window.onresize = checkHeight;
function checkHeight(){
	var docHeight = document.getElementById("wrapper").offsetHeight;
	if (navigator.appName.indexOf("Microsoft") > -1){
		var scrHeight = document.body.offsetHeight;
	} else {
		scrHeight = window.innerHeight;
	}
	if (docHeight < scrHeight){
		var space = scrHeight - docHeight;
		space += 113;
		document.getElementById("footer").style.height = space+"px";
	}
}