elevator: Small refactoring.
elevator: Small refactoring.

vlstill/ttk4145,vlstill/ttk4145,vlstill/ttk4145,vlstill/ttk4145,vlstill/ttk4145,vlstill/ttk4145,superboy0712/realtime,superboy0712/realtime,superboy0712/realtime,superboy0712/realtime,superboy0712/realtime,superboy0712/realtime