var Prototype = {
 Version: '1.4.0',
 ScriptFragment: '(?:<script.*?>)((\n|\r|.)*?)(?:<\/script>)',
 emptyFunction: function() {},
 K: function(x) {return x}
}
var Class = {
 create: function() {
 return function() {
 this.initialize.apply(this, arguments);
 }
 }
}
var Abstract = new Object();
Object.extend = function(destination, source) {
 for (property in source) {
 destination[property] = source[property];
 }
 return destination;
}
Object.inspect = function(object) {
 try {
 if (object == undefined) return 'undefined';
 if (object == null) return 'null';
 return object.inspect ? object.inspect() : object.toString();
 } catch (e) {
 if (e instanceof RangeError) return '...';
 throw e;
 }
}
Function.prototype.bind = function() {
 var __method = this, args = $A(arguments), object = args.shift();
 return function() {
 return __method.apply(object, args.concat($A(arguments)));
 }
}
Function.prototype.bindAsEventListener = function(object) {
 var __method = this;
 return function(event) {
 return __method.call(object, event || window.event);
 }
}
Object.extend(Number.prototype, {
 toColorPart: function() {
 var digits = this.toString(16);
 if (this < 16) return '0' + digits;
 return digits;
 },
 succ: function() {
 return this + 1;
 },
 times: function(iterator) {
 $R(0, this, true).each(iterator);
 return this;
 }
});
var Try = {
 these: function() {
 var returnValue;
 for (var i = 0; i < arguments.length; i++) {
 var lambda = arguments[i];
 try {
 returnValue = lambda();
 break;
 } catch (e) {}
 }
 return returnValue;
 }
}
var PeriodicalExecuter = Class.create();
PeriodicalExecuter.prototype = {
 initialize: function(callback, frequency) {
 this.callback = callback;
 this.frequency = frequency;
 this.currentlyExecuting = false;
 this.registerCallback();
 },
 registerCallback: function() {
 setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
 },
 onTimerEvent: function() {
 if (!this.currentlyExecuting) {
 try {
 this.currentlyExecuting = true;
 this.callback();
 } finally {
 this.currentlyExecuting = false;
 }
 }
 }
}
function $() {
 var elements = new Array();
 for (var i = 0; i < arguments.length; i++) {
 var element = arguments[i];
 if (typeof element == 'string')
 element = document.getElementById(element);
 if (arguments.length == 1)
 return element;
 elements.push(element);
 }
 return elements;
}
Object.extend(String.prototype, {
 stripTags: function() {
 return this.replace(/<\/?[^>]+>/gi, '');
 },
 stripScripts: function() {
 return this.replace(new RegExp(Prototype.ScriptFragment, 'img'), '');
 },
 extractScripts: function() {
 var matchAll = new RegExp(Prototype.ScriptFragment, 'img');
 var matchOne = new RegExp(Prototype.ScriptFragment, 'im');
 return (this.match(matchAll) || []).map(function(scriptTag) {
 return (scriptTag.match(matchOne) || ['', ''])[1];
 });
 },
 evalScripts: function() {
 return this.extractScripts().map(eval);
 },
 escapeHTML: function() {
 var div = document.createElement('div');
 var text = document.createTextNode(this);
 div.appendChild(text);
 return div.innerHTML;
 },
 unescapeHTML: function() {
 var div = document.createElement('div');
 div.innerHTML = this.stripTags();
 return div.childNodes[0] ? div.childNodes[0].nodeValue : '';
 },
 toQueryParams: function() {
 var pairs = this.match(/^\??(.*)$/)[1].split('&');
 return pairs.inject({}, function(params, pairString) {
 var pair = pairString.split('=');
 params[pair[0]] = pair[1];
 return params;
 });
 },
 toArray: function() {
 return this.split('');
 },
 camelize: function() {
 var oStringList = this.split('-');
 if (oStringList.length == 1) return oStringList[0];
 var camelizedString = this.indexOf('-') == 0
 ? oStringList[0].charAt(0).toUpperCase() + oStringList[0].substring(1)
 : oStringList[0];
 for (var i = 1, len = oStringList.length; i < len; i++) {
 var s = oStringList[i];
 camelizedString += s.charAt(0).toUpperCase() + s.substring(1);
 }
 return camelizedString;
 },
 inspect: function() {
 return "'" + this.replace('\\', '\\\\').replace("'", '\\\'') + "'";
 }
});
String.prototype.parseQuery = String.prototype.toQueryParams;
