Always scroll a div element and not page itself

Question

I have a page layout with an inner

element which contains the important stuff on the page. The important part about the design is:

Answer 1

If you just want to have a fixed positioned "div" and scroll only it, maybe you could use a trick like:

http://jsfiddle.net/3cpvT/

Scrolling with mouse wheel and all kinds of keys works as expected. Only thing is that the scrollbar is on the document body only.