function layoutGuard() {
	var boxheight = 520;
	var boxwidth = 850;
    var documentheight = document.documentElement.clientHeight;
    var documentwidth = document.documentElement.clientWidth;
	//var contentheight = document.getElementById('content').offsetHeight;
	//contentheight = (contentheight*1+260);
	//alert(documentheight);
	var topoffset = ((documentheight - boxheight)/2);
	var leftoffset = ((documentwidth - boxwidth)/2);
	
	//document.getElementById('shadow').style.top = (topoffset)+'px';
	//document.getElementById('shadow').style.left = (leftoffset)+'px';
	//document.getElementById('shadow').style.visibility = 'visible';


	//alert(document.getElementById('shadow').style.visibility);
	//alert(h);
}