[&Fx40] Issue 3586: 	FF4 + GM + FB = hang; use FF4 outerWindowID to prevent infinite loop in getRootWindow
[&Fx40] Issue 3586: 	FF4 + GM + FB = hang;
use FF4 outerWindowID to prevent infinite loop in getRootWindow

http://code.google.com/p/fbug/source/detail?r=8435

firebug/tracing-console,firebug/tracing-console