I have the following response XML being returned in xmlhttp.responseXML.

Code:
<?xml version="1.0" encoding="UTF-8" standalone="no" ?>
<select class="combos" id="industrySubcatgPopup">

  <option>Baskets</option>

  <option>eveningwear</option>

  <option>flooring</option>

  <option>furniture</option>

  <option>glassware</option>

</select>
I need to extract the "id" from the above file so I know which popup menu to replace. What is the proper syntax?

Thanks.