function menuFix()
{
    var sfEls = document.getElementById("nav").getElementsByTagName("li");
    for (var i=0; i<sfEls.length; i++)
    {
        sfEls[i].onmouseover=function()
        {
            this.className+=(this.className.length>0? " ": "") + "sfhover";
        }
        sfEls[i].onMouseDown=function()
        {
            this.className+=(this.className.length>0? " ": "") + "sfhover";
        }
        sfEls[i].onMouseUp=function()
        {
            this.className+=(this.className.length>0? " ": "") + "sfhover";
        }
        sfEls[i].onmouseout=function()
        {
            this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"), "");
        }
    }
}
menuFix();