There are a number of directories here, corresponding to the different
underlying JPEG 2000 libraries I've tried using for render-jp2.

Each directory contains a mozilla directory, which mirrors the layout of
    the main mozilla trunk checkout. At the time of this writing, that
    means your tree should have a 'render-jp2' directory added to
    the extensions directory of the root mozilla folder:

Right now, this extension targets Firefox 3.0 and Firefox 2.0.
It has been tested on the following platforms:
    Windows XP
    Linux (Ubuntu)
    Mac OS X
    
If you find this works on additional platforms, please let me know!