function layoutGuard() {
    var documentheight = document.documentElement.clientHeight;
	var contentheight = document.getElementById('content').offsetHeight;
	contentheight = (contentheight*1+260);
	if (documentheight>contentheight) {
		//alert('footer laag zetten');
		document.getElementById('footer').style.position = 'absolute';
		document.getElementById('footer').style.bottom = '0px';
	} else {
		//alert('footer achter content');
		document.getElementById('footer').style.position = 'relative';
	}
	//alert(contentheight);
	//alert(h);
}