>>993
>>994
Why not use the 4chanX user script? It can do everything 4chan extension can do, but better and with many more features.
Install greasemonkey extension for firefox, which will enable you to install user scripts, then go here
http://mayhemydg.github.com/4chan-x/ and install the script.
After it is installed, you will see a [4chan x] link near where the board links are. This link will open settings which will let you choose what features you want.