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

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