function toggleSelectList(showSelects) {
    var selectList = document.getElementsByTagName("select");
    for(var i=0; i<selectList.length; i++){
        if(showSelects == true) {
            selectList[i].style.visibility = "visible";
        } else {
            selectList[i].style.visibility = "hidden";
        }
    }
}

function sfHover() {
    var sfEls = document.getElementById("mainMenu").getElementsByTagName("LI");
    for (var i=0; i<sfEls.length; i++) {
        sfEls[i].onmouseover=function() {
            if ((BrowserDetect.browser == "Explorer") && (BrowserDetect.version < 7)) {
                toggleSelectList(false);
            }
            this.className+=" sfhover";
        }
        sfEls[i].onmouseout=function() {
            if ((BrowserDetect.browser == "Explorer") && (BrowserDetect.version < 7)) {
                toggleSelectList(true);
            }
            this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
        }
    }

}

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