window.onload = checkAvailableWidth;
window.onresize = checkAvailableWidth;
function checkAvailableWidth(){
	var container = document.getElementById("container");
	container.style.width = (
		(document.documentElement.clientWidth > 950)? "70em" :
		(document.documentElement.clientWidth < 800)? "60em" : 
		"auto");
}