function isset(j){
	var clean = true;
	try {
		test_var = document.getElementById(sitemenus[j]).getElementsByTagName("LI");
	} catch (e) {
		clean = false;
	}
	return clean;
}

sfHover = function() {
	for (var j=0; j<sitemenus.length; j++) {
		if (isset(j)) {
			var sfEls = document.getElementById(sitemenus[j]).getElementsByTagName("LI");
			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"), "");
				}
			}
		}
	}
}
var sitemenus = new Array('menu', 'submenu');
if (window.attachEvent) window.attachEvent("onload", sfHover);