sfHover = function(elem) {
	var e = document.getElementById(elem);
	if (e) {
		var sfEls = e.getElementsByTagName("LI");
		for (var i = 0; i < sfEls.length; i++) {
			sfEls[i].onmouseover=function() {
				this.className+=" sfhover";
			}
			sfEls[i].onmouseout=function() {
				this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
			}
		}
	}
}

if (window.attachEvent) window.attachEvent("onload", function() {
	sfHover('mainnav_ul');
	sfHover('subnav_ul');
});

// alert('foo');