public function javascriptTemplate($file, $vars, $uniquenessID = null)
 {
     if (defined('INFOBOXES_DIR') && $file == INFOBOXES_DIR . '/javascript/InfoBoxes.js') {
         $uniquenessID = INFOBOXES_DIR . '/javascript/InfoBoxes.js';
         Requirements::block_ajax($uniquenessID);
         if (isset($vars['Data']) && $vars['Data'] === ']') {
             $vars['Data'] = '[]';
         }
     }
     return parent::javascriptTemplate($file, $vars, $uniquenessID);
 }