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';
}
}
}
}
}