How to make ThinkPad scroll button (part of track point) work in Firefox

I was lately working on IBM ThinkPad R51e laptop without a mouse and got annoyed that browsing webpages in Firefox is so clumsy. The problem was that I couldn’t scroll pages. The laptop has track point which theoretically should allow to scroll (press middle button and move track point), and t worked for most applications but not in one of most used one, i.e. in Firefox.

Some search brought me 2 suggestions:

1. change scrolling to smooth (control panel>mouse>track point: choose scrolling for middle button setting and additionally in settings… choose smooth scroll type)
2. install newest drivers

None of these worked as expected.  It allowed to scroll in Firefox, but not in the way I used to and it changed behaviour of other applications (e.g. Thunderbird) in a way I couldn’t scroll there (i.e. middle button was not activating scrolling but acted as middle button click – it was opening an email in new tab).

Finally I found out the solution:

1. restore old drivers
2. set scroll to standard (control panel>mouse>track point: choose scrolling for middle button setting and additionally in settings… choose standard scroll type) – so now everything works as before
3. edit tp4table.dat in your system (should be in c:\windows\system32\) by adding line:
   *,*,firefox.exe,*,*,*,WheelStd,1,9
   before the line:
   [AutoScrollTable]
   – now scrolling (including vertical) should work in Firefox