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 pageWrapper   = document.getElementById('page-wrapper');
			var headerHeight  = document.getElementById('header').offsetHeight;
			var navHeight     = document.getElementById('menuElem').offsetHeight;
			var contentHeight = document.getElementById('content-wrapper').offsetHeight;
			var footerHeight  = document.getElementById('footer').offsetHeight;
			var pageHeight    = contentHeight + headerHeight + navHeight + footerHeight;
			if (windowHeight - pageHeight >= 0) {
				contentHeight += (windowHeight - pageHeight);
				document.getElementById('content-wrapper').style.height = contentHeight + 'px';
			}
		}
	}
}