericTabbing);
}
/*
Pull down navigation handler

*/
addEvent(window, "load", GUgetUrl);

function GUgetUrl()  {
	if (!document.getElementById('go-to')) return;
	
	var myUrl=document.getElementById('go-to');
	for(var i=0; i<myUrl.length;i++)  {

		myUrl.onchange=function ()  {
						
			window.location=this.value;
		}
	}
	
	

}
google_ad_client = 'partner_js'; // substitute your client_id
google_ad_channel = '';
google_ad_output = 'js';
google_max_num_ads = '3';
google_ad_type = 'text';
google_language = 'en';
google_encoding = 'utf8';
google_safe = 'high';

function google_ad_request_done(google_ads) {
	var google_attribution = 'Ads by Google';
	if (google_ads.length == 0) {
		return;
	}
	var s = '';
	if (google_ads[0].type == 'text') {
		s += '<h3>'+ google_attribution +'</h3>';
		s += '<ul class="results">';
		for(i=0; i < google_ads.length; ++i) {
			s += '<li>';
			s += '<h4><a target="_TOP" href="' + google_ads[i].url + '">' + google_ads[i].line1 + '</a></h4>';
			s += '<p>' + google_ads[i].line2 + ' ' + google_ads[i].line3 + '</p>';
			s += '<p><a target="_TOP" href="' + google_ads[i].url + '">' + google_ads[i].visible_url + '</a></p>';
			s += '</li>';
		}
		s += '</ul>';
	}

	function createAdvertisingDiv() {
		var advertisingDiv = document.getElementById('google-ads-container');
		if (advertisingDiv) {
			advertisingDiv.innerHTML = s;
			advertisingDiv.style.display = 'block';
		}
	}

	if (loadEventList.hasFired) {
		createAdvertisingDiv();
	} else {
		addEvent(document, 'load', createAdvertisingDiv);
	}
	
	return;
}
// ------------------------ more.js starts here -------------------------------
addEvent(window, "load", more); 

function more()  {
	if(!document.getElementById) return;
	var target, idValue;
	var n=0;
	var more= new Array();
	
	var showers=document.getElementsByTagName('a');
	for (var i=0;i<showers.length; i++)  {

		target=showers[i].href;
		if(target.match(/#.*/))  {
		
			if(showers[i].className.match('shower'))  {
				
				
				showers[i].onclick=function (e, n)  {
					target=this.href;
					idValue=target.match(/#.*/);
					idValue=idValue.toString();
					idValue=idValue.replace('#','');
					more=document.getElementById(idValue);
					if (!this.className.match('open'))  {
						if(this.className)
							{
								var oldClassName=this.className;
								this.className=this.className+' open';
							}else{
								this.className="open"
							}
						more.style.display='block';
						if (!e) var e = window.event;
						if (e.clientY>120)
							{
									window.scrollBy(0,100);
							}
					}else{
						var oldClassName=this.className
						oldClassName=oldClassName.replace(/ ?open/,'');
						this.className=oldClassName;
						
						more.style.display='none';
						//this.className="closed";
					}
	
					return false;
				}
			}
		}
	}	
}

//event.clientY ie
// ------------------------- more.js ends here --------------------------------
// -------------------- post-load-images.js starts here ----------------------------

var postLoadImage = function postLoadImageFactory() {
    var imagesToLoad = {};
    
    function postLoadImage(elementId, url) {
        imagesToLoad[elementId] = url;
    }
    
    function loadImages() {
        for (var elementId in imagesToLoad) {
            if (imagesToLoad.hasOwnProperty(elementId)) {
                document.getElementById(elementId).src = imagesToLoad[elementId];
            }
        }
    }
    addEvent(window, "load", loadImages); 
    
    return postLoadImage;
}();

var applyImageMask = function applyImageMaskFactory() {
    var imagesToMask = {};
    
    function applyImageMask(elementId, maskName) {
        imagesToMask[elementId] = maskName;
    }
    
    function applyImageMasks() {
        for (var elementId in imagesToMask) {
            if (imagesToMask.hasOwnProperty(elementId)) {
	            var originalElement = document.getElementById(elementId);
	            var parentNode = originalElement.parentNode;
	            var parentNodeName = parentNode.nodeName;
	            if (parentNodeName.match(/^a$|^div/i) && parentNode.lastChild.className !== 'mask') {
	                var maskName = imagesToMask[elementId];
	                applyImageMaskImmediate(originalElement, maskName);
	            }
	        }
        }
    }
    addEvent(window, "load", applyImageMasks); 
    
    return applyImageMask;
}();

// -------------------- post-load-images.js ends here ----------------------------
// ---------------------- search-bg.js starts here ----------------------------
addEvent(window, "load", guWebSearch); 

function guWebSearch() {

    if(!document.getElementById('search-web') || !document.getElementById('web-search-field')) return;
    var radioButton=document.getElementById('search-web');
    var searchField = document.getElementById('web-search-field');
    
    document.getElementById('search-web').onclick = function () { doSearchBg(this); }
    
    document.getElementById('search-guardian').onclick =  function () { doSearchBg(this); }
    
    if(document.getElementById('search-section')) {
        document.getElementById('search-section').onclick =  function () { doSearchBg(this); }
    }
    
    
    function doSearchBg(elementRef) {
    
       if (elementRef.id!="search-web") {
      
            searchField.className = searchField.className.replace(/\bweb-search\b/, '');
       }else if(!searchField.className.match(/\bweb-search\b/)) {
            searchField.className = searchField.className + ' web-search';
       }
    }   
    
}
// ----------------------- search-bg.js ends here -----------------------------
// ----------------------- search.js starts here ------------------------------
function SearchForm(liveMode, browseHost, commentsSearchBaseUrl, webSearchBaseUrl) {

	if (document.getElementById("search-pluck-comments") && document.getElementById("search-pluck-comments").selected)  {
		window.location = commentsSearchBaseUrl +  '?search=' + escape(document.getElementById('web-search-field').value);
		return false;
	}

	var that = this;
	this.liveMode = liveMode;
	this.browseHost = browseHost;
	this.webSearchBaseUrl = webSearchBaseUrl;

	var searchForm = document.getElementById("search");
	if(searchForm) {
		addEvent(searchForm, 'submit', checkSubmit);
	}
	
