var windowHeightPrev = getWindowHeight();

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 containerElement = document.getElementById('container');
			var contentHeight = document.getElementById('content').offsetHeight;
			var footerElement = document.getElementById('footer');
			var footerHeight  = footerElement.offsetHeight;
			if (windowHeight - (290 + contentHeight + footerHeight) >= 0) {
				footerElement.style.position = 'relative';
				footerElement.style.top = (windowHeight - (290 + contentHeight + footerHeight)) + 'px';
				if (windowHeightPrev != windowHeight) {
					containerElement.style.height = (containerHeight + (windowHeight - (290 + contentHeight + footerHeight))) + 'px';
					windowHeightPrev = windowHeight;
				}
			}
			else {
				footerElement.style.position = 'static';
			}
		}
	}
}

var windowHeightPrev = 0;
var containerHeight = 0;

window.onload = function() {
	containerHeight = document.getElementById('container').offsetHeight;
	setFooter();
}

window.onresize = function() {
	setFooter();
}