Though probably obsolete: Add 'animated GIF as favicon'? - <https://en.wikipedia.org/wiki/Favicon#File_format_support> - Test: <http://pipa.ws/favicon.html> (via <http://myvogonpoetry.com/wp/2005/10/10/animated-favicons/>)