Jason Bassford wrote: > No they don't. (Correcting myself.) On further examination, I was > unable to find any XPI that actually modified an existing file that > was located with a .jar archive. > > Adding buttons to toolbars works by somehow (not quite sure of this > yet) creating an extra folder tree that is "used" in some manner by > Mozilla.
The magic of overlays. http://XULPlanet.com may be useful, or docs on mozilla.org -Dan Veditz
