Depth of an XML file using XSL

Hello,

  I want to find the maximum depth of an XML file.

Say I have
<abc>
  <def>
    <ghi>
      http:test.com
    </ghi>
  </def>
  <jkl>
     <mno>
       http:test2.com
     </mno>
  </jkl>
</abc>

I want the xsl code to return the depth as three. So for any generic XML tree 
how do I find the greatest depth of the xml tree?

Thanks and regards,
Priya.


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