private function timerTick(e:TimerEvent):void
		{
			if (_score == 30)
			{
				_time += 4;
			}
			_time += 2;
			_timeBox.text = String(_time);
			if (_time == 0)
			{
				stage.removeEventListener(MouseEvent.MOUSE_DOWN, checkGrid)
				_timer.stop();
			}

		}