A GUI placement information file in which the positions of GUIs are set as the ratio to the screen size and the sizes of the GUIs are set as fixed length is prepared in association with content. In a screen having such a screen size A that the GUIs do not overlap with each other even when the setting is obeyed, the respective GUIs are displayed with the positions and sizes in accordance with the setting of the GUI placement information file (screen 134). In a screen having such a screen size B that GUIs become a state of overlapping with each other when the setting is obeyed, the setting of the position of the relevant GUI is invalidated and the position is so decided that these GUIs abut on each other (screen 136). In the case of a screen having such a screen size C that a GUI becomes a state of running off the screen when the set sizes are obeyed even in the state in which the GUIs abut on each other, the sizes of the respective GUIs are reduced depending on the screen size and the GUIs are displayed in a packed manner (screen 138).