var $break = new Object();
var $continue = new Object();
var Enumerable = {
 each: function(iterator) {
 var index = 0;
 try {
 this._each(function(value) {
 try {
 iterator(value, index++);
 } catch (e) {
 if (e != $continue) throw e;
 }
 });
 } catch (e) {
 if (e != $break) throw e;
 }
 },
 all: function(iterator) {
 var result = true;
 this.each(function(value, index) {
 result = result && !!(iterator || Prototype.K)(value, index);
 if (!result) throw $break;
 });
 return result;
 },
 any: function(iterator) {
 var result = true;
 this.each(function(value, index) {
 if (result = !!(iterator || Prototype.K)(value, index))
 throw $break;
 });
 return result;
 },
 collect: function(iterator) {
 var results = [];
 this.each(function(value, index) {
 results.push(iterator(value, index));
 });
 return results;
 },
 detect: function (iterator) {
 var result;
 this.each(function(value, index) {
 if (iterator(value, index)) {
 result = value;
 throw $break;
 }
 });
 return result;
 },
 findAll: function(iterator) {
 var results = [];
 this.each(function(value, index) {
 if (iterator(value, index))
 results.push(value);
 });
 return results;
 },
 grep: function(pattern, iterator) {
 var results = [];
 this.each(function(value, index) {
 var stringValue = value.toString();
 if (stringValue.match(pattern))
 results.push((iterator || Prototype.K)(value, index));
 })
 return results;
 },
 include: function(object) {
 var found = false;
 this.each(function(value) {
 if (value == object) {
 found = true;
 throw $break;
 }
 });
 return found;
 },
 inject: function(memo, iterator) {
 this.each(function(value, index) {
 memo = iterator(memo, value, index);
 });
 return memo;
 },
 invoke: function(method) {
 var args = $A(arguments).slice(1);
 return this.collect(function(value) {
 return value[method].apply(value, args);
 });
 },
 max: function(iterator) {
 var result;
 this.each(function(value, index) {
 value = (iterator || Prototype.K)(value, index);
 if (value >= (result || value))
 result = value;
 });
 return result;
 },
 min: function(iterator) {
 var result;
 this.each(function(value, index) {
 value = (iterator || Prototype.K)(value, index);
 if (value <= (result || value))
 result = value;
 });
 return result;
 },
 partition: function(iterator) {
 var trues = [], falses = [];
 this.each(function(value, index) {
 ((iterator || Prototype.K)(value, index) ?
 trues : falses).push(value);
 });
 return [trues, falses];
 },
 pluck: function(property) {
 var results = [];
 this.each(function(value, index) {
 results.push(value[property]);
 });
 return results;
 },
 reject: function(iterator) {
 var results = [];
 this.each(function(value, index) {
 if (!iterator(value, index))
 results.push(value);
 });
 return results;
 },
 sortBy: function(iterator) {
 return this.collect(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.collect(Prototype.K);
 },
 zip: function() {
 var iterator = Prototype.K, args = $A(arguments);
 if (typeof args.last() == 'function')
 iterator = args.pop();
 var collections = [this].concat(args).map($A);
 return this.map(function(value, index) {
 iterator(value = collections.pluck(index));
 return value;
 });
 },
 inspect: function() {
 return '#<Enumerable:' + this.toArray().inspect() + '>';
 }
}
Object.extend(Enumerable, {
 map: Enumerable.collect,
 find: Enumerable.detect,
 select: Enumerable.findAll,
 member: Enumerable.include,
 entries: Enumerable.toArray
});
var $A = Array.from = function(iterable) {
 if (!iterable) return [];
 if (iterable.toArray) {
 return iterable.toArray();
 } else {
 var results = [];
 for (var i = 0; i < iterable.length; i++)
 results.push(iterable[i]);
 return results;
 }
}
Object.extend(Array.prototype, Enumerable);
Array.prototype._reverse = Array.prototype.reverse;
Object.extend(Array.prototype, {
 _each: function(iterator) {
 for (var i = 0; i < this.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 != undefined || value != null;
 });
 },
 flatten: function() {
 return this.inject([], function(array, value) {
 return array.concat(value.constructor == Array ?
