Painted windows

This is the second thread about this site. I saw this effect on one of the ‘cool sites’ mentioned on kirupa (which I am new to) and wanted to recreate it. I thought the one I saw on kirupa could be improved (behind every good invention is someone elses idea) so added easing to it. Can you test it on your browser and see if it is working, please

http://www.rkirby.com/epproach/company.htm