startList = function() {
  if (document.all && document.getElementById) {
    navRoot = document.getElementById("menu");
    if (!navRoot) return;
    for (i = 0; i < navRoot.childNodes.length; i++) {
      node = navRoot.childNodes[i];
      if (node.nodeName == "LI") {
        node.onmouseover = function() {
          this.className += " over";
        }
        node.onmouseout = function() {
          this.className = this.className.replace(" over", "");
        }
      }
    }
  }
}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(startList);