I see you're trying to automatically track Airborne Express shipments. We've been doing that here for a while with LWP::UserAgent. Don't worry about the Javascript, make sure you are accepting cookies though.

The crux of your problem is the query string you are sending - it looks like you viewed the HTML source to try and figure out how to construct it. That won't work, try this instead:

http://track.airborne.com/TrackByNbr.asp?ShipmentNumber=$yourTrackNo
[download]

-- vek --