Image maps in PDF output

[Tyson Marchuk <tmarchuk@cdlsystems.com>]

Hello,

I'm new to Docbook and I'm trying to create an image map (click-able 
image where clicking different sections of the image results in going to 
different locations in the document) in a PDF document. I've run across 
this reference (http://www.sagehill.net/docbookxsl/Imagemaps.html) which 
seems to suggest this can't be done in PDFs with Docbook but it was 
published in 2007 and I saw a post on this mailing list from 2012 
(http://lists.oasis-open.org/archives/docbook-apps/201202/msg00010.html) 
which seems to suggest it should work in PDFs. I've used the example 
code from the first link with slight modifications (copied below) on one 
of my graphics and changed the stylesheet to only use numbers and while 
the output does have the numbers and text below the graphic there does 
not appear to be any linking going on in the document between the 
graphic and callouts.

Is this a limitation of PDFs or Docbook or am I doing something wrong?

Thank you for your time and help,
Tyson Marchuk

<mediaobjectco>
<imageobjectco>
<areaspec id="map1" units="calspair">
<area linkends="callout1" coords="0,0 5000,10000" id="area1"/>
<area linkends="callout2" coords="5000,0 10000,10000" id="area2"/>
</areaspec>
<imageobject>
<imagedata fileref="images/myImage.png" />
</imageobject>
<calloutlist>
<callout arearefs="area1" id="callout1">
<para>My only callout1</para>
</callout>
<callout arearefs="area2" id="callout2">
<para>My only callout2</para>
</callout>
</calloutlist>
</imageobjectco>
</mediaobjectco>