This was designed to be a replacement for the default master GUI (note that it will not override the default one, however) - offering more functionality and perhaps a bit more aesthetic value. Essentially, this will allow you to perform various tasks on multiple clients simultaneously, as opposed to the default GUI for which you would need to click the 'unspec' or 'switch team' buttons multiple times. The script will also automatically determine whether the current mode is team mode or not, and structure itself based on that; allowing for easier use depending on the situation.
The GUI is bound to key "L" by default (or, you can simply type /masterpanel). Please report any concerns/issues.
Changes/Updates:
(10/22/2011) v1.0 - Initial release
(2/4/2012) v1.1 - Added guibuttons for claiming and relinquishing master.
(3/18/2012) v1.2 - Added a "clan search" feature