 value.flatten() : [value]);
 });
 },
 without: function() {
 var values = $A(arguments);
 return this.select(function(value) {
 return !values.include(value);
 });
 },
 indexOf: function(object) {
 for (var i = 0; i < this.length; i++)
 if (this[i] == object) return i;
 return -1;
 },
 reverse: function(inline) {
 return (inline !== false ? this : this.toArray())._reverse();
 },
 shift: function() {
 var result = this[0];
 for (var i = 0; i < this.length - 1; i++)
 this[i] = this[i + 1];
 this.length--;
 return result;
 },
 inspect: function() {
 return '[' + this.map(Object.inspect).join(', ') + ']';
 }
});
var Hash = {
 _each: function(iterator) {
 for (key in this) {
 var value = this[key];
 if (typeof value == 'function') continue;
 var pair = [key, value];
 pair.key = key;
 pair.value = value;
 iterator(pair);
 }
 },
 keys: function() {
 return this.pluck('key');
 },
 values: function() {
 return this.pluck('value');
 },
 merge: function(hash) {
 return $H(hash).inject($H(this), function(mergedHash, pair) {
 mergedHash[pair.key] = pair.value;
 return mergedHash;
 });
 },
 toQueryString: function() {
 return this.map(function(pair) {
 return pair.map(encodeURIComponent).join('=');
 }).join('&');
 },
 inspect: function() {
 return '#<Hash:{' + this.map(function(pair) {
 return pair.map(Object.inspect).join(': ');
 }).join(', ') + '}>';
 }
}
function $H(object) {
 var hash = Object.extend({}, object || {});
 Object.extend(hash, Enumerable);
 Object.extend(hash, Hash);
 return hash;
}
ObjectRange = Class.create();
Object.extend(ObjectRange.prototype, Enumerable);
Object.extend(ObjectRange.prototype, {
 initialize: function(start, end, exclusive) {
 this.start = start;
 this.end = end;
 this.exclusive = exclusive;
 },
 _each: function(iterator) {
 var value = this.start;
 do {
 iterator(value);
 value = value.succ();
 } while (this.include(value));
 },
 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 ActiveXObject('Msxml2.XMLHTTP')},
 function() {return new ActiveXObject('Microsoft.XMLHTTP')},
 function() {return new XMLHttpRequest()}
 ) || false;
 },
 activeRequestCount: 0
}
Ajax.Responders = {
 responders: [],
 _each: function(iterator) {
 this.responders._each(iterator);
 },
 register: function(responderToAdd) {
 if (!this.include(responderToAdd))
 this.responders.push(responderToAdd);
 },
 unregister: function(responderToRemove) {
 this.responders = this.responders.without(responderToRemove);
 },
 dispatch: function(callback, request, transport, json) {
 this.each(function(responder) {
 if (responder[callback] && typeof responder[callback] == 'function') {
 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 = function() {};
Ajax.Base.prototype = {
 setOptions: function(options) {
 this.options = {
 method: 'post',
 asynchronous: true,
 parameters: ''
 }
 Object.extend(this.options, options || {});
 },
 responseIsSuccess: function() {
 return this.transport.status == undefined
 || this.transport.status == 0
 || (this.transport.status >= 200 && this.transport.status < 300);
 },
 responseIsFailure: function() {
 return !this.responseIsSuccess();
 }
}
Ajax.Request = Class.create();
Ajax.Request.Events =
 ['Uninitialized', 'Loading', 'Loaded', 'Interactive', 'Complete'];
Ajax.Request.prototype = Object.extend(new Ajax.Base(), {
 initialize: function(url, options) {
 this.transport = Ajax.getTransport();
 this.setOptions(options);
 this.request(url);
 },
 request: function(url) {
 var parameters = this.options.parameters || '';
 if (parameters.length > 0) parameters += '&_=';
 try {
 this.url = url;
 if (this.options.method == 'get' && parameters.length > 0)
 this.url += (this.url.match(/\?/) ? '&' : '?') + parameters;
 Ajax.Responders.dispatch('onCreate', this, this.transport);
 this.transport.open(this.options.method, this.url,
 this.options.asynchronous);
 if (this.options.asynchronous) {
 this.transport.onreadystatechange = this.onStateChange.bind(this);
 setTimeout((function() {this.respondToReadyState(1)}).bind(this), 10);
 }
 this.setRequestHeaders();
 var body = this.options.postBody ? this.options.postBody : parameters;
