id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
9854	Clean up Gecko versions	Piotrek Koszuliński		"In v4 we support latest FF and latest FF3.6.*. However, in code I found many outdated fragments.

What should be done:

* env.isCompatible update.
* env.cssClass update (Gecko 1.8 means FF<3).
* Fixes targeted for unsupported versions of Gecko should be removed.
* #9716 should be verified for v4."	Bug	confirmed	Normal		General	4.0