sfHover = function() {
    if(document.getElementById("menu")) {
        var sfEls = document.getElementById("menu").getElementsByTagName("LI");
        for (var i=0; i<sfEls.length; i++) {
            sfEls[i].onmouseover=function() {
                this.className+=" over";
                if(document.getElementById("menu_iframe")) {
                    var iframe = document.getElementById("menu_iframe");

                    var submenu = this.getElementsByTagName("UL");
                    if(submenu.length) {
                        iframe.style.top = submenu[0].offsetTop + this.offsetTop;
                        iframe.style.left = submenu[0].offsetLeft + this.offsetLeft;
                        iframe.style.width = submenu[0].scrollWidth;
                        iframe.style.height = submenu[0].clientHeight;
                        iframe.style.display = "inline";
                    }
                }
            }
            sfEls[i].onmouseout=function() {
                this.className=this.className.replace(new RegExp(" over\\b"), "");
                if(document.getElementById("menu_iframe")) {
                    var iframe = document.getElementById("menu_iframe");
                    iframe.style.display = "none";
                }
            }
        }
    }
}
if (window.attachEvent) window.attachEvent("onload", sfHover);