[BSeward]

This is cool! An interesting experiment.

I think a quick shadow does a lot to give the divider some heft and alleviate concerns about visual ambiguity between foreground and background page.

It would look something like http://cl.ly/image/2N3B2V2d2L3W (pardon the wonky #ss_topPage). It can be done in CSS (+ two empty divs, uh) with small effort. To me it feels like the most usable skeuomorphic hint you could drop.

[rdwallis]

That looks great. I'll see if I can update it tomorrow.

[rdwallis]

Actually this doesn't really work. Mainly the problem is when the top page hasn't scrolled at all, for example if you're just using pagination, it creates a meaningless shadow.