sfHover = function() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
			if (Browser.Engine.name == 'trident' && Browser.Engine.version == 4){
				// IE6
				$$('select').setStyle('visibility', 'hidden');
			}
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
			if (Browser.Engine.name == 'trident' && Browser.Engine.version == 4){
				// IE6
				$$('select').setStyle('visibility', 'visible');
			}
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);