Re: Scrollbar Code

> Nor even that a screen, or any means of visual presentation, exists.
* But I hope that no one would
> argue that this means CSS should not contain any visual styling support.

There is the implication that there is a device that supports visual
styling, but the only requirement for scrolling is that there be some
means to scroll parts of the display.  That means could be a mouse roller
wheel, or dragging the display, e.g. Acrobat Reader can scroll but doesn't
have scroll bars.  These are therefore in different categories:
one is fundamental to visual CSS; the other is a consequence of the user
interface conventions of particular graphical user interface environments.