[en]
235s 237p

find these in the left top of index page, for example:
<a href="de/index.html">[de]</a>
<a href="index.html">[en]</a>
<a href="fr/index.html">[fr]</a>
<a href="hu/index.html">[hu]</a>

[fr]
235s 237p
translated version available but not linked to!

la page d'index, par exemple :
<a href="../de/index.html">[de]</a>
<a href="../index.html">[en]</a>
<a href="../fr/index.html">[fr]</a>
<a href="../hu/index.html">[hu]</a>