To easily input various kinds of navigation functions to a navigator by selecting a mark which is always displayed on the screen of the navigator during navigating operations as an icon.

During navigating operations, a car mark icon indicating the present location and azimuth of a vehicle, a GPS icon indicting the receiving state of the GPS, a route guiding icon indicating the distance and azimuth to a destination, a scale icon indicating the scale of a currently displayed map, and a map indicating icon indicating the displaying azimuth of the map are displayed on the screen of a navigator. When the user of the device wants to make present location correction, etc., the user selects the icon highlighted by means of a highlighting means with a joy stick, etc., and confirms the icon. As a result, the user can make the present location correction, etc., by means of a function executing means.