Seen the demo. It's awfully slow loading for me, but I see what you mean.
Amusingly, I've had someone ask me how to implement something like that just this
afternoon. In principle the implementation should be quite simple, so I'll think about
it. The only thing I'm not sure how to deal with is how to define those "doublezooms"...
@Bob: gemeint ist, dass statt einem Bild im Zoom, z.B. einer fuer die linke Seite und
einer fuer die rechte, ein gemeinsamer Zoom verfuegbar ist, in dem beide Seiten drin
sind.