Attribute for <IMG ...>
ISMAP

Usage Recommendation
Use <IMG USEMAP="..."> instead.

ISMAP is part of the old-fashioned way of making image maps. image maps originally required a server-side file as well as the HTML in the page. Only the very oldest browsers don't understand client side image maps, so it's recommended you don't waste your time on ISMAP.

<IMG USEMAP="..."> >>>