An operation display unit displays an operation screen for receiving input. A first storage unit stores therein a file that contains a definition of a screen described in a markup language, and a compound content that contains a still image and a moving image. A browser unit displays a markup content based on the definition on the operation screen by executing the file. A displaying unit displays the compound content on the operation screen. A control unit controls switch between display of the markup content and display of the compound content on the operation screen.