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

if (window.attachEvent)
  window.attachEvent("onload", startList)
else
  window.onload=startList;