function find_div_class() {
	var divCollection = document.getElementsByTagName("div");
	var collection = new Array();
	for (var i=0; i<divCollection.length; i++) {
		collection.push(divCollection[i].getAttribute("id"));
	}
	return collection;
}

function reportSize() {
	myWidth = 0, myHeight = 0;
	if( typeof( window.innerWidth ) == 'number' ) {
		//Non-IE
		myWidth = window.innerWidth;
		myHeight = window.innerHeight;
	} else {
		if( document.documentElement &&
			( document.documentElement.clientWidth || document.documentElement.clientHeight ) ) {
			//IE 6+ in 'standards compliant mode'
			myWidth = document.documentElement.clientWidth;
			myHeight = document.documentElement.clientHeight;
		} else {
			if( document.body && ( document.body.clientWidth || document.body.clientHeight ) ) {
				//IE 4 compatible
				myWidth = document.body.clientWidth;
				myHeight = document.body.clientHeight;
			}
		}
	}
	return myWidth;
}

function layoutResize() {
	myWidth = reportSize();
	offsetFullWidth = myWidth/2;
	
	a= document.getElementById("wrapper").offsetWidth/2;
	b = offsetFullWidth - a;
	document.getElementById("wrapper").style.left = b+"px";
}