一个显示电梯楼层的控件，可以设置电梯的总的层数，电梯的首层，然后根据控件的curfloor，可以动态的显示当前电梯所在的楼层。-a show floors of the elevator control, can lift the total installed the floors, the first floor elevator, then under the control curfloor can display the current dynamic where the elevat