multilanguage site: performance question: included file with cases?

Hello listmembers, I'm building up a site which should be german and english. So I have a site object which remembers this choice during the session and do a include('lang_'.$site->lang.'.php'); in my topmost.php. This works good, but this file is growing and I thought about how to handle this. Two things came in mind: 1. Split the content parts and use a different include file for each section. 2. Do a switch ($site->curMenu) in the lang_xx.php and define only what is needed for current section. The first option is not so good, as I would have up to 10 new files. And when thinking of the second option, I thought that it could be even more performant, if you had a static included file, as this could be cached somehow. So, what to do? And: hello to all, it's my first post here. :) -- shinE! http://www.thequod.de ICQ#152282665 I'm sitting in silence.