function size()
{
	var bars;
	if (navigator.appName=='Microsoft Internet Explorer'){
		bars = 130;
	}
	else
	{
		bars = 180;
	}
	var header = 75;
	var footer = 55;
	var aHeight = screen.availHeight;
	var container = aHeight-(header+footer+bars);
	var main = container-50;
	var cdiv=document.getElementById("container");
	cdiv.style.height=""+container+"px";
	var mdiv=document.getElementById("main");
	mdiv.style.height=""+main+"px";
}