/*	Prototype JavaScript framework
 *	(c) 2005 Sam Stephenson <sam@conio.net>
 *	Prototype is freely distributable under the terms of an MIT-style license.
 *	For details, see the Prototype web site: http://prototype.conio.net/
/*--------------------------------------------------------------------------*/
//note: modified & stripped down version of prototype, to be used with moo.fx by mad4milk (http://moofx.mad4milk.net).
var Class = {
	create: function() { return function() { this.initialize.apply(this, arguments); } }
}
Object.extend = function(destination, source) {
	for (property in source) destination[property] = source[property];
	return destination;
}
Function.prototype.bind = function(object) {
	var __method = this;
	return function() { return __method.apply(object, arguments); }
}
Function.prototype.bindAsEventListener = function(object) {
var __method = this;
	return function(event) { __method.call(object, event || window.event); }
}
function $() {
	if (arguments.length == 1) return get$(arguments[0]);
	var elements = [];
	$c(arguments).each(function(el){ elements.push(get$(el)); });
	return elements;
	function get$(el){
		if (typeof el == 'string') el = document.getElementById(el);
		return el;
	}
}
if (!window.Element) var Element = new Object();
Object.extend(Element, {
	remove: function(element) { element = $(element); element.parentNode.removeChild(element); },
	hasClassName: function(element, className) {
		element = $(element);
		if (!element) return;
		var hasClass = false;
		$A(element.className.split(' ')).each(function(cn){ if (cn == className) hasClass = true; });
		return hasClass;
	},
	addClassName: function(element, className) {
		element = $(element);
		Element.removeClassName(element, className);
		element.className += ' ' + className;
	},
	removeClassName: function(element, className) {
		element = $(element);
		if (!element) return;
		var newClassName = '';
		$A(element.className.split(' ')).each(function(cn, i){
			if (cn != className){
				if (i > 0) newClassName += ' ';
				newClassName += cn;
			}
		});
		element.className = newClassName;
	},
	cleanWhitespace: function(element) {
		element = $(element);
		$c(element.childNodes).each(function(node){
			if (node.nodeType == 3 && !/\S/.test(node.nodeValue)) Element.remove(node);
		});
	},
	find: function(element, what) {
		element = $(element)[what];
		while (element.nodeType != 1) element = element[what];
		return element;
	}
});
var Position = {
	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];
	}
};
document.getElementsByClassName = function(className) {
	var children = document.getElementsByTagName('*') || document.all;
	var elements = [];
	$c(children).each(function(child){ if (Element.hasClassName(child, className)) elements.push(child); });	
	return elements;
}
function $c(array){
	var nArray = [];
	for (i=0;el=array[i];i++) nArray.push(el);
	return $A(nArray);
}
var $A = Array.from = function(iterable) {
	if (!iterable) return makeArrayEach([]);
	if (iterable.toArray) {
		return makeArrayEach(iterable.toArray());
	} else {
		var results = makeArrayEach([]);
		for (var i = 0; i < iterable.length; i++)
			results.push(iterable[i]);
		return results;
	}
}
function makeArrayEach(array) {
 	array.each = function(func){ for(var i=0;ob=this[i];i++) func(ob, i); }
	return array;
}
var Abstract = new Object();
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; }
	}
}
if (!window.Event) { var Event = new Object(); }
Object.extend(Event, {
	element: function(event) {return event.target || event.srcElement;},
	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); }
	}
});