I'm not exactly sure what you are wanting to do. Did you want to know if there is a way to keep moving the window off of the left side of the left monitor and have it appear on the right side of the right monitor?
If that's not what you want, then let us know. If that is what you want to do, I don't think there's any simple way to do so, but it would be a neat feature.
Running on a 4-slot toaster @ 60Hz