	function checkSubmit(e) {
		var textField = document.getElementById('web-search-field');
		var form = document.getElementById('search');
		if (document.getElementById("search-web") && (document.getElementById("search-web").selected || document.getElementById("search-web").checked)) {
			if (liveMode) {
				_hbLink ('{header}{search-google}','{header}');
			}
			textField.name = 'q';
			form.action = that.webSearchBaseUrl;
		} else if (document.getElementById("search-section") && document.getElementById("search-section").selected) {
			if (liveMode) {
				_hbLink ('{header}{search-section}','{header}');
			}
			textField.name = 'search';
			form.action = that.browseHost + '/search/' + document.getElementById("search-section").value;
		} else {
			if (liveMode) {
				_hbLink ('{header}{search-gu}','{header}');
			}
			textField.name = 'search';
			form.action =  that.browseHost +  '/search';
		}
				
		return;
	}
	
}
// ------------------------- search.js ends here ------------------------------
// ------------------------ sendtoafriend.js starts here -------------------------------

addEvent(window, "load", sendAndHistoryByline); 
addEvent(window, "load", sendtoafriend); 

function sendtoafriend() {

	var linkToBlockMapping = {'sharelink' : 'send-share', 'sendlink' : 'send-email', 'historylink' : 'history', 'contactlink' : 'contact', 'sharelinkSidebar' : 'send-share-side', 'sendlinkSidebar' : 'send-email-side', 'contactlinkSidebar' : 'contact-side'};
	var linksToAddListenersTo = [];
	var blocksAvailable = [];
	for (var map in linkToBlockMapping) {
		blocksAvailable.push(linkToBlockMapping[map]);
		var link = document.getElementById(map);
		if (link) {
			linksToAddListenersTo.push(link);
		}
	}
	function hideAllElements() {
		hideElements(blocksAvailable);
	}
	for (var i=0; i < linksToAddListenersTo.length; i++)  {
		linksToAddListenersTo[i].onclick = function (e)  {
			var showBox = linkToBlockMapping[this.id];
			showOrHideCurrentElement(showBox);
			var hideBoxes = blocksAvailable.without(showBox);
			hideElements(hideBoxes);
			var closeButtons = $$('.send a.sendthis', '.send a.sendside');
			for (var j = 0; j < closeButtons.length; j++) {
				addEvent(closeButtons[j], 'click', hideAllElements);
			}
			if (!e) var e = window.event;
			if (e.clientY > 500) {
				window.scrollBy(0,200);
			}
			setWmodeOfMovies();
			return false;
		}
	}
}

function hideElements(ids) {
	for (var i=0; i < ids.length; i++) {
		var element = document.getElementById(ids[i]);
		if (element) {
			element.style.display = 'none';
		}
	}
}

function showOrHideCurrentElement(elementId) {
	var element = document.getElementById(elementId);
	if (!element) {
		return;
	}
	if (element.style.display === 'block') {
		element.style.display = 'none';
	} else {
		element.style.display = 'block';
	}
}

function setWmodeOfMovies() {
	var movies = document.getElementsByTagName('object');
	for (var i = 0; i < movies.length; i++) {
	    var object = movies[i];
 	    if (!isIE6 && !isIE7) {
	    	object.innerHTML = object.innerHTML.replace('<embed', '<param name="wmode" value="opaque" /><embed wmode="opaque"');
	    } else {
		   	object.outerHTML = object.outerHTML.replace('<PARAM', '<param name="wmode" value="opaque" /><param');
	    }
	}
}

function getElementsByClass (node, tag, cssClassName)
{
	var classElements = new Array();
	if (node == null) 
	{
		node = document;
	}
	if ( tag == null)
	{
		tag = '*';
	}
	
	var tempObj = node.getElementsByTagName(tag);
	var length = tempObj.length;
	
	var pattern = new RegExp("\\b" +cssClassName+ "\\b");
	for(var i = 0; i < length; i++)
	{
		if (pattern.test(tempObj[i].className))
		{
			classElements.push(tempObj[i]);
		}
	}
	return classElements;
}

function sendAndHistoryByline() {

if ( (!document.getElementById("history-byline") ) && (!document.getElementById("contact-byline") ) ) return;

	var els = document.getElementsByClassName('article-attributes');
	var list, listLink;
	if(!els){return;}
		for (var i = 0; i < els.length; i++) {
			
			//Check if there is a li with an id="contrib-shift"
			var hasContribShift = document.getElementById('contrib-shift');
			
			if (!hasContribShift) {
				list = document.createElement('li');
				list.className = 'history';
				
				listLink = document.createElement('a');
				listLink.className = 'sendbyline';
				listLink.setAttribute('id', 'historylink-byline');
				listLink.style.cursor = "pointer";
				listLink.appendChild(document.createTextNode('Article history'));
				list.appendChild(listLink);
				
				els[i].appendChild(list);
			}
			else {
				var childUls = els[i].getElementsByTagName('ul');
				for (var i = 0; i < childUls.length; i++) {
					list = document.createElement('li');
					list.className = 'history';
					
					listLink = document.createElement('a');
					listLink.className = 'sendbyline';
					listLink.setAttribute('id', 'historylink-byline');
					listLink.style.cursor = "pointer";
					listLink.appendChild(document.createTextNode('Article history'));
					list.appendChild(listLink);
					
					childUls[i].appendChild(list);
				}
			}
	}
	
	var shares=document.getElementsByTagName('a');
	for (var i=0;i<shares.length; i++)  {
	var shareclass=shares[i].className;
		if(shareclass.match('sendbyline'))  {
			shares[i].onclick=function (e)  {
			if (this.id=="historylink-byline") {
				var clicked = document.getElementById('history-byline');
				if (clicked.style.display == "block") {
					clicked.style.display = "none";
				}
				else {
					clicked.style.display = "block";
					//document.getElementById("contact-byline").style.display = "none";
					if (!e) var e = window.event;
						if (e.clientY>500)
							{
									window.scrollBy(0,0);
							}
				}
				return false;
			}
			
			else if (this.id=="contactlink-byline") {
				var clicked = document.getElementById('contact-byline');
				if (clicked.style.display == "block") {
					clicked.style.display = "none";
				}
				else {
					clicked.style.display = "block";
					//document.getElementById("history-byline").style.display = "none";
					if (!e) var e = window.event;
						if (e.clientY>500)
							{
									window.scrollBy(0,0);
							}
				}
				return false;
			}
			
			else {
				document.getElementById("history-byline").style.display = "none";
				//document.getElementById("contact-byline").style.display = "none";
			}
		return false;
		}
	}
}
}


// ------------------------ sendtoafriend.js ends here -------------------------------

