1. An information processing method for displaying information including at least one processing region subject to processing and displaying a cursor on the displayed information, the information processing method comprising the steps of: assigning the processing region to an operating element of an operation input device in accordance with a positional relationship between a cursor display position of the cursor on a display screen and the processing region; in the processing region on the display screen, displaying an operating element image representing the assigned operating element; and in response to an operation input from the assigned operating element, executing processing corresponding to the processing region assigned to the operating element.