function cssJsMenu(elemId) {
    if (document.getElementById(elemId)) {
        var navroot = document.getElementById(elemId);
        var lis = navroot.getElementsByTagName("LI");

        for (i = 0; i < lis.length; i++) {
            for (j = 0; j < lis[i].getElementsByTagName("UL").length; j++) {
                lis[i].onmouseover = function() {
                    this.getElementsByTagName("UL")[j].style.visibility = 'visible';
                }

                lis[i].onmouseout = function() {
                    this.getElementsByTagName("UL")[j].style.visibility = 'hidden';
                }
            }
        }
    }
}