A graphical user interface is disclosed which achieves an easy search for a desired item. When an operation inputting section accepts a selective operation input for selection of one of plural processing functions, plural representation images individually representing plural processing object items of the processing function are displayed in an array along one direction of a display screen such that one of the representation images can be selected as a noticed representation image by an inputting operation through the operation inputting section. A decision section decides whether or not plural processing object items of the selected processing function are divided in a plurality of groups. If the processing object items are divided in groups, then the group name of the group to which the processing object item of the noticed representation image belongs is displayed in the proximity of the noticed representation image.