function navHover() {
	var list = document.getElementById("navigation").getElementsByTagName("LI");
	for (var i=0; i<list.length; i++) {
		list[i].onmouseover=function() {
			this.className+=" hover";
		}
		list[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp("hover\\b"), "");
            this.className=this.className.replace(new RegExp(" hover\\b"), "");
		}
	}
}

addLoadEvent(function() {
  navHover();
});