There is provided a projector having a projecting unit, a projecting system which projects video onto a projection surface by use of the projecting unit, a projecting direction judgment system which judges a projecting direction of the projecting system, and a menu image generating system which generates a menu image, as video generated in the projector as the video to be projected by the projecting system, so that the menu image suits the projecting direction judged by the projecting direction judgment system.