Conceptual questions about sessions

[Dudsmack]

Hows are session maintained? If I opened a new/tab window and maintain activety in both 'pages' are sessions still maintained correctly in all situations?

I've noticed sessions are not maintained from browser to browser...what variables does the parser use to maintain a session?

[Jona]

Sessions are temporary cookies -- a session in one tab, is a session in another; however, it's not effective cross-browser, as different browsers store cookies in different loations.