Imagemaps Imagemaps Client-side imagemap processing is supported by most current web browsers.
Older browsers require server-side processing, which adds slightly to the complexity of the task.
The information needed to interpret the imagemap data is contained in a named Map Reference Element, generally in the same HTM file which calls up the imagemap. This sensitive area in this example is a polygon surrounding the hotspot. The polygon is a hyperlink to this file, advance2.htm.