function startMenu1() {
if (document.getElementById) {
nav = document.getElementById('menu1');
for (i=0; i<nav.childNodes.length; i++) {
node = nav.childNodes[i];
if (node.nodeName == 'LI') {
node.onmouseover = function() {
this.className = 'over';
}
node.onmouseout = function() {
this.className = '';
    }
   }
  }
 }
}