function DetectNintendo()
   {
      if (stripos($this->useragent, $this->deviceNintendo) > -1 || 
           stripos($this->useragent, $this->deviceWii) > -1 ||
           stripos($this->useragent, $this->deviceNintendoDs) > -1)
         return $this->true; 
      else
         return $this->false; 
   }