A navigation device in which, in accordance with a scrolling instruction given
by a user during display on a first screen, a map image is scrolled along a road
on which a vehicle position mark is positioned up to a position in a second screen
in which a next main intersection is situated at the center of the screen. Regardless
of whether a guide route is set, the map image can be scrolled along the road,
and the scrolling is stopped at a main intersection that the user wants to confirm.