How can I add image map on drupal?
Try the jQuery Map Hilight module


  It enables the simple addition of mouseover highlighting of hotspots to HTML image maps without requiring the editing of theme files or knowledge of javascript/jquery. 


Features


provides simple interactive graphics via HTML image maps (no flash
required).
easy to use: either select the 'highlight all image maps' default
setting or simply add class="jq_maphilight" to the  tag of any
specific image map you wish to highlight.
no jquery or javascript knowledge required: plugin configuration is
handled via an admin/settings screen rather than having to enter
jquery code.
fully configurable: options for fill, fill color, fill opacity,
outline, outline color, outline opacity, outline thickness, as well
as a fade effect.
per image map settings: add image map specific options with an
additional class.