Does anyone know which seats on AirTran have moveable arm rests on the aisle in economy class? According to their web site all AirTran aircraft have a selection of seats with moveable armrests, but it doesn't say which seats these are. I have an injured shoulder and it is much more comfortable with the arm rest up. I know many long-haul planes have this feature (Singapore Airlines, American and Qantas), but I've never flown AirTran before. Thanks.