/* The toggleQuizAnswers function is specifically for showing / hiding quiz answers.
Ideally, put all show / hide type functions in this file, or just have one to do everything.
SU 21/04/2008 */



if (document.getElementById && document.getElementsByTagName) {
	addEvent(window, "load", toggleQuizAnswers);
}
	
	
function toggleQuizAnswers() {				
	
	if(document.getElementById('show-answers-link')) {			    
    	var theLink = document.getElementById('show-answers-link');
		theLink.onclick = function() {
			var className = document.getElementById('quiz-answers').className;		
			if (className.indexOf('js-hider') > -1) {			
				document.getElementById('quiz-answers').className = className.replace('js-hider', 'shower');
				theLink.innerHTML='Hide answers';
			} else {					
				document.getElementById('quiz-answers').className = className.replace('shower', 'js-hider');
				theLink.innerHTML = 'Show answers';
			}
		}
	}
}
// ---------------------- signedin.js starts here -----------------------------


function UrlStack(cookieDomain) {
	this.escapePlus = function (value) {
		return escape(value).replace(/\+/, "%2B");
	};	
	
	this.cookieDomain = cookieDomain;
}

UrlStack.prototype.getCookieForUrlStack = function (name) {
	if (!document.cookie) {
		return '';
	}
	var dc = document.cookie;
	var prefix = name + "=";
	var begin = dc.indexOf("; " + prefix);
	
	if (begin == -1) {
		begin = dc.indexOf(prefix);
		if (begin != 0) return null;
	} else
		begin += 2;

	var end = document.cookie.indexOf(";", begin);
	if (end == -1)
	end = dc.length;
	return unescape(dc.substring(begin + prefix.length, end));
}

UrlStack.prototype.setCookieForUrlStack = function (name, value) {
  var curCookie = name + "=" + this.escapePlus(value) +
      "; domain="+this.cookieDomain+"; path=/"
  document.cookie = curCookie;
}

UrlStack.prototype.pushUrlOntoStack = function(url) {
	var cookie = this.getCookieForUrlStack('GU_ST');
	var stack = cookie ? cookie.split('|') : new Array();

	if(stack.length == 0 || (stack.length > 0 && stack[stack.length-1] != url)) {
		stack[stack.length] = url;
		this.setCookieForUrlStack('GU_ST',stack.join('|'));
	}
	return true;
}
UrlStack.prototype.URLStack_pop = function() {
	var cookie = '|' + this.getCookieForUrlStack('GU_ST');
	var x = cookie.lastIndexOf('|');
	var url = cookie.substring(x + 1);
	this.setCookieForUrlStack('GU_ST',cookie.substring(0, x));
	return url;
}

UrlStack.prototype.clearUrlStack = function() {
	if (this.getCookieForUrlStack('GU_ST') != '') {
		this.setCookieForUrlStack('GU_ST','');
	}
}

function signIn() {
	urlStack.pushUrlOntoStack(document.location);
	window.location="/Users/signin/0,,-1,00.html";
	return false;
}

function register() {
	urlStack.pushUrlOntoStack(document.location);
	window.location="/Users/register/1,,-1,00.html";
	return false;
}

function signOut() {
    urlStack.pushUrlOntoStack(document.location);
    window.location = "/Users/signout/tr/1,,,00.html";
    return false;
}

// ----------------------- signedin.js ends here ------------------------------


function sportsTabs() {
	
	function init() {
		var uls = document.getElementsByTagName("ul");
		for (i = 0; i < uls.length; i++) {
			if (uls[i].className === "tab-toggle") {
				uls[i].onclick = handleClick;
				var anchors = uls[i].getElementsByTagName("a");
				var cookie = readCookie("sportsPopupTab");
				if (cookie) {
					for (var j = 0; j < anchors.length; j++) {
						if (anchors[j].href.split("#")[1] === cookie) {
							renderTabs(anchors[j]);
						}
					}
				}
				else {
					renderTabs(anchors[0]);
				}
			}
		}
	}
	if(document.body.id === "sports-popup") {
		init();
	}
	
	function handleClick(e) {
		var target;
		if (!e) {
			e = window.event;
		}
		if (e.target) {
			target = e.target;
		}
		else if (e.srcElement) {
			target = e.srcElement;
		}
		if (target.nodeType && target.nodeType === 3) {
			target = target.parentNode;
		}
		if (target.href) {
			createCookie("sportsPopupTab", target.href.split("#")[1], 7);
			renderTabs(target);
		}
		
		return false;
	}
	
	function renderTabs(target) {
		showTabPane(target);
		
		var allLinks = target.parentNode.parentNode.getElementsByTagName('a');
		for (var j = 0; j < allLinks.length; j++) {
			allLinks[j].className = "inactive";
		}
		var body = document.getElementsByTagName("body")[0];
		if (target.id === "cricket-live-score") {
			target.className = "active";
			body.className = "cricket cricket-score";
		}
		else {
			target.className = "";
			if (body.className.match(/cricket/)) {
				body.className = "cricket";
			}
		}
		
	}
	
	function showTabPane(e) {
		hideTabPane(e);
		var id = e.href.match(/#(\w.+)/)[1];
		var element = document.getElementById(id);
		if (element) {
			element.style.display = 'block';
		}
	}
	
	function hideTabPane(e) {
		var togglenode = e.parentNode.parentNode.parentNode;
		var toggleid = togglenode.id + '-pane';
		var toggleable = togglenode.getElementsByTagName('div');
		for (var i = 0; i < toggleable.length; i++) {
			var divClass = toggleable[i].className;
			if (divClass.match(toggleid)) {
				toggleable[i].style.display = 'none';
			}
		}
	}
}

if (document.getElementById && document.getElementsByTagName) {
	addEvent(window, "load", sportsTabs);
}
// ----------------- textresizedetector.js starts here ------------------------
/** 
 *  @fileoverview TextResizeDetector
 * 
 *  Detects changes to font sizes when user changes browser settings
 *  <br>Fires a custom event with the following data:<br><br>
 * 	iBase  : base font size  	
 *	iDelta : difference in pixels from previous setting<br>
 *  	iSize  : size in pixel of text<br>
 *  
 *  * @author Lawrence Carvalho carvalho@uk.yahoo-inc.com
 * @version 1.0
 *
 *	REQUIRED BY: zones-navigation-rollover
 */

