An image processing apparatus includes a CPU core, and displays a related image according to selection of a main menu icon. For example, in a case that a timer counting for each frame holds a predetermined value, it is determined whether or not the display of the related image has to be switched. If it is determined that the switch is necessary, the display of the related image is switched, and if it is not necessary, the display of the related image is not switched. The time is reset when the selection of the main menu icon and the display of the related image are changed. For example, in a case that selection of the main menu icon continues to be quickly changed, the timer does not reach the predetermined value, so that the related image is never switched.