sfHover = function() {
	var parntUL=null;
	var sfEls = document.getElementById("ddnav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" over";
			this.style.zIndex=100;
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" over\\b"), "");
			this.style.zIndex=10;
		
		}
	}
}