An operator presses an e-mail mode selecting key, and a control unit shifts an e-mail mode from a standby mode. A display device displays a menu selecting screen of an e-mail and the operator thereafter creates the e-mail while viewing a display screen. The operator presses a mode switching key to refer to the content of a predetermined homepage, and the control unit shifts to a browser mode from the e-mail mode in which the display device displays a menu selecting screen of a browser and the operator browses the homepage after inputting a corresponding URL. The operator presses the mode switching key in the browser mode and the control unit shifts, from the browser mode, to the e-mail mode in which the display device returns to the screen for creating the e-mail. The operator continuously creates the e-mail.