Software to "record" a web page?

I would like to record for 24-36 hours a specific self-updating website and then play it back at 10-20 times speed.

To start off with, is this possible?

Here's a link to what I'd like to do; Flightaware, I want to isolate the aircraft arriving and departing from the rest of the page.

 

Maybe you could use a macro maker to take screen shots at an interval, then you could put them together in a movie.
Screen Shot Captor from DonationCoder has a timer..look
http://www.donationcoder.com/forum/index.php?topic=29774.0

 

Thanks foogoo, I'll give that a try.