Pretty dots!

Hi guys.

I was just enjoying the tutorials and looking through this tutorial on making a full flash website. URL is here:

Now, the tutorial is clear enough. I just noticed as I looked through the .fla file the very pretty dots effect going on in the background, where the position of your mouse changes how fast the dots go.

Could anyone tell me how to do that? Or point me towards a thread/tutorial that will do so?

Thanks all! :love: