window.onload = Resize;
window.onresize = Resize;

function Resize(){
	var maincontainer = document.getElementById("maincontainer");
	var browser = navigator.appName;
	if (browser == "Microsoft Internet Explorer")
	{
		if (document.body.clientWidth < 866)
		{
			maincontainer.style.width = "779px";
		}
		else
		{
			maincontainer.style.width = "90%";
		}
	}
}