sfHover = function()
{
    var eMenu = document.getElementById("menu");
    if(!eMenu) return;
    
	var sfEls = eMenu.getElementsByTagName("li");
	if(!sfEls) return;
	
	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);