Sorry for the multiple questions, kinda getting on a roll here.... I found a thread from January that would've answered this, but was never answered. Apologies if it's been asked before.

Is it possible to create frames inside a web page? A simple and "local" example would be one of Xara's pages: http://www.xara.com/us/products/webdesigner/features/ .....except it wouldn't be Flash of course. In other words, having the top header/navbar/etc. remain put, while tabs in the main section refresh only that part of the page with each tab's content. If that makes sense.
Thanks!!

EDIT -- I forgot to mention, I did play around a bit with adding layers, ie. pressing each tab brings up a "popup" layer, replacing the main part. It works, but of course it's *poof* once you click outside...not quite ideal.