Client-side image maps shall be provided instead of server-side image maps except where the regions cannot be defined with an available geometric shape.

-- Consistent with WCAG 9.1

Client-side image maps allow the user to select what link the user will follow based on the user’s “click”.
To meet the requirements to Client Side Image Maps:

Provide alt-text for image used as map.

Provide alt-text for all “areas” of map.

Use software tool to define “areas” of map and generate the “coords” of the “area”
 

Method:
Use “alt” and “usemap”attributes of IMAGE tag; also map tag and “alt” of area tag.

<img src=“clientsidemap.gif” usemap=“#Amap” alt=“North Carolina Map”><map name=“Amap”><area shape=“rect” coords=“1,1,1,1” href=“mountains.htm” alt=“Mountains of North Carolina”></map>