Next I note the coordinates of the lower-right corner. This process is repeated for each clickable region. When you have your A NAME tags, and your region coordinates and corresponding URLs, you are ready to write the HTML code for the imagemaps. The map name Give the map a name. The area tag has a shape attribute.
Some current browsers recognize only the rectangular shape and default.
The area tag has a coords attribute. For rects, give the upper left and lower right coordinates in pixels. For circles, give the x and y for the center point and the radius in pixels. For polygons, the format is x comma y comma for each point of the polygon, going all the way around the polygon. In addition to giving the map name and a list of regions, you will need to call the image and close the map.