GIFgraph::Map can generate HTML map text.
$map = new GIFgraph::Map($gr_object);
$map->set(key1 => value1, key2 => value2 ...);
$HTML_map = $map->imagemap($gr_file, @data);
Is a perl5 module to generate HTML map text for following graph objects GIFgraph::pie, GIFgraph::bars, GIFgraph::point and GIFgraph::linespoints. As a result of its work is created HTML code containing IMG and MAP tags.
You simply need to insert this code into the necessary place of your page. In the inserted thus image, its certain parts are the references and at a choice their mouse in a status line of your browser displays the additional information.(See Samples).