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 = 'relative';
		footerElement.style.top = (windowHeight - (contentHeight + footerHeight)) + 'px';
	}
	else {
		footerElement.style.position = 'static';
	}
}
}
}
window.onload = function() {
setFooter();
}
window.onresize = function() {
setFooter();
}