scroll bars width

[raulishnikov]

I've seen very narrow scroll bars, and they look very neat, i had change the color but wnat them narrower for the left frame, what can i do?
I tried css in the same manner as for change color but didnt work.
Can you please help me?

[Nevermore]

I think you have to make your own scrollbars from scratch - for a really unique effect, it is possible to use pictures as scrollbars.