function getWindowHeight() {
	
	var windowHeight = 0;
	if (typeof(window.innerHeight) == 'number') {
		windowHeight = window.innerHeight;
		}
	
	else {
	if (document.documentElement && document.documentElement.clientHeight) {
		windowHeight = document.documentElement.clientHeight;
		}

	else {
		if (document.body && document.body.clientHeight) {
			windowHeight = document.body.clientHeight;
			}
			}
			}

return windowHeight;}
		
	function setFooter() {
	
	if (document.getElementById) {
	var windowHeight = getWindowHeight();
	
	if (windowHeight > 0) {
	var contentHeight = document.getElementById('container').offsetHeight;
	var footerElement = document.getElementById('footer');
	var footerHeight  = footerElement.offsetHeight;
	
	if (windowHeight - (contentHeight + footerHeight) >= 0) {
		footerElement.style.position = 'absolute';
		footerElement.style.top = (windowHeight - footerHeight) + 'px';
		}
	
	else {
		footerElement.style.position = 'static';
		}
		}
		}
		}
		window.onload = function() {
			setFooter();
			}
		window.onresize = function() {
			setFooter();
			}