config-xml-js

Config.js - a JavaScript cofiguration library

Config.js allows developers to configure their applications in an XML block
instead of hard-coding values inside their scripts or in JSON objects. The
XML can be embedded inside an HTML document or in a separate XML file. The
configuration block may contain strings, numbers, arrays and HTML.
Furthermore, variables can be inserted into these values, allowing
developers to use the XML block as a simple templating system for their
applications.

More information is available at:

http://www.useragentman.com/blog/config-js-%E2%80%93-a-javascript-cofiguration-library/