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 $() 
{
	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;
}

document.getElementsByClassName = function(className) 
{
	var children = document.getElementsByTagName('*') || document.all;
	var elements = new Array();

	for (var i = 0; i < children.length; i++) 
	{
		var child = children[i];
		var classNames = child.className.split(' ');
		for (var j = 0; j < classNames.length; j++) 
		{
			if (classNames[j] == className) 
			{
				elements.push(child);
				break;
			}
		}	
	}
	return elements;
}

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 a = element.className.split(' ');
			for (var i = 0; i < a.length; i++) 
			{
				if (a[i] == className)
				{
					return true;
				}
			}
			return false;
		},

		addClassName: function(element, className) 
		{
			element = $(element);
			Element.removeClassName(element, className);
			element.className += ' ' + className;
		},
	  
		removeClassName: function(element, className) 
		{
			element = $(element);
			if (!element)
			{
				return;
			}
			var newClassName = '';
			var a = element.className.split(' ');
			for (var i = 0; i < a.length; i++) 
			{
				if (a[i] != className) 
				{
					if (i > 0)
					{
						newClassName += ' ';
						newClassName += a[i];
					}
				}
			}
			element.className = newClassName;
		},
	  
		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);
				}
			}
		}
	}
);