 this.transport.send(this.options.method == 'post' ? body : null);
 } catch (e) {
 this.dispatchException(e);
 }
 },
 setRequestHeaders: function() {
 var requestHeaders =
 ['X-Requested-With', 'XMLHttpRequest',
 'X-Prototype-Version', Prototype.Version];
 if (this.options.method == 'post') {
 requestHeaders.push('Content-type',
 'application/x-www-form-urlencoded');
 if (this.transport.overrideMimeType)
 requestHeaders.push('Connection', 'close');
 }
 if (this.options.requestHeaders)
 requestHeaders.push.apply(requestHeaders, this.options.requestHeaders);
 for (var i = 0; i < requestHeaders.length; i += 2)
 this.transport.setRequestHeader(requestHeaders[i], requestHeaders[i+1]);
 },
 onStateChange: function() {
 var readyState = this.transport.readyState;
 if (readyState != 1)
 this.respondToReadyState(this.transport.readyState);
 },
 header: function(name) {
 try {
 return this.transport.getResponseHeader(name);
 } catch (e) {}
 },
 evalJSON: function() {
 try {
 return eval(this.header('X-JSON'));
 } catch (e) {}
 },
 evalResponse: function() {
 try {
 return eval(this.transport.responseText);
 } catch (e) {
 this.dispatchException(e);
 }
 },
 respondToReadyState: function(readyState) {
 var event = Ajax.Request.Events[readyState];
 var transport = this.transport, json = this.evalJSON();
 if (event == 'Complete') {
 try {
 (this.options['on' + this.transport.status]
 || this.options['on' + (this.responseIsSuccess() ? 'Success' : 'Failure')]
 || Prototype.emptyFunction)(transport, json);
 } catch (e) {
 this.dispatchException(e);
 }
 if ((this.header('Content-type') || '').match(/^text\/javascript/i))
 this.evalResponse();
 }
 try {
 (this.options['on' + event] || Prototype.emptyFunction)(transport, json);
 Ajax.Responders.dispatch('on' + event, this, transport, json);
 } catch (e) {
 this.dispatchException(e);
 }
 /* Avoid memory leak in MSIE: clean up the oncomplete event handler */
 if (event == 'Complete')
 this.transport.onreadystatechange = Prototype.emptyFunction;
 },
 dispatchException: function(exception) {
 (this.options.onException || Prototype.emptyFunction)(this, exception);
 Ajax.Responders.dispatch('onException', this, exception);
 }
});
Ajax.Updater = Class.create();
Object.extend(Object.extend(Ajax.Updater.prototype, Ajax.Request.prototype), {
 initialize: function(container, url, options) {
 this.containers = {
 success: container.success ? $(container.success) : $(container),
 failure: container.failure ? $(container.failure) :
 (container.success ? null : $(container))
 }
 this.transport = Ajax.getTransport();
 this.setOptions(options);
 var onComplete = this.options.onComplete || Prototype.emptyFunction;
 this.options.onComplete = (function(transport, object) {
 this.updateContent();
 onComplete(transport, object);
 }).bind(this);
 this.request(url);
 },
 updateContent: function() {
 var receiver = this.responseIsSuccess() ?
 this.containers.success : this.containers.failure;
 var response = this.transport.responseText;
 if (!this.options.evalScripts)
 response = response.stripScripts();
 if (receiver) {
 if (this.options.insertion) {
 new this.options.insertion(receiver, response);
 } else {
 Element.update(receiver, response);
 }
 }
 if (this.responseIsSuccess()) {
 if (this.onComplete)
 setTimeout(this.onComplete.bind(this), 10);
 }
 }
});
Ajax.PeriodicalUpdater = Class.create();
Ajax.PeriodicalUpdater.prototype = Object.extend(new Ajax.Base(), {
 initialize: function(container, url, options) {
 this.setOptions(options);
 this.onComplete = this.options.onComplete;
 this.frequency = (this.options.frequency || 2);
 this.decay = (this.options.decay || 1);
 this.updater = {};
 this.container = container;
 this.url = url;
 this.start();
 },
 start: function() {
 this.options.onComplete = this.updateComplete.bind(this);
 this.onTimerEvent();
 },
 stop: function() {
 this.updater.onComplete = undefined;
 clearTimeout(this.timer);
 (this.onComplete || Prototype.emptyFunction).apply(this, arguments);
 },
 updateComplete: function(request) {
 if (this.options.decay) {
 this.decay = (request.responseText == this.lastText ?