/**
 * @constructor
 */
TextResizeDetector = function() { 
    var el  = null;
	var iIntervalDelay  = 200;
	var iInterval = null;
	var iCurrSize = -1;
	var iBase = -1;
 	var aListeners = [];
 	var createControlElement = function() {
	 	el = document.createElement('span');
		el.id='textResizeControl';
		el.innerHTML='&nbsp;';
		el.style.position="absolute";
		el.style.left="-9999px";
		var elC = document.getElementById(TextResizeDetector.TARGET_ELEMENT_ID);
		// insert before firstChild
		if (elC)
			elC.insertBefore(el,elC.firstChild);
		iBase = iCurrSize = TextResizeDetector.getSize();
 	};

 	function _stopDetector() {
		window.clearInterval(iInterval);
		iInterval=null;
	};
	function _startDetector() {
		if (!iInterval) {
			iInterval = window.setInterval('TextResizeDetector.detect()',iIntervalDelay);
		}
	};
 	
 	 function _detect() {
 		var iNewSize = TextResizeDetector.getSize();
		
 		if(iNewSize!== iCurrSize) {
			for (var 	i=0;i <aListeners.length;i++) {
				aListnr = aListeners[i];
				var oArgs = {  iBase: iBase,iDelta:((iCurrSize!=-1) ? iNewSize - iCurrSize + 'px' : "0px"),iSize:iCurrSize = iNewSize};
				if (!aListnr.obj) {
					aListnr.fn('textSizeChanged',[oArgs]);
				}
				else  {
					aListnr.fn.apply(aListnr.obj,['textSizeChanged',[oArgs]]);
				}
			}

 		}
 		return iCurrSize;
 	};
	var onAvailable = function() {
		
		if (!TextResizeDetector.onAvailableCount_i ) {
			TextResizeDetector.onAvailableCount_i =0;
		}

		if (document.getElementById(TextResizeDetector.TARGET_ELEMENT_ID)) {
			TextResizeDetector.init();
			if (TextResizeDetector.USER_INIT_FUNC){
				TextResizeDetector.USER_INIT_FUNC();
			}
			TextResizeDetector.onAvailableCount_i = null;
		}
		else {
			if (TextResizeDetector.onAvailableCount_i<600) {
	  	 	    TextResizeDetector.onAvailableCount_i++;
				setTimeout(onAvailable,200)
			}
		}
	};
	setTimeout(onAvailable,500);

 	return {
		 	/*
		 	 * Initializes the detector
		 	 * 
		 	 * @param {String} sId The id of the element in which to create the control element
		 	 */
		 	init: function() {
		 		
		 		createControlElement();		
				_startDetector();
 			},
			/**
			 * Adds listeners to the ontextsizechange event. 
			 * Returns the base font size
			 * 
			 */
 			addEventListener:function(fn,obj,bScope) {
				aListeners[aListeners.length] = {
					fn: fn,
					obj: obj
				}
				return iBase;
			},
			/**
			 * performs the detection and fires textSizeChanged event
			 * @return the current font size
			 * @type {integer}
			 */
 			detect:function() {
 				return _detect();
 			},
 			/**
 			 * Returns the height of the control element
 			 * 
			 * @return the current height of control element
			 * @type {integer}
 			 */
 			getSize:function() {
	 				var iSize;
			 		return el.offsetHeight;
		 		
		 		
 			},
 			/**
 			 * Stops the detector
 			 */
 			stopDetector:function() {
				return _stopDetector();
			},
			/*
			 * Starts the detector
			 */
 			startDetector:function() {
				return _startDetector();
			}
 	}
 }();

TextResizeDetector.TARGET_ELEMENT_ID = 'doc';
TextResizeDetector.USER_INIT_FUNC = null;



// ------------------ textresizedetector.js ends here -------------------------
// ------------------- textresizeinit.js starts here --------------------------
/*
	detect the users font size and adjust the layout appropriately
	
	REQUIRED BY: zones-navigation-rollover
*/
 	function init()  {
	   var iBase = TextResizeDetector.addEventListener(onFontResize,null);
	   var bodyTag = document.getElementById('wrapper');
	   if(bodyTag)  {
		   if (iBase>27)  {
				bodyTag.className='large-type';
			}
		}
	}
	//id of element to check for and insert control
	TextResizeDetector.TARGET_ELEMENT_ID = 'wrapper';
	//function to call once TextResizeDetector has init'd
	TextResizeDetector.USER_INIT_FUNC = init;
		function onFontResize(e,args) {
			// to aid navigation roll-overs
			zone_navigation_rollover.simpleNavResizer();
			// end of aid to navigaiton roll-overs
			var bodyTag = document.getElementById('wrapper');
			if(bodyTag){
				//27 is the last font size for the standard layout
				if (args[0].iSize>27)  {
					bodyTag.className='large-type';
				}
				if (args[0].iSize<26)
				{
					bodyTag.className='';
				}
			}
		}
// -------------------- textresizeinit.js ends here ---------------------------
// -------------------- togglingTabs.js starts here ---------------------------
addEvent(window, "load", tabs); 

function tabs()
{
	if(!document.getElementById('blogging-section')) return;
	
	if(!document.getElementById('most-commented-entries')){
		return;
	}
	
	document.getElementById('most-commented-entries').className = "active";
	
	var buttons=document.getElementById('blogging-section').getElementsByTagName('span');
	var bloggies=document.getElementById('blogging-section');
	
	for(var i=0; i<buttons.length; i++) {
		buttons[i].onclick= function (){
			var parent= this.parentNode
			if(this.id=="recent-entries") {
			
				this.className = "active";
				document.getElementById('most-commented-entries').className = "inactive";
			
				if(parent.getElementsByTagName('ul')[0].className.match(/\bhidden\b/)){
					toggleClass(parent);
					toggleClass(document.getElementById('most-commented-entries').parentNode);
				}
			} else {
				
				this.className = "active";
				document.getElementById('recent-entries').className = "inactive";
			
				if(parent.getElementsByTagName('ul')[0].className.match(/\bhidden\b/)){
					toggleClass(parent);
					toggleClass(document.getElementById('recent-entries').parentNode);
				}
		}
			
			function toggleClass(element){
						
				var currentClass=element.getElementsByTagName('ul')[0].className;
				if(currentClass.match(/\bvisible\b/)) currentClass=currentClass.replace(/visible/ , 'hidden');
				else if(currentClass.match(/\hidden\b/)) currentClass=currentClass.replace(/hidden/ , 'visible');	
				element.getElementsByTagName('ul')[0].className=currentClass;
			}

			
			
		}
	}
}
// -------------------- togglingTabs.js ends here ----------------------------





