see http://code.google.com/p/bigbluebutton
Developing the client
1. Copy src/conf/config.xml.dev to src/cong/config.xml
Implementing Tab Order:
If you want to use the enforced tab order for BigBlueButton (necessary for accessibility), check resources/config.xml.template and it to src/conf/config.xml.
Certain modules must have the baseTabIndex property, and for the default tab order, their values should be as follows:
101: ViewersModule (Viewers list window)
201: ListenersModule (Listeners list window)
301: VideodockModule (Webcam window)
401: PresentModule (Presentaiton window)
501: WhiteboardModule (Whiteboard toolbar)
601: ChatModule (Chat window)