 this.decay * this.options.decay : 1);
 this.lastText = request.responseText;
 }
 this.timer = setTimeout(this.onTimerEvent.bind(this),
 this.decay * this.frequency * 1000);
 },
 onTimerEvent: function() {
 this.updater = new Ajax.Updater(this.container, this.url, this.options);
 }
});
document.getElementsByClassName = function(className, parentElement) {
 var children = ($(parentElement) || document.body).getElementsByTagName('*');
 return $A(children).inject([], function(elements, child) {
 if (child.className.match(new RegExp("(^|\\s)" + className + "(\\s|$)")))
 elements.push(child);
 return elements;
 });
}
if (!window.Element) {
 var Element = new Object();
}
Object.extend(Element, {
 visible: function(element) {
 return $(element).style.display != 'none';
 },
 toggle: function() {
 for (var i = 0; i < arguments.length; i++) {
 var element = $(arguments[i]);
 Element[Element.visible(element) ? 'hide' : 'show'](element);
 }
 },
 hide: function() {
 for (var i = 0; i < arguments.length; i++) {
 var element = $(arguments[i]);
 element.style.display = 'none';
 }
 },
 show: function() {
 for (var i = 0; i < arguments.length; i++) {
 var element = $(arguments[i]);
 element.style.display = '';
 }
 },
 remove: function(element) {
 element = $(element);
 element.parentNode.removeChild(element);
 },
 update: function(element, html) {
 $(element).innerHTML = html.stripScripts();
 setTimeout(function() {html.evalScripts()}, 10);
 },
 getHeight: function(element) {
 element = $(element);
 return element.offsetHeight;
 },
 classNames: function(element) {
 return new Element.ClassNames(element);
 },
 hasClassName: function(element, className) {
 if (!(element = $(element))) return;
 return Element.classNames(element).include(className);
 },
 addClassName: function(element, className) {
 if (!(element = $(element))) return;
 return Element.classNames(element).add(className);
 },
 removeClassName: function(element, className) {
 if (!(element = $(element))) return;
 return Element.classNames(element).remove(className);
 },
 // removes whitespace-only text node children
 cleanWhitespace: function(element) {
 element = $(element);
 for (var i = 0; i < element.childNodes.length; i++) {
 var node = element.childNodes[i];
 if (node.nodeType == 3 && !/\S/.test(node.nodeValue))
 Element.remove(node);
 }
 },
 empty: function(element) {
 return $(element).innerHTML.match(/^\s*$/);
 },
 scrollTo: function(element) {
 element = $(element);
 var x = element.x ? element.x : element.offsetLeft,
 y = element.y ? element.y : element.offsetTop;
 window.scrollTo(x, y);
 },
 getStyle: function(element, style) {
 element = $(element);
 var value = element.style[style.camelize()];
 if (!value) {
 if (document.defaultView && document.defaultView.getComputedStyle) {
 var css = document.defaultView.getComputedStyle(element, null);
 value = css ? css.getPropertyValue(style) : null;
 } else if (element.currentStyle) {
 value = element.currentStyle[style.camelize()];
 }
 }
 if (window.opera && ['left', 'top', 'right', 'bottom'].include(style))
 if (Element.getStyle(element, 'position') == 'static') value = 'auto';
 return value == 'auto' ? null : value;
 },
 setStyle: function(element, style) {
 element = $(element);
 for (name in style)
 element.style[name.camelize()] = style[name];
 },
 getDimensions: function(element) {
 element = $(element);
 if (Element.getStyle(element, 'display') != 'none')
 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;
 els.visibility = 'hidden';
 els.position = 'absolute';
 els.display = '';
 var originalWidth = element.clientWidth;
 var originalHeight = element.clientHeight;
 els.display = 'none';
 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;
 }
 }
 },
 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 = '';
 }
 },
 makeClipping: function(element) {
 element = $(element);
 if (element._overflow) return;
 element._overflow = element.style.overflow;
 if ((Element.getStyle(element, 'overflow') || 'visible') != 'hidden')
 element.style.overflow = 'hidden';
 },
 undoClipping: function(element) {
 element = $(element);
 if (element._overflow) return;
 element.style.overflow = element._overflow;
 element._overflow = undefined;
 }
});
var Toggle = new Object();
Toggle.display = Element.toggle;
Abstract.Insertion = function(adjacency) {
 this.adjacency = adjacency;
}
Abstract.Insertion.prototype = {
 initialize: function(element, content) {
 this.element = $(element);
 this.content = content.stripScripts();
 if (this.adjacency && this.element.insertAdjacentHTML) {
 try {
 this.element.insertAdjacentHTML(this.adjacency, this.content);
 } catch (e) {
 if (this.element.tagName.toLowerCase() == 'tbody') {
 this.insertContent(this.contentFromAnonymousTable());
 } else {
 throw e;
 }
 }
 } else {
 this.range = this.element.ownerDocument.createRange();
 if (this.initializeRange) this.initializeRange();
 this.insertContent([this.range.createContextualFragment(this.content)]);
 }
 setTimeout(function() {content.evalScripts()}, 10);
 },
 contentFromAnonymousTable: function() {
 var div = document.createElement('div');
 div.innerHTML = '<table><tbody>' + this.content + '</tbody></table>';
 return $A(div.childNodes[0].childNodes[0].childNodes);
 }
}
var Insertion = new Object();
Insertion.Before = Class.create();
