function buildDropDown(menu, element) {
    sfHover = function() {
    	var sfEls = document.getElementById(menu).getElementsByTagName(element);
    	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", sfHover);
}