Just a quick database design question

[eluser]brianw1975[/eluser]
No, as of ff3.0.13 it does not store separate session data for each tab (or window), it would require setting multiple cookies for any one site and then opening a new tab would require you to log into a site you are already logged into, etc... would get very annoying, very quickly, and be an utter nightmare when recovering from crashes.

As far as administrative areas goes (the actual OP), i tend to make one administrative area and then assign different permission levels for the admin users with highest level going to the site owner (you could even make it so that the site owner is a separate session var. Either way, start at the top (100) with admin user level with most access, then next level down at 90, then reduce by 10 per level, this will give you the ability to add levels in there later on easily if needed.

then based on their access level you can (not)display content based on that level -- one of the Auth libraries would be a good place to start