// -------------------- generic togglingTabs.js starts here ----------------------------

addEvent(window, "load", generictabs); 

function generictabs(activetab)
{
	if(!document.getElementById('tab-section')) return;
	
	document.getElementById('tab-default').className = "active";
	
	var buttons=document.getElementById('tab-section').getElementsByTagName('span');
	var bloggies=document.getElementById('tab-section');
	
	for(var i=0; i<buttons.length; i++) {
		buttons[i].onclick= function (){
			var parent= this.parentNode
			if(this.id=="tab-default") {
			
				this.className = "active";
				document.getElementById('tab-other').className = "inactive";
			
				if(parent.getElementsByTagName('ul')[0].className.match(/\bhidden\b/)){
					toggleClass(parent);
					toggleClass(document.getElementById('tab-other').parentNode);
				}
			} else {
				
				this.className = "active";
				document.getElementById('tab-default').className = "inactive";
			
				if(parent.getElementsByTagName('ul')[0].className.match(/\bhidden\b/)){
					toggleClass(parent);
					toggleClass(document.getElementById('tab-default').parentNode);
				}
		}
			
			function toggleClass(element){
						
				var currentClass=element.getElementsByTagName('ul')[0].className;
				if(currentClass.match(/\bvisible\b/)) currentClass=currentClass.replace(/visible/ , 'hidden');
				else if(currentClass.match(/\hidden\b/)) currentClass=currentClass.replace(/hidden/ , 'visible');	
				element.getElementsByTagName('ul')[0].className=currentClass;
			}

			
			
		}
	}
}

// -------------------- generic togglingTabs.js ends here ----------------------------
// -------------------- travel-mask.js starts here ----------------------------
function maskImages()  {
	var images = []; 
	// we need to copy the images into an array because the object returned from
	// getElementsByTagName is kept up to date - so as we add images, they appear
	// in the 'array', leading to repeated insertions.
	if(document.getElementsByTagName('body')[0].className.match('commercial'))  {
		forEachElementOf(document.getElementsByTagName('img'), function(image) {
			images.push(image);
		});
	} else {
		var divs = document.getElementsByTagName('div');
		forEachElementOf(divs, function (div) {
			if(div.className.match(/\bcommercial\b/))  {
				forEachElementOf(div.getElementsByTagName('img'), function(image) {
					images.push(image);
				});
			}
		});
	}
	
	var mask = /\bmask\b/;
	function imageDoesntAlreadyHaveOverlay(image) {
		if (image.nextSibling && image.nextSibling.className) {
			return ! image.nextSibling.className.match(mask);
		}
		return true;
	}
	
	forEachElementOf(images, function (image) {
		if (imageDoesntAlreadyHaveOverlay(image)) {
			applyImageMaskImmediate(image, 'roundedcorners');
		}
	});
}

addEvent(window, "load", maskImages);
// --------------------- travel-mask.js ends here -----------------------------
// ------------------------ ufo.js starts here --------------------------------
/*	Unobtrusive Flash Objects (UFO) v3.21 <http://www.bobbyvandersluis.com/ufo/>
	Copyright 2005, 2006 Bobby van der Sluis
	This software is licensed under the CC-GNU LGPL <http://creativecommons.org/licenses/LGPL/2.1/>
*/

var UFO = {
	req: ["movie", "width", "height", "majorversion", "build"],
	opt: ["play", "loop", "menu", "quality", "scale", "salign", "wmode", "bgcolor", "base", "flashvars", "devicefont", "allowscriptaccess", "seamlesstabbing", "allowfullscreen"],
	optAtt: ["id", "name", "align"],
	optExc: ["swliveconnect"],
	ximovie: "ufo.swf",
	xiwidth: "215",
	xiheight: "138",
	ua: navigator.userAgent.toLowerCase(),
	pluginType: "",
	fv: [0,0],
	foList: [],
		
	create: function(FO, id) {
		if (!UFO.uaHas("w3cdom") || UFO.uaHas("ieMac")) return;
		UFO.getFlashVersion();
		UFO.foList[id] = UFO.updateFO(FO);
		UFO.createCSS("#" + id, "visibility:hidden;");
		UFO.domLoad(id);
	},

	updateFO: function(FO) {
		if (typeof FO.xi != "undefined" && FO.xi == "true") {
			if (typeof FO.ximovie == "undefined") FO.ximovie = UFO.ximovie;
			if (typeof FO.xiwidth == "undefined") FO.xiwidth = UFO.xiwidth;
			if (typeof FO.xiheight == "undefined") FO.xiheight = UFO.xiheight;
		}
		FO.mainCalled = false;
		return FO;
	},

	domLoad: function(id) {
		var _t = setInterval(function() {
			if ((document.getElementsByTagName("body")[0] != null || document.body != null) && document.getElementById(id) != null) {
				UFO.main(id);
				clearInterval(_t);
			}
		}, 250);
		if (typeof document.addEventListener != "undefined") {
			document.addEventListener("DOMContentLoaded", function() { UFO.main(id); clearInterval(_t); } , null); // Gecko, Opera 9+
		}
	},

	main: function(id) {
		var _fo = UFO.foList[id];
		if (_fo.mainCalled) return;
		UFO.foList[id].mainCalled = true;
		document.getElementById(id).style.visibility = "hidden";
		if (UFO.hasRequired(id)) {
			if (UFO.hasFlashVersion(parseInt(_fo.majorversion, 10), parseInt(_fo.build, 10))) {
				if (typeof _fo.setcontainercss != "undefined" && _fo.setcontainercss == "true") UFO.setContainerCSS(id);
				UFO.writeSWF(id);
			}
			else if (_fo.xi == "true" && UFO.hasFlashVersion(6, 65)) {
				UFO.createDialog(id);
			}
		}
		document.getElementById(id).style.visibility = "visible";
	},
	
	createCSS: function(selector, declaration) {
		var _h = document.getElementsByTagName("head")[0]; 
		var _s = UFO.createElement("style");
		if (!UFO.uaHas("ieWin")) _s.appendChild(document.createTextNode(selector + " {" + declaration + "}")); // bugs in IE/Win
		_s.setAttribute("type", "text/css");
		_s.setAttribute("media", "screen"); 
		_h.appendChild(_s);
		if (UFO.uaHas("ieWin") && document.styleSheets && document.styleSheets.length > 0) {
			var _ls = document.styleSheets[document.styleSheets.length - 1];
			if (typeof _ls.addRule == "object") _ls.addRule(selector, declaration);
		}
	},
	
	setContainerCSS: function(id) {
		var _fo = UFO.foList[id];
		var _w = /%/.test(_fo.width) ? "" : "px";
		var _h = /%/.test(_fo.height) ? "" : "px";
		UFO.createCSS("#" + id, "width:" + _fo.width + _w +"; height:" + _fo.height + _h +";");
		if (_fo.width == "100%") {
			UFO.createCSS("body", "margin-left:0; margin-right:0; padding-left:0; padding-right:0;");
		}
		if (_fo.height == "100%") {
			UFO.createCSS("html", "height:100%; overflow:hidden;");
			UFO.createCSS("body", "margin-top:0; margin-bottom:0; padding-top:0; padding-bottom:0; height:100%;");
		}
	},

