function DetectBlackBerryTouch()
   {  
       if ((stripos($this->useragent, $this->deviceBBStorm) > -1) ||
		(stripos($this->useragent, $this->deviceBBTorch) > -1) ||
		(stripos($this->useragent, $this->deviceBBBoldTouch) > -1) ||
		(stripos($this->useragent, $this->deviceBBCurveTouch) > -1))
         return $this->true; 
       else
         return $this->false; 
   }