UpdatePanel and Response.Redirect

My idea is to have a "page tabs" control in the top of the page, like PageFlakes (http://www.pageflakes.com ) or Windows Live ( http://www.live.com/ - "personalize your homepage").

So when the user clicks a tab to change to another page, it won't flicker the entire browser screen, but instead load the new page contens in the center part of the screen.

Any idea on how to implement this?

Thanks