// voor IE
	sfHover = function() {
			var sfEls = document.getElementById("nav").getElementsByTagName("LI");
			for (var i=0; i<sfEls.length; i++) {
			sfEls[i].onmouseover=function() {
			this.className+=" ie_does_hover";
			}
			sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" ie_does_hover\\b"), "");
			}
			}
			}
			if (window.attachEvent) window.attachEvent("onload", sfHover);