function loadMenu() {
  var menuRoot = document.getElementById('menu_honeywell');
  var node;
  for (var i=0; i<menuRoot.childNodes.length; i++) {
    node = menuRoot.childNodes[i];
    if (node.className.match(/menu/)) {
      node.onmouseover = function() { this.className += " hover"; };
      node.onmouseout = function() { this.className = this.className.replace(" hover",""); };
    }
  }
}

function addEvent(obj,eventName,funcName) {
  if (typeof obj == "string") obj = document.getElementById(obj);
  if (obj.addEventListener) {
    obj.addEventListener (eventName,funcName,false);
    obj.addEventListener (eventName,funcName,false);
  } else if (obj.attachEvent) {
    obj.attachEvent ('on'+eventName,funcName);
    obj.attachEvent ('on'+eventName,funcName);
  }
}

addEvent(window,'load',loadMenu);