	createElement: function(el) {
		return (UFO.uaHas("xml") && typeof document.createElementNS != "undefined") ?  document.createElementNS("http://www.w3.org/1999/xhtml", el) : document.createElement(el);
	},

	createObjParam: function(el, aName, aValue) {
		var _p = UFO.createElement("param");
		_p.setAttribute("name", aName);	
		_p.setAttribute("value", aValue);
		el.appendChild(_p);
	},

	uaHas: function(ft) {
		var _u = UFO.ua;
		switch(ft) {
			case "w3cdom":
				return (typeof document.getElementById != "undefined" && typeof document.getElementsByTagName != "undefined" && (typeof document.createElement != "undefined" || typeof document.createElementNS != "undefined"));
			case "xml":
				var _m = document.getElementsByTagName("meta");
				var _l = _m.length;
				for (var i = 0; i < _l; i++) {
					if (/content-type/i.test(_m[i].getAttribute("http-equiv")) && /xml/i.test(_m[i].getAttribute("content"))) return true;
				}
				return false;
			case "ieMac":
				return /msie/.test(_u) && !/opera/.test(_u) && /mac/.test(_u);
			case "ieWin":
				return /msie/.test(_u) && !/opera/.test(_u) && /win/.test(_u);
			case "gecko":
				return /gecko/.test(_u) && !/applewebkit/.test(_u);
			case "opera":
				return /opera/.test(_u);
			case "safari":
				return /applewebkit/.test(_u);
			default:
				return false;
		}
	},
	
	getFlashVersion: function() {
		if (UFO.fv[0] != 0) return;  
		if (navigator.plugins && typeof navigator.plugins["Shockwave Flash"] == "object") {
			UFO.pluginType = "npapi";
			var _d = navigator.plugins["Shockwave Flash"].description;
			if (typeof _d != "undefined") {
				_d = _d.replace(/^.*\s+(\S+\s+\S+$)/, "$1");
				var _m = parseInt(_d.replace(/^(.*)\..*$/, "$1"), 10);
				var _r = /r/.test(_d) ? parseInt(_d.replace(/^.*r(.*)$/, "$1"), 10) : 0;
				UFO.fv = [_m, _r];
			}
		}
		else if (window.ActiveXObject) {
			UFO.pluginType = "ax";
			try { // avoid fp 6 crashes
				var _a = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.7");
			}
			catch(e) {
				try { 
					var _a = new ActiveXObject("ShockwaveFlash.ShockwaveFlash.6");
					UFO.fv = [6, 0];
					_a.AllowScriptAccess = "always"; // throws if fp < 6.47 
				}
				catch(e) {
					if (UFO.fv[0] == 6) return;
				}
				try {
					var _a = new ActiveXObject("ShockwaveFlash.ShockwaveFlash");
				}
				catch(e) {}
			}
			if (typeof _a == "object") {
				var _d = _a.GetVariable("$version"); // bugs in fp 6.21/6.23
				if (typeof _d != "undefined") {
					_d = _d.replace(/^\S+\s+(.*)$/, "$1").split(",");
					UFO.fv = [parseInt(_d[0], 10), parseInt(_d[2], 10)];
				}
			}
		}
	},

	hasRequired: function(id) {
		var _l = UFO.req.length;
		for (var i = 0; i < _l; i++) {
			if (typeof UFO.foList[id][UFO.req[i]] == "undefined") return false;
		}
		return true;
	},
	
	hasFlashVersion: function(major, release) {
		return (UFO.fv[0] > major || (UFO.fv[0] == major && UFO.fv[1] >= release)) ? true : false;
	},

	writeSWF: function(id) {
		var _fo = UFO.foList[id];
		var _e = document.getElementById(id);
		if (UFO.pluginType == "npapi") {
			if (UFO.uaHas("gecko") || UFO.uaHas("xml")) {
				while(_e.hasChildNodes()) {
					_e.removeChild(_e.firstChild);
				}
				var _obj = UFO.createElement("object");
				_obj.setAttribute("type", "application/x-shockwave-flash");
				_obj.setAttribute("data", _fo.movie);
				_obj.setAttribute("width", _fo.width);
				_obj.setAttribute("height", _fo.height);
				var _l = UFO.optAtt.length;
				for (var i = 0; i < _l; i++) {
					if (typeof _fo[UFO.optAtt[i]] != "undefined") _obj.setAttribute(UFO.optAtt[i], _fo[UFO.optAtt[i]]);
				}
				var _o = UFO.opt.concat(UFO.optExc);
				var _l = _o.length;
				for (var i = 0; i < _l; i++) {
					if (typeof _fo[_o[i]] != "undefined") UFO.createObjParam(_obj, _o[i], _fo[_o[i]]);
				}
				_e.appendChild(_obj);
			}
			else {
				var _emb = "";
				var _o = UFO.opt.concat(UFO.optAtt).concat(UFO.optExc);
				var _l = _o.length;
				for (var i = 0; i < _l; i++) {
					if (typeof _fo[_o[i]] != "undefined") _emb += ' ' + _o[i] + '="' + _fo[_o[i]] + '"';
				}
				_e.innerHTML = '<embed type="application/x-shockwave-flash" src="' + _fo.movie + '" width="' + _fo.width + '" height="' + _fo.height + '" pluginspage="http://www.macromedia.com/go/getflashplayer"' + _emb + '></embed>';
			}
		}
		else if (UFO.pluginType == "ax") {
			var _objAtt = "";
			var _l = UFO.optAtt.length;
			for (var i = 0; i < _l; i++) {
				if (typeof _fo[UFO.optAtt[i]] != "undefined") _objAtt += ' ' + UFO.optAtt[i] + '="' + _fo[UFO.optAtt[i]] + '"';
			}
			var _objPar = "";
			var _l = UFO.opt.length;
			for (var i = 0; i < _l; i++) {
				if (typeof _fo[UFO.opt[i]] != "undefined") _objPar += '<param name="' + UFO.opt[i] + '" value="' + _fo[UFO.opt[i]] + '" />';
			}
			var _p = window.location.protocol == "https:" ? "https:" : "http:";
			_e.innerHTML = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"' + _objAtt + ' width="' + _fo.width + '" height="' + _fo.height + '" codebase="' + _p + '//download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=' + _fo.majorversion + ',0,' + _fo.build + ',0"><param name="movie" value="' + _fo.movie + '" />' + _objPar + '</object>';
		}
	},
		
