[arebop]

GreaseMonkey scripts can modify the page contents, and if only GreaseMonkey scripts could run before whatever JavaScript is included with the page could start, then it could completely replace the site's script rather than just modifying its behavior shortly after the site's script begins to run. I think so anyway, I haven't actually implemented this so I won't claim to know for sure that it can be done.

Chromium has this "early injection" feature for GreaseMonkey scripts, so that's one free browser for which it would be very easy to build Stallman's replacement feature. See the link I gave earlier in this thread and also http://www.mail-archive.com/[e-mail]... for some background.