YAHOO.util.Event.onContentReady("testDiv", function () {
  var oMenuBar = new YAHOO.widget.MenuBar("Center_Menu_Container", { 
    autosubmenudisplay: true,
    hidedelay: 1500, 
    lazyload: true, 
    effect: { 
      effect: YAHOO.widget.ContainerEffect.FADE,
      duration: 0.19
    } 
  }
  );
                    

  oMenuBar.subscribe("beforeRender", function () {
    if (this.getRoot() == this) {

    }
  });
  oMenuBar.render();         
});