Click the Live Odds at the top of the page to view the SBR Odds page. Once you're in there, make sure you're in the NBA or whatever sport you want to see. For the Line Type choose Totals O/U, for example. Find the game you're interested in and even the book you want, if applicable. Then click on that box showing the line - the menu will drop down and show you the history for that particular book up to the latest change, which should be real-time.
Make sense?
Make sense?