>> BTW: if you
want a
>really< interesting background, then use an animated gif
>
> Uh, what?
>
You know that gifs can
be animated.
This, aside from being reliably transparent in any browser, is the main
attraction of this format. And any image, even an animated one, can be
displayed
as background.
I once designed a
backgound for a
bathroom shop which would display ascending bubbles on a blue background
by
first creating a seamlessly tileable background and then animating the
bubbles
into a gif. Seven years ago this was a nice way to animate an
intro-screen...
but since I got paid for it I cannot post it.
So I quickly cooked up
a small ani:
after 4s it will chage colours, do this 4 times, then stop changing for
the rest
of the session.
Try making a webpage
with the
attached image as background.
Maybe your newsreader
will show it,
too, though I would not rely on this.