1. An information display device, comprising: a virtual space setting unit for disposing window objects and a virtual camera in a three-dimensional virtual space, and for rendering the window objects contained in a virtual image capturing area of the virtual camera; catalog display means for receiving an instruction on catalog display by arranging a plurality of window objects and changing at least one of a position and the image capturing area of the virtual camera so that all of the plurality of window objects are shown without overlapping each other; and an execution unit for receiving, while catalog display takes place, an instruction operation on any one of the window objects, and for executing a process based on the instruction operation.