[xsl] further question on creating an id

["林 子芯" <minikittygo@xxxxxxxxxxx>]

hi there, i was wondering anyone could help me out on this question...
suppose i have such structure...

<people>
<male>
 <person>
   <name>
     <first_name>Alan</first_name>
     <last_name>Turing</last_name>
   </name>
   <profession>computer scientist</profession>
   <profession>mathematician</profession>
   <profession>cryptographer</profession>
 </person>

 <person>
   <name>
     <first_name>Richard</first_name>
     <middle_initial>M</middle_initial>
     <last_name>Feynman</last_name>
   </name>
   <profession>physicist</profession>
   <hobby>Playing the bongoes</hobby>
 </person>
...
</technic>

<female>
<person>
   <name>
     <first_name>Shelia</first_name>
     <middle_initial>M</middle_initial>
     <last_name>Feynman</last_name>
   </name>
   <profession>mathematican</profession>
   <hobby>Jogging</hobby>
 </person>
...
</female>
</people>

my question is, i wish to transform it into a html format, is it possible 
to add an id to all the profession? will i be able to have the same id for 
identical profession? (e.g profession for mathematican will be the same 
regardless whether it is in the male element or female element)if no, is 
there a way to get round the problem? 

furthermore, i seen Andrew provide a solution for Yan for selecting an 
element dynamically, however, i was wondering how would i achieve similiar 
result using xalan and xerces?

many thanks

Kit

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