public function ResponseClass($Class) {
      $Code = (string)$this->ResponseStatus;
      if (is_null($Code)) return FALSE;
      if (strlen($Code) != strlen($Class)) return FALSE;
      
      for ($i = 0; $i < strlen($Class); $i++)
         if ($Class{$i} != 'x' && $Class{$i} != $Code{$i}) return FALSE;
      
      return TRUE;
   }