Insertion.Before.prototype = Object.extend(new Abstract.Insertion('beforeBegin'), {
 initializeRange: function() {
 this.range.setStartBefore(this.element);
 },
 insertContent: function(fragments) {
 fragments.each((function(fragment) {
 this.element.parentNode.insertBefore(fragment, this.element);
 }).bind(this));
 }
});
Insertion.Top = Class.create();
Insertion.Top.prototype = Object.extend(new Abstract.Insertion('afterBegin'), {
 initializeRange: function() {
 this.range.selectNodeContents(this.element);
 this.range.collapse(true);
 },
 insertContent: function(fragments) {
 fragments.reverse(false).each((function(fragment) {
 this.element.insertBefore(fragment, this.element.firstChild);
 }).bind(this));
 }
});
Insertion.Bottom = Class.create();
Insertion.Bottom.prototype = Object.extend(new Abstract.Insertion('beforeEnd'), {
 initializeRange: function() {
 this.range.selectNodeContents(this.element);
 this.range.collapse(this.element);
 },
 insertContent: function(fragments) {
 fragments.each((function(fragment) {
 this.element.appendChild(fragment);
 }).bind(this));
 }
});
Insertion.After = Class.create();
Insertion.After.prototype = Object.extend(new Abstract.Insertion('afterEnd'), {
 initializeRange: function() {
 this.range.setStartAfter(this.element);
 },
 insertContent: function(fragments) {
 fragments.each((function(fragment) {
 this.element.parentNode.insertBefore(fragment,
 this.element.nextSibling);
 }).bind(this));
 }
});
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(this.toArray().concat(classNameToAdd).join(' '));
 },
 remove: function(classNameToRemove) {
 if (!this.include(classNameToRemove)) return;
 this.set(this.select(function(className) {
 return className != classNameToRemove;
 }).join(' '));
 },
 toString: function() {
 return this.toArray().join(' ');
 }
}
Object.extend(Element.ClassNames.prototype, Enumerable);
var Field = {
 clear: function() {
 for (var i = 0; i < arguments.length; i++)
 $(arguments[i]).value = '';
 },
 focus: function(element) {
 $(element).focus();
 },
 present: function() {
 for (var i = 0; i < arguments.length; i++)
 if ($(arguments[i]).value == '') return false;
 return true;
 },
 select: function(element) {
 $(element).select();
 },
 activate: function(element) {
 element = $(element);
 element.focus();
 if (element.select)
 element.select();
 }
}
var Form = {
 serialize: function(form) {
 var elements = Form.getElements($(form));
 var queryComponents = new Array();
 for (var i = 0; i < elements.length; i++) {
 var queryComponent = Form.Element.serialize(elements[i]);
 if (queryComponent)
 queryComponents.push(queryComponent);
 }
 return queryComponents.join('&');
 },
 getElements: function(form) {
 form = $(form);
 var elements = new Array();
 for (tagName in Form.Element.Serializers) {
 var tagElements = form.getElementsByTagName(tagName);
 for (var j = 0; j < tagElements.length; j++)
 elements.push(tagElements[j]);
 }
 return elements;
 },
 getInputs: function(form, typeName, name) {
 form = $(form);
 var inputs = form.getElementsByTagName('input');
 if (!typeName && !name)
 return inputs;
 var matchingInputs = new Array();
 for (var i = 0; i < inputs.length; i++) {
 var input = inputs[i];
 if ((typeName && input.type != typeName) ||
 (name && input.name != name))
 continue;
 matchingInputs.push(input);
 }
 return matchingInputs;
 },
 disable: function(form) {
 var elements = Form.getElements(form);
 for (var i = 0; i < elements.length; i++) {
 var element = elements[i];
 element.blur();
 element.disabled = 'true';
 }
 },
 enable: function(form) {
 var elements = Form.getElements(form);
 for (var i = 0; i < elements.length; i++) {
 var element = elements[i];
 element.disabled = '';
 }
 },
 findFirstElement: function(form) {
 return Form.getElements(form).find(function(element) {
 return element.type != 'hidden' && !element.disabled &&
 ['input', 'select', 'textarea'].include(element.tagName.toLowerCase());
 });
 },
 focusFirstElement: function(form) {
 Field.activate(Form.findFirstElement(form));
 },
 reset: function(form) {
 $(form).reset();
 }
}
Form.Element = {
 serialize: function(element) {
 element = $(element);
 var method = element.tagName.toLowerCase();
 var parameter = Form.Element.Serializers[method](element);
 if (parameter) {
 var key = encodeURIComponent(parameter[0]);
 if (key.length == 0) return;
 if (parameter[1].constructor != Array)
 parameter[1] = [parameter[1]];
 return parameter[1].map(function(value) {
 return key + '=' + encodeURIComponent(value);
 }).join('&');
 }
 },
 getValue: function(element) {
 element = $(element);
 var method = element.tagName.toLowerCase();
 var parameter = Form.Element.Serializers[method](element);
 if (parameter)
 return parameter[1];
 }
}
Form.Element.Serializers = {
 input: function(element) {
 switch (element.type.toLowerCase()) {
 case 'submit':
 case 'hidden':
 case 'password':
 case 'text':
 return Form.Element.Serializers.textarea(element);
 case 'checkbox':
 case 'radio':
 return Form.Element.Serializers.inputSelector(element);
 }
 return false;
 },
 inputSelector: function(element) {
 if (element.checked)
 return [element.name, element.value];
 },
 textarea: function(element) {
 return [element.name, element.value];
 },
 select: function(element) {
 return Form.Element.Serializers[element.type == 'select-one' ?
