An information recording medium (100) on which there are recorded: a series of content information which includes an image portion which can be a background image; button information (301) for defining a button menu which allows an operation as for the content information and which is displayed during the reproduction of the content information; and play list information (120) for defining reproduction sequence of the content information by a unit of item, which constitutes the content information and which is accessible upon reproduction, the button information including a plurality of button pages (301p) each of which can constitute the button menu and whose display can be changed to each other.