Basically it uses the "Template Changer" method, posted by "Paul" (pbflash) at Open-Realty® forum with some additions - Paul owns all credits. Thanks Paul, for the best tip ever! Thanks Ryan Bonham and Mick, for the best software ever!
Gregor and Eduardo were receiving daily, several emails asking for help about a Multilingual site - so they decided to offer this unofficial PATCH until the release of Open-Realty® v.3 with Full Multilingual Support - when this version will be descontinued - till there, this version will be updated with bug fixes and features implemented like the official versions of O-R.
This version was first released at January/03,2007 with four languages. Actually has the following languages: Dutch, English, French, German, Greek, Italian, Lithuanian, Portuguese (Portugal), Russian, Spanish (Spain) and Turkish. Please feel free to help adding new languages, posting at the forum the necessary files.
Open-Realty® is a professional, open-source, web-based real estate listing management system written in PHP that is provided FREE by Transparent Technologies, Inc. Designed to be flexible, powerful, easy to install and maintain, Open-Realty® has powered thousands of real estate web sites worldwide. Open-Realty® is a mature application that is actively developed, and has been community supported since 2003.
Built-in photo management -- upload photos via a web browser. If photos are not uploaded for a property listing, a default "photo not available" image will be automatically displayed.