 'selectOne' : 'selectMany'](element);
 },
 selectOne: function(element) {
 var value = '', opt, index = element.selectedIndex;
 if (index >= 0) {
 opt = element.options[index];
 value = opt.value;
 if (!value && !('value' in opt))
 value = opt.text;
 }
 return [element.name, value];
 },
 selectMany: function(element) {
 var value = new Array();
 for (var i = 0; i < element.length; i++) {
 var opt = element.options[i];
 if (opt.selected) {
 var optValue = opt.value;
 if (!optValue && !('value' in opt))
 optValue = opt.text;
 value.push(optValue);
 }
 }
 return [element.name, value];
 }
}
var $F = Form.Element.getValue;
Abstract.TimedObserver = function() {}
Abstract.TimedObserver.prototype = {
 initialize: function(element, frequency, callback) {
 this.frequency = frequency;
 this.element = $(element);
 this.callback = callback;
 this.lastValue = this.getValue();
 this.registerCallback();
 },
 registerCallback: function() {
 setInterval(this.onTimerEvent.bind(this), this.frequency * 1000);
 },
 onTimerEvent: function() {
 var value = this.getValue();
 if (this.lastValue != value) {
 this.callback(this.element, value);
 this.lastValue = value;
 }
 }
}
Form.Element.Observer = Class.create();
Form.Element.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
 getValue: function() {
 return Form.Element.getValue(this.element);
 }
});
Form.Observer = Class.create();
Form.Observer.prototype = Object.extend(new Abstract.TimedObserver(), {
 getValue: function() {
 return Form.serialize(this.element);
 }
});
Abstract.EventObserver = function() {}
Abstract.EventObserver.prototype = {
 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() {
 var elements = Form.getElements(this.element);
 for (var i = 0; i < elements.length; i++)
 this.registerCallback(elements[i]);
 },
 registerCallback: function(element) {
 if (element.type) {
 switch (element.type.toLowerCase()) {
 case 'checkbox':
 case 'radio':
 Event.observe(element, 'click', this.onElementEvent.bind(this));
 break;
 case 'password':
 case 'text':
 case 'textarea':
 case 'select-one':
 case 'select-multiple':
 Event.observe(element, 'change', this.onElementEvent.bind(this));
 break;
 }
 }
 }
}
Form.Element.EventObserver = Class.create();
Form.Element.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
 getValue: function() {
 return Form.Element.getValue(this.element);
 }
});
Form.EventObserver = Class.create();
Form.EventObserver.prototype = Object.extend(new Abstract.EventObserver(), {
 getValue: function() {
 return Form.serialize(this.element);
 }
});
if (!window.Event) {
 var Event = new Object();
}
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,
 element: function(event) {
 return event.target || event.srcElement;
 },
 isLeftClick: function(event) {
 return (((event.which) && (event.which == 1)) ||
 ((event.button) && (event.button == 1)));
 },
 pointerX: function(event) {
 return event.pageX || (event.clientX +
 (document.documentElement.scrollLeft || document.body.scrollLeft));
 },
 pointerY: function(event) {
 return event.pageY || (event.clientY +
 (document.documentElement.scrollTop || document.body.scrollTop));
 },
 stop: function(event) {
 if (event.preventDefault) {
 event.preventDefault();
 event.stopPropagation();
 } else {
 event.returnValue = false;
 event.cancelBubble = true;
 }
 },
 // find the first node with the given tagName, starting from the
 // node the event was triggered on; traverses the DOM upwards
 findElement: function(event, tagName) {
 var element = Event.element(event);
 while (element.parentNode && (!element.tagName ||
 (element.tagName.toUpperCase() != tagName.toUpperCase())))
 element = element.parentNode;
 return element;
 },
 observers: false,
 _observeAndCache: function(element, name, observer, useCapture) {
 if (!this.observers) this.observers = [];
 if (element.addEventListener) {
 this.observers.push([element, name, observer, useCapture]);
 element.addEventListener(name, observer, useCapture);
 } else if (element.attachEvent) {
 this.observers.push([element, name, observer, useCapture]);
 element.attachEvent('on' + name, observer);
 }
 },
 unloadCache: function() {
 if (!Event.observers) return;
 for (var i = 0; i < Event.observers.length; i++) {
 Event.stopObserving.apply(this, Event.observers[i]);
 Event.observers[i][0] = null;
 }
 Event.observers = false;
 },
 observe: function(element, name, observer, useCapture) {
 var element = $(element);
