function layoutGuard() {
    var documentheight = document.documentElement.clientHeight;
	var contentheight = document.getElementById('inhoud').offsetHeight;
	inhoudheight = documentheight-235;
	//alert(documentheight);
	//alert(contentheight);
	if (documentheight>contentheight) {
		//alert('footer laag zetten');
		document.getElementById('inhoud').style.height = inhoudheight+'px';
	} else {
		//document.getElementById('inhoud').style.height = '600px';
	}

	//alert(h);
}