Support for multilanguage sites, Internationalization (I18N)

[xxdex]

try in template:
<a href="<?php get_site_url(); ?>de">DE</a>
slug in settings should look like that:
%nondefaultlanguage%/%parent%/%slug%/

nondefaultlanguage is not giving a lang in http://www.yourpage.com/sitename
and giving a lang in other lang ttp://www.yourpage.com/de/sitename

i'm using a Use Fancy URLs
and my .htacces look like:

PHP Code:

AddDefaultCharset UTF-8
Options -Indexes

# blocks direct access to the XML files - they hold all the data!
<Files ~ "\.xml$">
    Order allow,deny
    Deny from all
    Satisfy All
</Files>
<Files sitemap.xml>
        Order allow,deny
    Allow from all
    Satisfy All
</Files>

RewriteEngine on

# Usually it RewriteBase is just '/', but 
# replace it with your subdirectory path
RewriteBase /

RewriteRule ^(cz|du|en|fr)/(.*?/)?([A-Za-z0-9-]+)/?$ index.php?id=$3&lang=$1 [QSA,L]
RewriteRule ^(cz|du|en|fr)/?$ index.php?lang=$1 [QSA,L]

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule /?([A-Za-z0-9_-]+)/?$ index.php?id=$1 [QSA,L] 


where the line
RewriteRule ^(cz|du|en|fr)/(.*?/)?([A-Za-z0-9-]+)/?$ index.php?id=$3&lang=$1 [QSA,L]
RewriteRule ^(cz|du|en|fr)/?$ index.php?lang=$1 [QSA,L]

is giving me a installed language cz|du| and other..