Custom style scroll bar

Question

Does anyone here know any tutorial/guide lines/link that will help me create an scrollbar like the one at http://www.wdyl.com/#apple [on the left top]

Answer 1

Yes, jQuery.fracs, which I read about just the other day on daily.js.

It does not have the magnifying effect like the link in the question, however it does generate a dimensionally correct tiny version of the page it is on, which I think is really smart.