I am trying to create a clickable button.  The output looks fine, but the button does not work.  Here is my element structure...

 

<section id="section_cmd_button">
  <xref href="../how_to/file_save.xml#file_save" type="reference" format="html">
   <image placement="inline" align="center" href="../images/how_to.gif" width="82" height="27" id="image_how_to"></image></xref>
 </section>

 

It is a How To button that should take the user to the file_save topic.  Can someone tell what I'm doing wrong?

 

Thank you.

-Linda