function windowHeightCalculation() {
	var windowHeight = (window.innerHeight) ? /*non IE*/ window.innerHeight : /*IE 6+*/ document.documentElement.clientHeight;
	return windowHeight;
}
function footerPlacement() {
}
window.onload = function() {
	footerPlacement();
}
window.onresize = function() {
	footerPlacement();
}