A display device, which defines an attached state or a removed state with respect to an electronic appliance, includes a display section, a driver for driving the display section, a transceiver for transmitting or receiving a signal tofrom the electronic appliance, and a system controller for controlling the driver and the transceiver. This enables the measurement of a deflection characteristic of a mirror system having the mirror plane variable to arrange the inclination within a short period of time and with high accuracy. A skirt is mounted to a periphery of the platform and surrounds the platform for retaining water with the platform for a nurse to conveniently clean the body of the patient who lies on the platform. The plurality of support members include a plurality of mounting surfaces adjacent to the apertures. However, if the player falls below the threshold of visits required within the period, the status of regular visitor is lost by the player, and the player may regain the regular status by meeting the requirement again. The controller may be configured to adjust a moving picture or an image displayed on the display unit based on ambient brightness.