Well, maybe not exactly, but it's a fun diversion when one's needed. Here's several different versions. Use your mouse to pass over the graphic area. Right-click resets the behavior.
http://www.eigelb.at/HP/Links/SpecialEf ... index.html
http://www.eigelb.at/HP/Links/SpecialEf ... index.html
http://www.eigelb.at/HP/Links/SpecialEf ... index.html
http://www.eigelb.at/HP/Links/SpecialEf ... index.html
http://www.eigelb.at/HP/Links/SpecialEf ... index.html
White and BR are definately my favorites..