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 mainHeight = document.getElementById('MAINLAYOUT').offsetHeight; 
			var footerElement = document.getElementById('FOOTER'); 
			var footerHeight = footerElement.offsetHeight; 
			if (windowHeight - (mainHeight + footerHeight) >= 0) { 
				footerElement.style.position = 'relative'; 
				footerElement.style.top = (windowHeight - (mainHeight + footerHeight)) + 'px'; 
			} 
			else { 
				footerElement.style.position = 'static'; 
			} 
		} 
	} 
} 
window.onload = function() { 
	setFooter(); 
} 
window.onresize = function() { 
	setFooter(); 
}