TOPIC: List of Attendees

I love this feature, I was just wondering if it was possible to pass along sorting either via the URL or some jscript code within the page, for example, we run jiu jitsu tournaments, you can see a list here http://www.copaontario.org/index.php?option=com_dtregister&eventId=6&task=registrant_list&Itemid=98 and right now it sorts by registrant ID, we would love to be able to sort by weight class and then belt rank, is it possible?