var messenger =
{
  settings :
  {
    timeRemove : 5000
  },
  init: function()
  {
    if($('messages'))
    {
      new Effect.Highlight
      (
        $('messages'),
        { startcolor: '#ffff99', endcolor: '#efefef' }
      ); 
      setTimeout("messenger.remove()", messenger.settings.timeRemove)
    }
  },
  remove : function()
  {
    if($('messages'))
      $('messages').fade();
  }
}

//on dom loaded
document.observe('dom:loaded', function() { messenger.init(); }, false);