scalabe vector graphics
examples
http://www.averagejackal.net/keysplinetool.html
http://kartoweb.itc.nl/public_examples/Hoengerberg_buslines_SVG/animated_bustrack.htm
http://pilat.free.fr/english/animer/
http://doombsp.sourceforge.net/wad2svg/
reading
http://www.xml.com/pub/a/2003/07/16/svg-prescod.html
http://www.w3.org/Graphics/SVG/Overview.htm8
svg wiki
http://www.protocol7.com/svg-wiki/
also
in motion..
Dynamic SVG