Peter- Saturday, July 2, 2011, 6:56:11 AM, you wrote: > I posted a stack to RevOnline demonstrating one of the illusions > from the boingboing page. See "optical illusion" Nice. I've been meaning to do some of these ever since I followed the boingboing link. http://illusioncontest.neuralcorrelate.com/ -- -Mark Wieder mwieder at ahsoftware.net