Indonesian Mozilla is still being worked on.
Mozilla M12 has been translated into Indonesian.
Download the full Indonesian Mozilla Win32 M12 version (5.5 MB) here.
Download only the Indonesian Language Pack (0.2 MB) here if you already have the Mozilla Win32 M12 binaries.
About the translation:
Albert Sutojo and Endro Koesno translated all the English phrases into Indonesian. They also reviewed in the final product for consistency.
Daniel Howard coordinated the translation and handled technical matters to accommodate the translation, including writing a Perl script to implement the translation, changing Mozilla source code and coordinating with the Mozilla community. He also created and maintains this web page.