A couple of requests to an already fine script:

1) Force the Reader connection to use https:// secure connection if Gmail is open securely. Maybe integrate or borrow code from 'Google Secure Pro' (http://userscripts.org/scripts/show/5951). Otherwise, it breaks the secure Gmail connection.

2) Option to have the expansion of one pane collapse the other. Frex, expanding Reader automatically collapses Gmail; collapsing Reader expands Gmail; expanding Gmail collapses Reader. A one-click switch.

3) Since all of the Reader navigation is added to the Gmail nav bar, hide the Reader chrome in the pane. It would probably be best to mirror the 'Settings' and 'My Account' links to the Gmail nav bar so the Reader top bar could be hidden as well.

Otherwise, thanks for the great work!

As with all scripts on userscripts.org, you need to have the Greasemonkey add-on for Mozilla Firefox to use.