function getPageYOffset ()
{	
	if (document.documentElement.scrollTop)
		return document.documentElement.scrollTop;
	else
		return document.body.scrollTop;
}

function getPageXOffset ()
{	
	if (document.documentElement.scrollLeft)
		return document.documentElement.scrollLeft;
	else
		return document.body.scrollLeft;
}

function getInnerHeight ()
{
	if (document.documentElement.clientHeight)
		return document.documentElement.clientHeight;
	else
		return document.body.clientHeight;
}

function getInnerWidth ()
{
	if (document.documentElement.clientWidth)
		return document.documentElement.clientWidth;
	else
		return document.body.clientWidth;
}

function createRadio (radioName)
{
	var radio;

	try {
		radio = document.createElement ('<input type="radio" name="' + radioName + '">');
	}
	catch (e)
	{
		radio = document.createElement ('input');
		radio.type = 'radio';
		radio.name = radioName;
	}
	
	return radio;
}

function setInputTypeNumber (input)
{
	input.type = 'text';
}

if (!Function.bind)
{
	Function.prototype.bind = function ()
	{
		var bindFunc = this;
		var bindThis = arguments[0];
		var bindArgs = arguments;

		var IE_bind = function ()
		{
			var args = new Array ();
	
			for (var i = 1; i < bindArgs.length; i++)
				args.push (bindArgs[i]);
			for (var i = 0; i < arguments.length; i++)
				args.push (arguments[i]);
		
			bindFunc.apply (bindThis, args);
		}

		return IE_bind;
	}
}

//	attachEvent -> addEventListener

if (window.attachEvent && !window.addEventListener)
{
	function IE_addEventListener (signal, func, capture)
	{
		var obj = this;
		
		func.IE_eventHandler = function (event)
		{
			event.target = event.srcElement;
			event.layerY = event.clientY;
			event.layerX = event.clientX;
			event.pageX = event.offsetX;
			event.pageY = event.offsetY;
			event.stopPropagation = function ()
			{
				this.cancelBubble = true;
			}
			
			func.call (obj, event);
		}

		this.attachEvent ('on' + signal, func.IE_eventHandler);
	}
	
	function IE_removeEventListener (signal, func, capture) 
	{
		this.detachEvent ('on' + signal, func.IE_eventHandler);
	}

	window.addEventListener = IE_addEventListener;
	window.removeEventListener = IE_removeEventListener;
	document.addEventListener = IE_addEventListener;
	document.removeEventListener = IE_removeEventListener;

	var IE_createElement = document.createElement;

	document.createElement = function (tagName)
	{
		var node = IE_createElement (tagName);
		node.addEventListener = IE_addEventListener;
		node.removeEventListener = IE_removeEventListener;
		return node;
	}
}

//	ActiveXObject ('Microsoft.XMLHTTP') -> XMLHttpRequest

if (!window.XMLHttpRequest && window.ActiveXObject)
{
	function XMLHttpRequest ()
	{
		return new ActiveXObject ('Microsoft.XMLHTTP');
	}
}