sfHover = function() {
	var sfEls = document.getElementById("mainMenu").getElementsByTagName("LI");
	for (var i = 0; i < sfEls.length; i++) {
	    sfEls[i].onmouseover = function() {
		    this.className = "sfhover";
	    }
	    sfEls[i].onmouseout = function() {
		    this.className = "sfout";
        }
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);