[jQuery] Need An Example On Parsing My XML

[Simon]

Hi there.

I need an example in parsing the following XML using jQuery:

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<ns3:Account xmlns:ns2="http://oec.api.opsource.net/schemas/
organization" .. >
<ns3:userName>rdyer</ns3:userName>
<ns3:fullName>Joe Public</ns3:fullName>
<ns3:firstName>Joe</ns3:firstName>
<ns3:lastName>Public</ns3:lastName>
<ns3:emailAddress>jpublic24...@pop.net</ns3:emailAddress>
<ns3:orgId>1831c1a9-9c03-44df-a5a4-f2a4662d6bde</ns3:orgId>
<ns3:roles>
<ns3:role>
<ns3:name>primary administrator</ns3:name>
</ns3:role>
</ns3:roles>
</ns3:Account>

Essentially, I want to print out the contents of what's in
ns3:userName.