ie6hover = function() {
	var nav_els = document.getElementById("menu").getElementsByTagName("LI");
	for (var i=0; i<nav_els.length; i++) {
		nav_els[i].onmouseover=function() {
			this.className+=" hover";
		}
		nav_els[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp("hover\\b"), "");
		}
	}
}
var agent = navigator.userAgent.toLowerCase();
if (window.attachEvent && (agent.indexOf('msie 6')>-1 || agent.indexOf('msie 5')>-1)) { window.attachEvent("onload", ie6hover); }