// JavaScript Document

startList = function() {
	if (document.all&&document.getElementById) {
		navRoot = document.getElementById("main-nav");
		for (i=0; i<navRoot.childNodes.length; i++) {
			node = navRoot.childNodes[i];
			if (node.nodeName=="LI") {
				node.onmouseover=function() {
					this.className+=" hover";
				}
				node.onmouseout=function() {
//					alert(this.childNodes[2].childNodes[0].childNodes[0].getAttribute("color", false));
					this.className=this.className.replace(" hover", "");
				}
				
			}
		}
	}
}
window.onload=startList;

<!-- Quelle: http://www.alistapart.com/articles/dropdowns/ -->