	createDialog: function(id) {
		var _fo = UFO.foList[id];
		UFO.createCSS("html", "height:100%; overflow:hidden;");
		UFO.createCSS("body", "height:100%; overflow:hidden;");
		UFO.createCSS("#xi-con", "position:absolute; left:0; top:0; z-index:1000; width:100%; height:100%; background-color:#fff; filter:alpha(opacity:75); opacity:0.75;");
		UFO.createCSS("#xi-dia", "position:absolute; left:50%; top:50%; margin-left: -" + Math.round(parseInt(_fo.xiwidth, 10) / 2) + "px; margin-top: -" + Math.round(parseInt(_fo.xiheight, 10) / 2) + "px; width:" + _fo.xiwidth + "px; height:" + _fo.xiheight + "px;");
		var _b = document.getElementsByTagName("body")[0];
		var _c = UFO.createElement("div");
		_c.setAttribute("id", "xi-con");
		var _d = UFO.createElement("div");
		_d.setAttribute("id", "xi-dia");
		_c.appendChild(_d);
		_b.appendChild(_c);
		var _mmu = window.location;
		if (UFO.uaHas("xml") && UFO.uaHas("safari")) {
			var _mmd = document.getElementsByTagName("title")[0].firstChild.nodeValue = document.getElementsByTagName("title")[0].firstChild.nodeValue.slice(0, 47) + " - Flash Player Installation";
		}
		else {
			var _mmd = document.title = document.title.slice(0, 47) + " - Flash Player Installation";
		}
		var _mmp = UFO.pluginType == "ax" ? "ActiveX" : "PlugIn";
		var _uc = typeof _fo.xiurlcancel != "undefined" ? "&xiUrlCancel=" + _fo.xiurlcancel : "";
		var _uf = typeof _fo.xiurlfailed != "undefined" ? "&xiUrlFailed=" + _fo.xiurlfailed : "";
		UFO.foList["xi-dia"] = { movie:_fo.ximovie, width:_fo.xiwidth, height:_fo.xiheight, majorversion:"6", build:"65", flashvars:"MMredirectURL=" + _mmu + "&MMplayerType=" + _mmp + "&MMdoctitle=" + _mmd + _uc + _uf };
		UFO.writeSWF("xi-dia");
	},

	expressInstallCallback: function() {
		var _b = document.getElementsByTagName("body")[0];
		var _c = document.getElementById("xi-con");
		_b.removeChild(_c);
		UFO.createCSS("body", "height:auto; overflow:auto;");
		UFO.createCSS("html", "height:auto; overflow:auto;");
	},

	cleanupIELeaks: function() {
		var _o = document.getElementsByTagName("object");
		var _l = _o.length
		for (var i = 0; i < _l; i++) {
			_o[i].style.display = "none";
			for (var x in _o[i]) {
				if (typeof _o[i][x] == "function") {
					_o[i][x] = null;
				}
			}
		}
	}

};

if (typeof window.attachEvent != "undefined" && UFO.uaHas("ieWin")) {
	window.attachEvent("onunload", UFO.cleanupIELeaks);
}
// ------------------------- ufo.js ends here ---------------------------------
// -------------------- update-content-mask.js starts here ----------------------------

function maskMediaImages() {
	// must do this because 'images' is dynamically updated by DOM - see travel-mask.js
    var images = document.getElementsByTagName('img');
    var imagesToProcess = [];
    forEachElementOf(images, function (image) {
        imagesToProcess.push(image);
    });

    var maskClass = /([a-zA-Z]+)-mask/;
    var anchorOrDiv = /^a$|^div/i;
    forEachElementOf(imagesToProcess, function (image) {
        var matchMaskClass = maskClass.exec(image.className); 
        if (matchMaskClass && image.parentNode.nodeName.match(anchorOrDiv)) {
            var maskName = matchMaskClass[1];
            applyImageMaskImmediate(image, maskName);
        }
    });

}

addEvent(window, "load", maskMediaImages);

// --------------------- update-content-mask.js ends here -----------------------------
/*
	this script shows the roll-overs for the crumb navigation

	if javascript is turned off no rollovers appear
	
	REQUIRES: textresizedetector and textresizeinit to run before this
	
*/

( function () {
	var timeout;
	
	function pollForLoad () {
		var crumbNav = document.getElementById("crumb-nav");
		if (crumbNav) {
			zone_navigation_rollover.setupNavRolloverEvents(crumbNav);
			clearInterval (timeout);
		}
	}

	timeout = setInterval(pollForLoad, 500);
} ) ();


zone_navigation_rollover = ( function () {
	var zone_navigation_rollover = {};
	
	function checkClass(navItem,class1) {
	      var regExpString = '\\b'+class1+'\\b';
	      var regularExpression = new RegExp(regExpString);
	      return regularExpression.test(navItem.className);
	}
	
	var currentPositionNames = [/\bfirst-end\b/, 
					/\bfirst-hover-end\b/,
					/\bfirst-end-hover\b/,
					/\bfirst-second\b/,
					/\bfirst-hover-second\b/,
					/\bfirst-second-hover\b/];
	var localNavItemMatcher = /\bfirst-local-item\b/;
					
	// this is used instead of getting the current background position as it is not reliably implemented across browser.
	var currentYPositions = [-13,-114,-215,-316,-417,-518];
					
	function removeClass(classes, className) {
  		for(var i=0; i<classes.length; i++){
  			if(classes[i] === className) {
  				classes.splice(i, 1);
  				return;
  			}
  		}
	}
	
	function addClass(classes, className) {
   		classes.push( className );
	}
	
	function determineChangesToSwapClassesOn(navItem,class1,class2){
		var classes = navItem.className.split(' ');
    	removeClass(classes, class1);
    	addClass(classes, class2);
    	var classString = classes.join(' ');
		
		var updateInfo = zone_navigation_rollover.determineBackgroundPositionAndPadding(classString);
		
    	updateInfo.className = classString;
    	
    	return updateInfo;
	}
		
	function eventProvider(navItem, thisClass, thisClassHover, previousNavItem, previousClass, previousClassHover) {
		
		//check for focus already
		navItem.focused = false;
		
