This is an add-on to the Syntax Highlighter Evolved WP plugin provided by Viper007Bond & Automattic.  Which is a modified version, to fit WP of course, of the SyntaxHighlighter JavaScript package by Alex Gorbatchev.  This plugin adds the LSL, Linden Scripting Language, language to the available languages.

The plugins current version is 1.0.0 and the original javascript code was provided by sabro and was downloaded from undermyhat.org. I simply put it into a WP plugin.

Get the plugin here.