public function request($arg)
 {
     $id = isset($_GET['id']) ? (int) $_GET['id'] : 1;
     if (!$this->itemexists($id)) {
         return turlmap::redir301('/');
     }
     $item = $this->getitem($id);
     $url = $item['url'];
     if (!strpos($url, '.')) {
         $url = litepublisher::$options->url . litepublisher::$options->home;
     }
     if (!strbegin($url, 'http://')) {
         $url = 'http://' . $url;
     }
     turlmap::redir($url);
 }