// IE: cloning the pseudo :hover element
function sfHover ()
{

    if (!document.getElementById("nav")) return false;
    var sfEls = document.getElementById("nav").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"), "");
        }
    }

}