function updateDiv() {
			if (navigator.userAgent.indexOf("MSIE") > 0)
			{
			document.getElementById('main').style.height=document.documentElement.clientHeight-170+'px';
			document.getElementById('sidebar').style.height=document.documentElement.clientHeight-170+'px';
			}
			else
			{
			document.getElementById('main').style.height=window.outerHeight-237+'px';
			document.getElementById('sidebar').style.height=window.outerHeight-237+'px';
			}
		}
		window.onload=updateDiv
		window.onresize=updateDiv