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Demo: http://monstercyb.org/gordon/showandtell/beachball
2010 April 21. Beachballing. 2D transforms to create the spinning beachball cursor from Mac OS X.
Tested as working in: Firefox, Chrome, Safari, Opera 10.5+, MobileSafari. Should also work everywhere else once those browsers support 2d transforms.
Still image taken from Flash-based MarbleOfDoom.com, and Photoshopped to recreate the spiral stripes as a new layer while removing the original stripes.