1. A display apparatus comprising: a display panel: a user input switch for inputting a first switching instruction, and for inputting a second switching instruction from the user; and a processor configured to perform the steps of: managing a display order of image data files and associated text data; selecting text data to be displayed, the text data corresponding to image data from a selected one of the image data files; displaying the selected text data on the display panel responsive to the first switching instruction; continuously switching the displayed text data in the display order; judging whether the second switching instruction has been input by the user when the text data is being displayed; and shifting the display to a display of 1) an image corresponding to the displayed text data and 2) an image string representing a plurality of the image data files which follow the image corresponding to the displayed text data in the display order when the second switching instruction is input.