Notification area with Scriptaculous

This time I need a notification area in webapp, the idea is a div that appears and disappears.

In Scriptaculous it's easy extend and combine effects, and the first I do is extend an Effect to do the behavior that I'm looking for.

Effect.Notify = function(element) {
  element = $(element);
    return new Effect.Appear(element, 
      { afterFinishInternal: function(effect) {
          new Effect.Fade(effect.element,{ delay: 1.6 });
      }});
}

The only thing you have to do is create a "div" with style "display: none" and invoke the Effect like this:

new Effect.Notify('mydiv');

Simple and powerful.