+ - YUI compressor (BSD License)
+
+rgbcolor: http://www.phpied.com/rgb-color-parser-in-javascript/
+strftime: http://tech.bluesmoon.info/2008/04/strftime-in-javascript.html
+excanvas: http://code.google.com/p/explorercanvas/
+yui compressor: http://developer.yahoo.com/yui/compressor/