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() {
	//alert("test-content " + document.getElementById('content').offsetHeight);
	//alert("test-setfooter " + document.getElementById('maincenter').offsetHeight);
	if (document.getElementById('maincenter').offsetHeight > 1) {
	//alert("test-setfooter-maincenter" + document.getElementById('maincenter').offsetHeight);
		if (document.getElementById) {
			if (document.getElementById('header')) {
				var windowHeight = getWindowHeight();
				if (windowHeight > 0) {
					var initialheight = 0;			
					if (initialheight < 1) {
						initialheight = document.getElementById('content').offsetHeight;
						}
			
					var contentHeight = document.getElementById('content').offsetHeight;
					var HeaderHeight = document.getElementById('header').offsetHeight;
					var MenuHeight = document.getElementById('horizontal_menu').offsetHeight;
					var FooterHeight = document.getElementById('footer').offsetHeight;
					var footerElement = document.getElementById('footer');
					var footerHeight  = footerElement.offsetHeight;

					//alert(window.innerHeight);
					//alert('windows: ' + windowHeight);
					//alert('Header: ' + HeaderHeight);
					//alert('Menu: ' + MenuHeight);
					//alert('Footer: ' + FooterHeight);
					//alert('maincenter: ' + document.getElementById('maincenter').offsetHeight);
					//alert('fond: ' + document.getElementById('fond').offsetHeight);	

					var maincenterHeight  = document.getElementById('maincenter').offsetHeight;
					//alert(maincenterHeight);
					//alert('difference: ' + (windowHeight - (HeaderHeight  + MenuHeight + maincenterHeight + FooterHeight)));
					if (windowHeight - (HeaderHeight  + MenuHeight + maincenterHeight + FooterHeight + 2 ) >= 0) {
						document.getElementById('content').style.height=(windowHeight -  FooterHeight - 2) + 'px';
						//alert('Content' + document.getElementById('content').style.height)	
						}
					else {
						document.getElementById('content').style.height = (HeaderHeight  + MenuHeight + maincenterHeight) + 'px';
						document.getElementById('content').style.height = '';
						}
					}
				}
			}
		}
	}