A method of displaying an on-screen graphical user interface comprising reading data for a plurality of user-selectable icons associated with attributes and data for a plurality of content icons representing respective items of contents and generating image data for the on-screen graphical user-interface with a two-dimensional array which includes a first array comprising the plurality of user-selectable icons adapted to be arranged in a specific direction on a screen and which is also adapted to include a second array comprising the plurality of content icons in a direction intersecting the first array on the screen, and outputting the image data for the on-screen graphical user interface related to displaying the contents to a display device.