Generically Finding Parent Elements

Hi All

Im struggling with a problem. Assume I have the following XML

<?xml version="1.0"?>
<ROOT>
 <DEPTS>
  <DEPT>
   <DEPTNO>10</DEPTNO>
   <DEPTNAME>Accounting</DEPTNAME>
   <EMPLOYEES>
    <EMPLOYEE>
     <EMPNUM>10001</EMPNUM>
     <EMPNAME>Jo Bloggs</EMPNAME>
     <SALARY>100000</SALARY>
    </EMPLOYEE>
    <EMPLOYEE>
     <EMPNUM>10002</EMPNUM>
     <EMPNAME>Jo Smother</EMPNAME>
     <SALARY>220000</SALARY>
    </EMPLOYEE>
    <EMPLOYEE>
     <EMPNUM>10003</EMPNUM>
     <EMPNAME>James Dean</EMPNAME>
     <SALARY>1000</SALARY>
    </EMPLOYEE>
   </EMPLOYEES>
  </DEPT>
  <DEPT>
   <DEPTNO>20</DEPTNO>
   <DEPTNAME>Shipping</DEPTNAME>
   <EMPLOYEES>
    <EMPLOYEE>
     <EMPNUM>20001</EMPNUM>
     <EMPNAME>Dave Gibbons</EMPNAME>
     <SALARY>100000</SALARY>
    </EMPLOYEE>
    <EMPLOYEE>
     <EMPNUM>20002</EMPNUM>
     <EMPNAME>John Fisher</EMPNAME>
     <SALARY>220000</SALARY>
    </EMPLOYEE>
    <EMPLOYEE>
     <EMPNUM>20003</EMPNUM>
     <EMPNAME>Marti Johnson</EMPNAME>
     <SALARY>1000</SALARY>
    </EMPLOYEE>
   </EMPLOYEES>
  </DEPT>
 </DEPTS>
</ROOT>

This is just a sample XML the XSL template needs to handle any number
of levels in the XML - the only known element is the ROOT name. I need
to be able to pull the parent node tree into a variable so I can then
loop over them. The looping I can handle, any help on grabbing the
parent element names in a tree gratefully received.

Thanks

Tim