		//accommodate the resizing of text
		var navItemInfo = zone_navigation_rollover.determineBackgroundPositionAndPadding(navItem.className);
		zone_navigation_rollover.updateNavItems(navItem, navItemInfo);
		
		navItem.hasFocus = function () { 
			return this.focused; 
		};
		
		navItem.onmouseover = function () {
			var navItemInfo, previousNavItemInfo;
			
			navItemInfo = determineChangesToSwapClassesOn(this, thisClass, thisClassHover);
			if (previousNavItem) { 
				previousNavItemInfo = determineChangesToSwapClassesOn( previousNavItem, previousClass, previousClassHover); 
			}
			
			zone_navigation_rollover.updateNavItems( navItem, navItemInfo, previousNavItem, previousNavItemInfo);
		};
		
		navItem.onmouseout = function () {
			var navItemInfo, previousNavItemInfo;
				
			if (!this.focused) {		 
				navItemInfo = determineChangesToSwapClassesOn( this, thisClassHover, thisClass);
				if (previousNavItem) { 
					previousNavItemInfo = determineChangesToSwapClassesOn( previousNavItem, previousClassHover, previousClass); 
				}
			
				zone_navigation_rollover.updateNavItems( navItem, navItemInfo, previousNavItem, previousNavItemInfo);
			}
		};
		navItem.onfocus = function () {
			var navItemInfo, previousNavItemInfo;
				
			this.focused = true;
			if (!checkClass(this, thisClassHover)) {
				navItemInfo = determineChangesToSwapClassesOn( this, thisClass, thisClassHover);
				if (previousNavItem) { 
					previousNavItemInfo = determineChangesToSwapClassesOn( previousNavItem, previousClass, previousClassHover);
				}
				
				zone_navigation_rollover.updateNavItems( navItem, navItemInfo, previousNavItem, previousNavItemInfo);
			}
		};
		navItem.onblur = function () {
			var navItemInfo, previousNavItemInfo;
				
			this.focused = false;
			navItemInfo = determineChangesToSwapClassesOn( this, thisClassHover, thisClass);
			if (previousNavItem) { 
				previousNavItemInfo = determineChangesToSwapClassesOn( previousNavItem, previousClassHover, previousClass); 
			}
			
			zone_navigation_rollover.updateNavItems( navItem, navItemInfo, previousNavItem, previousNavItemInfo);
		};
	}
	
	/* if the text size is different from normal, center the arrow. */
	zone_navigation_rollover.determineBackgroundPositionAndPadding = function(classString) {
		var textSize = Number(TextResizeDetector.getSize());
		var result = {};
		
		if (classString && textSize) {
			if (textSize < 40) {
					
				// 16px specified in base.css for navigation
				var yPosition = ((textSize - 16) / 2);
				var currentPlacementY = 0;
				
				for (var i = 0; i < currentPositionNames.length; i++) {
					if (currentPositionNames[i].test(classString)) {
						currentPlacementY = currentYPositions[i];
					}
				}
				
				var newYPosition = yPosition + currentPlacementY;
				result.backgroundPosition = "100% " + newYPosition + "px";
				
				// add a bit of padding when text size goes up
				var isLocalNavItem = localNavItemMatcher.test(classString);
			
				if (!isLocalNavItem) {
					if (textSize > 20) {
						result.paddingRight = "20px";
					} else if (textSize <= 20) {
						result.paddingRight = "15px";
					}
				} else {
					result.paddingRight = "5px";
				}
			} else { 
				result.backgroundPosition = "-460px 0";
				result.paddingRight = "5px";
			}
		}
		return result;
	};
	
	zone_navigation_rollover.updateNavItems = function(navItem, navItemInfo, previousNavItem, previousNavItemInfo) {
		navItem.style.backgroundPosition = navItemInfo.backgroundPosition;
    	navItem.className = navItemInfo.className ? navItemInfo.className : navItem.className;
		navItem.style.paddingRight = navItemInfo.paddingRight;
		if(previousNavItemInfo) {
			previousNavItem.style.backgroundPosition = previousNavItemInfo.backgroundPosition;
	    	previousNavItem.className = previousNavItemInfo.className;
			previousNavItem.style.paddingRight = previousNavItemInfo.paddingRight;
		}
	};
	
	zone_navigation_rollover.setupNavRolloverEvents = function(crumbNav) {
	
		var numOfCrumbs = 0;
		var previous = null;
		var crumb;
		var crumbs = crumbNav.getElementsByTagName('li');
		numOfCrumbs = crumbs.length;
		
		if (numOfCrumbs === 1) {
			/* the only one */
			crumb = crumbs[0].getElementsByTagName('a')[0];
			eventProvider(crumb, 'first-end', 'first-hover-end');
		}
		else if (numOfCrumbs > 1) {
			for(var i=0;i<numOfCrumbs;i++){
				crumb = crumbs[i].getElementsByTagName('a')[0];
				/* first and not the only one */
				if (i === 0) {
					eventProvider(crumb, 'first-second', 'first-hover-second');
				}	
				/* the last one */	
				if (numOfCrumbs === (i + 1)) {
					previous = crumbs[i - 1].getElementsByTagName('a')[0];	
					eventProvider(crumb, 'first-end', 'first-hover-end', previous, 'first-second', 'first-second-hover');
				}
				/* the second one of many */
				if (numOfCrumbs > 2 && i === 1) { 
					previous = crumbs[i - 1].getElementsByTagName('a')[0];	
					eventProvider(crumb, 'first-second', 'first-hover-second', previous, 'first-second', 'first-second-hover');
				}
			}
		}
		
		/* roll-over effect with tags on last crumb */
		var localNav = document.getElementById('local-nav');
		if (localNav) {
			var localNavItems = localNav.getElementsByTagName('a');
			var lastCrumb = crumbs[numOfCrumbs-1].getElementsByTagName('a')[0];
			if(lastCrumb){
				eventProvider(localNavItems[0],'first-local-item','first-local-item',lastCrumb,'first-end','first-end-hover');
			}
		}
	};
	
	/* textresizedetector notifies us of a text change so that we can change the arrow */
	zone_navigation_rollover.simpleNavResizer = function(){
		if (!document.getElementById) {
			return false;
		}
			
		var crumbNavItems = document.getElementById("crumb-nav") ? document.getElementById("crumb-nav").getElementsByTagName('a') : false;
		
		var textSize = Number(TextResizeDetector.getSize());
		var updateInfo;
		if (crumbNavItems) {
			for (var i = 0; i < crumbNavItems.length; i++) {
				if (Number(textSize) < 40) {
					updateInfo = zone_navigation_rollover.determineBackgroundPositionAndPadding(crumbNavItems[i].className);
				} else { 
					updateInfo = {};
					updateInfo.backgroundPosition = "-460px 0";
					updateInfo.paddingRight = "5px";
				}
				zone_navigation_rollover.updateNavItems(crumbNavItems[i], updateInfo);
			}
		}
	}
	
	return zone_navigation_rollover;
} ) ();


// ---------------------- zone-navigation-rollover.js ends here -----------------------------