The ImageMap control enables you to create a client-side image map. An image map displays an image. When you click different areas of the image, things happen.

A HotSpot defines the clickable regions in an image map.
CircleHotSpot—Enables you to define a circular region in an image map. PolygonHotSpot—Enables you to define an irregularly shaped region in an image map.
RectangleHotSpot—Enables you to define a rectangular region in an image map.