 useCapture = useCapture || false;
 if (name == 'keypress' &&
 (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
 || element.attachEvent))
 name = 'keydown';
 this._observeAndCache(element, name, observer, useCapture);
 },
 stopObserving: function(element, name, observer, useCapture) {
 var element = $(element);
 useCapture = useCapture || false;
 if (name == 'keypress' &&
 (navigator.appVersion.match(/Konqueror|Safari|KHTML/)
 || element.detachEvent))
 name = 'keydown';
 if (element.removeEventListener) {
 element.removeEventListener(name, observer, useCapture);
 } else if (element.detachEvent) {
 element.detachEvent('on' + name, observer);
 }
 }
});
/* prevent memory leaks in IE */
Event.observe(window, 'unload', Event.unloadCache, false);
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;
 },
 realOffset: function(element) {
 var valueT = 0, valueL = 0;
 do {
 valueT += element.scrollTop || 0;
 valueL += element.scrollLeft || 0;
 element = element.parentNode;
 } while (element);
 return [valueL, valueT];
 },
 cumulativeOffset: function(element) {
 var valueT = 0, valueL = 0;
 do {
 valueT += element.offsetTop || 0;
 valueL += element.offsetLeft || 0;
 element = element.offsetParent;
 } while (element);
 return [valueL, valueT];
 },
 positionedOffset: function(element) {
 var valueT = 0, valueL = 0;
 do {
 valueT += element.offsetTop || 0;
 valueL += element.offsetLeft || 0;
 element = element.offsetParent;
 if (element) {
 p = Element.getStyle(element, 'position');
 if (p == 'relative' || p == 'absolute') break;
 }
 } while (element);
 return [valueL, valueT];
 },
 offsetParent: 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;
 },
 // 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 = this.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 = this.realOffset(element);
 this.xcomp = x + offsetcache[0] - this.deltaX;
 this.ycomp = y + offsetcache[1] - this.deltaY;
 this.offset = this.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;
 },
 clone: function(source, target) {
 source = $(source);
 target = $(target);
 target.style.position = 'absolute';
 var offsets = this.cumulativeOffset(source);
 target.style.top = offsets[1] + 'px';
 target.style.left = offsets[0] + 'px';
 target.style.width = source.offsetWidth + 'px';
 target.style.height = source.offsetHeight + 'px';
 },
 page: 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)
 if (Element.getStyle(element,'position')=='absolute') break;
 } while (element = element.offsetParent);
 element = forElement;
 do {
 valueT -= element.scrollTop || 0;
 valueL -= element.scrollLeft || 0;
 } while (element = element.parentNode);
 return [valueL, valueT];
 },
 clone: function(source, target) {
 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 = Position.page(source);
 // find coordinate system to use
 target = $(target);
 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(target,'position') == 'absolute') {
 parent = Position.offsetParent(target);
 delta = Position.page(parent);
 }
 // 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) target.style.left = (p[0] - delta[0] + options.offsetLeft) + 'px';
 if(options.setTop) target.style.top = (p[1] - delta[1] + options.offsetTop) + 'px';
 if(options.setWidth) target.style.width = source.offsetWidth + 'px';
 if(options.setHeight) target.style.height = source.offsetHeight + 'px';
 },
 absolutize: function(element) {
 element = $(element);
 if (element.style.position == 'absolute') return;
 Position.prepare();
 var offsets = Position.positionedOffset(element);
 var top = offsets[1];
 var left = offsets[0];
 var width = element.clientWidth;
 var height = element.clientHeight;
 element._originalLeft = left - parseFloat(element.style.left || 0);
 element._originalTop = top - parseFloat(element.style.top || 0);
 element._originalWidth = element.style.width;
 element._originalHeight = element.style.height;
 element.style.position = 'absolute';
 element.style.top = top + 'px';;
 element.style.left = left + 'px';;
 element.style.width = width + 'px';;
 element.style.height = height + 'px';;
 },
 relativize: function(element) {
 element = $(element);
 if (element.style.position == 'relative') return;
 Position.prepare();
 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;
 }
}
if (/Konqueror|Safari|KHTML/.test(navigator.userAgent)) {
 Position.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 [valueL, valueT];
 }
}