sfHover = function() {
    if (document.getElementById("nav1")) {
        var sfEls = document.getElementById("nav1").getElementsByTagName("LI");
        for (var i=0; i<sfEls.length; i++) {
            sfEls[i].onmouseover=function() {
                this.className+=" ie_does_hover";
            }
            sfEls[i].onmouseout=function() {
                this.className=this.className.replace(new RegExp(" ie_does_hover\\b"), "");
            }
        }
    }

    if (document.getElementById("nav2")) {
        var sfEls = document.getElementById("nav2").getElementsByTagName("LI");
        for (var i=0; i<sfEls.length; i++) {
            sfEls[i].onmouseover=function() {
                this.className+=" ie_does_hover";
            }
            sfEls[i].onmouseout=function() {
                this.className=this.className.replace(new RegExp(" ie_does_hover\\b"), "");
            }
        }
    }

    if (document.getElementById("nav3")) {
        var sfEls = document.getElementById("nav3").getElementsByTagName("LI");
        for (var i=0; i<sfEls.length; i++) {
            sfEls[i].onmouseover=function() {
                this.className+=" ie_does_hover";
            }
            sfEls[i].onmouseout=function() {
                this.className=this.className.replace(new RegExp(" ie_does_hover\\b"), "");
            }
        }
    }

}
if (window.attachEvent) window.attachEvent("onload", sfHover);