sfHover = function() {
	var sfEls = document.getElementById("navigation").getElementsByTagName("li");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover = function() {
			this.className = "hovermenu";
		}
		sfEls[i].onmouseout = function() {
			this.className = "hidemenu";
		}
	}
}