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On Tue, 7 Sep 2010 10:00:17 -0700 (PDT), Richard Fangnail wrote:

> Google has been having home pages with animation but they also respond
> to the mouse moving. Two were bucky ball and now, colorful circles.
>
> I thought you needed to use flash in order for a graphic to respond to
> the mouse, or can you do it with just an animated gif?

That trick has been around well before flash was even conceived.
Any image can be used to act in accordance with the mouse or click.
Look up "OnMouseOver" and "OnMouseClick".
PHP, ASP, and other languages also use the same methods. So it is not
limited to flash.