You'd need image maps for that. Make an area map for each person's name on the chart, and have an onMouseOver event that opens a javascript window. So for each person on the chart, put this in the head of the html:
HTML Code:
<map name="company_tree_chart_map">
<area shape="rect" alt="About Person's Name" coords="x1,y1,x2,y2" href="#" onMouseOver="window.open('url_of_info_on_person', 'window_name'); return false;" />
<area shape="rect" alt="About Another Person's Name" coords="x3,y3,x4,y4" href="#" onMouseOver="window.open('url_of_info_on_another_person', 'window_name'); return false;" />
<area shape="rect" alt="About Third Person's Name" coords="x5,y5,x6,y6" href="#" onMouseOver="window.open('url_of_info_on_third_person', 'window_name'); return false;" />
<!-- etc, etc. You know, one for each person -->
<!-- the x and y coordinates are the top left and bottom right corners of where you want the map to be, btw. -->
</map>
Then in the body, call the image like this:
HTML Code:
<img src="path_to_image" border="0" alt="" usemap="#company_tree_chart_map" ismap />
That should do it.
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