How to use this plugin
1. enable corresponding language in the plugin settings.
2. place any code within preformatted HTML element "<pre> ... </pre>"
3. add specially formatted class attribute with a brush alias to enable syntax highlighting for a selected language, ie <pre class="brush: js">. Full list of supported brushes is available at the following URL: http://alexgorbatchev.com/SyntaxHighlighter/manual/brushes/
If you use JCE you can add custom styles to Styles List which is found under Profiles => Profile name (ie Default) => Editor Parameters => Typography. Here is an example of the list I use on this site:
brush_sql = "brush: sql", brush_php = "brush: php", brush_xml = "brush: xml", brush_txt = "brush: text"
Make sure to select pre Element when applying a style in the JCE editor