Project to build an open source implementation of the ActionScript 3 language, which is based upon and extends ECMAScript 3rd edition (ES3). Provides a description, roadmap and the project's members list.
Javascript language bindings. It allows Javascript objects to transparently access and manipulate XPCOM objects and also enables Javascript objects to implement XPCOM compliant interfaces.
Detailed article with online tool on using CSS1 from JavaScript in a way compatible with Navgator 4, Netscape 6, Mozilla, and Internet Explorer 4. From mozilla.org.