function showFile($order_id = 0, $fid = 0)
 {
     require_once JPATH_COMPONENT . DS . 'assets' . DS . 'export_helper.php';
     $ehelper = new OnepageTemplateHelper($order_id);
     $order_id = JRequest::getVar('orderid');
     $fid = JRequest::getVar('fid');
     $ehelper->showFile($order_id, $fid);
     /*
     	
     @ob_get_clean();@ob_get_clean();@ob_get_clean();@ob_get_clean();@ob_get_clean();
     
     
     // autorization should be here!
     $ehelper = new OnepageTemplateHelper();
     $data = $ehelper->getExportItemFile($fid);
     if (!empty($data))
     {
      $pdf = urldecode($data['path']);
      if (file_exists($pdf))
      {
      $pi = pathinfo($pdf);
      $filename = $pi['basename'];
      header('Content-type: application/pdf');
      header('Content-Disposition: attachment; filename="'.$filename.'"');
      header("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
      header("Expires: Sat, 26 Jul 1997 05:00:00 GMT"); // Date in the past
      readfile($pdf);
      die();
      }
     }
     die('Cannot find the requested file!');
     */
 }