This is the official Mathematica and Wolfram Language code highlighter for Mathematica.stackexchange.com and the Wolfram Community.
To use it with your installation of google-code-prettify, you have to
add the files from the build folder into your code-pretty installation. The file lang-mma.js needs to go into
the google-code-prettify/src folder and the prettify-mma.css needs to go into the styles folder. The difference between the build and the src folder is that the build folder contains the minimized js-files from the src folder. All other information
can be found in the google-code-prettify wiki.
Note that I also compiled a Joomla extension which lets you easily install the whole highlighting engine on your Joomla based website.
The src folder contains another file: mathematica-source-highlighter.user.js which is a browser userscript that was used
to test the highlighter before it was officially installed at Stack Exchange.
The JavaScript can be opened with Google Chrome and is then installed as a local extension.
When you browse pages under http://stackoverflow.com/questions/ and have Mathematica code posted
on the page its style is replaced and you should see nice code highlighting.
This user-script was written by Tim Stone and I only added the rules for the lexical scanner and colors which go along with the page colors of StackOverflow.