JAS Carousel, coded in JavaScript, is published under the Eclipse Public License and therefore OSI Certified Open Source Software. This FAQ contains more information on this particular license.
We use SourceForge to host our code. So. . . .
Visit http://sourceforge.net/projects/jasca/files/ to browse the downloadable zip files.
Visit http://sourceforge.net/p/jasca/code/ to peruse the Subversion repository.