Abstract: A display unit for a vehicular navigation system, which has a relatively small display unit that information displayed thereon can be clearly recognized from any position, when information such as texts or images are displayed on the relatively small display screen. The display unit is provided with a display screen for displaying HTML data made up of text data or image data, and a controller for vertically scrolling the text data or the image data in the display screen. The controller further sets display restriction areas at both peripheral sides of the display screen. Each of the display restriction areas corresponds to a width of two characters toward a center portion of the display screen from each peripheral end. As a result, the HTML data is not displayed at peripheral portions in the display screen at which it is hard to be recognized. As a result, user can clearly recognize all of the HTML data displayed on the display screen.