svg generates iframe?

It appears this is only a firefox issue.

Is there any other output format (like the image map) I can use that supports clickable regions?

I did try... no luck. It appears there is something mismatched with the generated html. Take a look (note especially the "usemap" attribute in the img tag not matching the "id" attribute of the map tag):

<div class="content"><div class="graphviz-image">
  <img src="http://fepcorp/File/graphviz/806ba56b64afc309c5c3fee0ef68a34a_0.jpg" title="Business Solutions Administration" alt="graphviz_filter rendering" usemap="#G" />
    <map id="org_chart" name="org_chart">
        <area shape="rect" href="http://fepcorp/user/381" title="Quarterman, Robert" alt="" coords="189,6,357,54"/>
        <area shape="rect" href="http://fepcorp/user/124" title="Parlett, Henry" alt="" coords="212,102,335,150"/>
        <area shape="rect" href="http://fepcorp/user/124" title="Katz, Dan" alt="" coords="5,198,101,246"/>
        <area shape="rect" href="http://fepcorp/user/124" title="Waring, David" alt="" coords="125,198,256,246"/>
        <area shape="rect" href="http://fepcorp/user/124" title="Fonville, Deborah" alt="" coords="280,198,432,246"/>
        <area shape="rect" href="http://fepcorp/user/124" title="Valdellon, Aldrin" alt="" coords="456,198,605,246"/>
    </map>
</div>

Great - thanks again

It works! Nice job.

Thanks again.