function on_start() {         
  $html = Loader::helper('html');

  // add advanced tooltips to every page
  $v = View::getInstance();
  $v->addHeaderItem($html->javascript('jquery.tipTip.minified.js', $this->pkgHandle));
  $v->addHeaderItem($html->css('tipTip.css', $this->pkgHandle));

  $v->addHeaderItem('<script type="text/javascript">$(function(){ $("[title]").tipTip(); });</script>');

  // inform about new users
  Events::extend('on_user_add', 
       'UserInformation', 
       'userAdd', 
       'packages/' . $this->pkgHandle . '/models/user_information.php');

// include MSIE fix
$v->addHeaderItem('<!--[if lt IE 8]><script src="http://ie7-js.googlecode.com/svn/version/2.1(beta4)/IE8.js"></script><![endif]-->');
}