This is Simple Class Selector It also can easily edited.
This is the keys you will change the class can be edited.
F6 - Team toggle
F8 - Field Ops
F9 - Engineer
F10 - Covert Ops
F11 - Soldier
F12 - Spectator
File is attached here http://forum.trackbase.net/attachment.php?attachmentid=6&d=1286742540
By: Adrian - http://forum.trackbase.net/threads/34-Script-Class-Selector