function goMenu() {
	var sfEls = document.getElementById("nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
            var current = this.lastChild;
            if (current.tagName != 'UL') {
                current = current.previousSibling;
            }
            if(current != null) {
                current.className += ' sfhover';
            }
		}
		sfEls[i].onmouseout = function() {
            var current = this.lastChild;
            if (current.tagName != 'UL') {
                current = current.previousSibling;
            }
            if(current != null) {
                current.className = current.className.replace(new RegExp('sfhover'), '');
            }
		}
	}
}