Given the following XML code:

 <set name="thumbsBooks">
     <set name="pdf">
         <thumb>Data I want to access</thumb>
         <thumb>Data I want to access</thumb>
     </set>
     <set name="printed">
         <thumb>Data I don't want to access</thumb>
         <thumb>Data I don't want to access</thumb>
     </set>
 <set>

I want to be able to get the data contained in the "thumb" tags using the "name" attribute value of the parent tag as a selector, something like you would do in jQuery: $('set[name="pdf"]').find('thumb');

Is there a method like this in Action Script 2 (can't use AS3)?