[xml-dev] Dealing with OO index marks

[js]

I'm looking for a way to support OO's index mark start and end elements 
when converting to docbook xml.  The OO input looks like 
     <text:p text:style-name="P1">Pentium 4 or Xeon processor, 
        <text:alphabetical-index-mark-start text:id="IMark299746988"/>
                HyperThreaded 
        <text:alphabetical-index-mark-end text:id="IMark299746988"/>
        or dual code, 3GHz or faster
     </text:p>

I'm trying to translate this to a docbook IndextTerm  with "HyperThreaded" 
the primary element value ie:
<indexterm>
        <primary>HyperThreaded</primary>
</indexterm>

 I have not been able to find a way to isolate the text "HyperThreaded" 
between the index start and end elements.  Does anyone know of a way to do 
this in XSL?

Regards,
Jay Sacco