// Add trim function to String objects.
String.prototype.trim = function() { return this.replace(/^\s+|\s+$/g, ''); }

var getPixels = function(size)
{
	if (size == null || size == undefined)
		return false;
		
	return ((""+size).match(/[0-9]+/g))[0]*1;
}

var getElemPos = function(elem)
{
	var x = y = 0;
	if (elem.offsetParent)
	{
		do {
			x += elem.offsetLeft;
			y += elem.offsetTop;
		} while (elem = elem.offsetParent);
	}
	return {x: x, y: y};
}

function getInnerWindowSize()
{
	var w = 0, h = 0;
	if( typeof( window.innerWidth ) == 'number' ) {
		//Non-IE
		w = window.innerWidth;
		h = window.innerHeight;
	} else if( document.documentElement && ( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
		//IE 6+ in 'standards compliant mode'
		w = document.documentElement.clientWidth;
		h = document.documentElement.clientHeight;
	} else if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
		//IE 4 compatible
		w = document.body.clientWidth;
		h = document.body.clientHeight;
	}
	return {width: w, height: h};
}

function sgn(n)
{
	return (n==0) ? 1 : Math.abs(n) / n;
}

// Browser Window Size and Position
// copyright Stephen Chapman, 3rd Jan 2005, 8th Dec 2005
// you may copy these functions but please keep the copyright notice as well
function pageWidth() {return window.innerWidth != null? window.innerWidth : document.documentElement && document.documentElement.clientWidth ?       document.documentElement.clientWidth : document.body != null ? document.body.clientWidth : null;} function pageHeight() {return  window.innerHeight != null? window.innerHeight : document.documentElement && document.documentElement.clientHeight ?  document.documentElement.clientHeight : document.body != null? document.body.clientHeight : null;} function posLeft() {return typeof window.pageXOffset != 'undefined' ? window.pageXOffset :document.documentElement && document.documentElement.scrollLeft ? document.documentElement.scrollLeft : document.body.scrollLeft ? document.body.scrollLeft : 0;} function posTop() {return typeof window.pageYOffset != 'undefined' ?  window.pageYOffset : document.documentElement && document.documentElement.scrollTop ? document.documentElement.scrollTop : document.body.scrollTop ? document.body.scrollTop : 0;} function posRight() {return posLeft()+pageWidth();} function posBottom() {return posTop()+pageHeight();}