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 contentHeight;
		if (document.getElementById('c2').offsetHeight>document.getElementById('c1').offsetHeight) {
			contentHeight=document.getElementById('c2').offsetHeight;
		} else {
			contentHeight=document.getElementById('c1').offsetHeight;
		}
		var top=114+document.getElementById('t2').offsetHeight+contentHeight;
		var windowHeight = getWindowHeight();
		if (windowHeight > 0) {
			var contentHeight = top;
			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';
				document.getElementById('grid').display='inline';
			}
		}
	}
	
}