I have an unusual request. My client wants a screen saver, but not a real "windows" screen saver. He just wants a scrolling message like the (windows text marquee screensaver) whenever the user has not been active on a page for 20 minutes. Then when they are active on the site again he wants to be able to just remove the message and continue back to where they were. Is there some sort of count down to 20 minutes before a scrolling text layer would appear? Maybe similar to the popups on this site?