public static function getJSmimeTypesStruct($mimetypes = null)
 {
     if (is_null($mimetypes)) {
         $mimetypes = SearchHelper::getMimeTypes();
     }
     $mt = 0;
     $mimetypes_str = '[';
     foreach ($mimetypes as $user) {
         if ($mt++ > 0) {
             $mimetypes_str .= ',';
         }
         $name = $user['name'];
         $mimetypes_str .= "\n\t\"{$name}\"";
     }
     $mimetypes_str .= ']';
     return $mimetypes_str;
 }