addTabsProgressListener( listener )- Return type: no return value
- Add a progress listener to the browser which will monitor loaded documents in all tabs in the tabbed browser. The progress listener should be based on the
nsIWebProgressListenerinterface with an additional "browser" argument as the first argument of every method, which is thebrowser(not <tabbrowser> = gBrowser) where the event occurred. See Listening to events on all tabs for details.
