This script gives the following:

+ Interface tweaks. Top navigation bar has fixed position, bottom navigation bar is hidden, new thread/reply form has fixed position and its layout is lightened, email field is replaced by 'sage'-checkbox, navbar and reply form are collapsible

+ Quick-reply feature

+ 'Open in thread' feature. Click on thumbnail image in thread to open it inside the thread, click again to collapse it back to thumbnail size. To open an image into new window (old behavior) click on filename

+ Worksafe mode. All thumbnails in threads are resized to 50px width

Current version is 0.7.2, Opera compatible

Known bugs:
- some problems with /o/ board, most features are disabled
- if a thumbnail is smaller than 50px in width, it is still resized to 50px exactly