PL/Js is a procedural language for PostgreSQL using Javascript, a popular, light-weight, embeddable scripting language.
The PL/Jsproject is a PostgreSQL Community project that is a part of the pgFoundry.
The pgFoundry page for the project is at http://pgfoundry.org/projects/pljs, where you can find downloads, documentation, bug reports, mailing lists, and a whole lot more.
