b5a72d10_Start_Button___FirebugWiki__Option
[Preference] extensions.firebug.allPagesActivation [Shortcut] - [Description] If enabled (set to "on"), the Firebug UI will be opened for every website and the Disable button will be hidden [Option] 
On for All Web Pages
F i r e b u g U I L o c a t i o n
C l e a r C o n s o l e
S h o w E r r o r C o u n t
E n a b l e A l l P a n e l s
D i s a b l e A l l P a n e l s
O n f o r A l l W e b P a g e s
Start Button - FirebugWiki