<script TYPE="text/javascript">
     languages=new Array("pl", "en", "en-US");
     default_language="en";

     if (navigator.language)
   navigator_language=navigator.language
     else if (navigator.browserLanguage)
   navigator_language=navigator.browserLanguage
     else if (navigator.systemLanguage)
   navigator_language=navigator.systemLanguage
     else if (navigator.userLanguage)
   navigator_language=navigator.userLanguage
     else if (window.navigator.language)
   navigator_language=window.navigator.language
     else
   navigator_language=default_language;
     in_list=-1;
     for (i=0; i<languages.length; i++)
   if (languages[i]==navigator_language)
       in_list=i;
     if (in_list>=0)
   language=navigator_language
     else
   navigator_language=navigator_language.substr(0,2).toLowerCase();
     for (i=0; i<languages.length; i++)
   if (languages[i]==navigator_language)
       in_list=i;
     if (in_list>=0)
   language=navigator_language
     else
   language=default_language;
     open_site="./"+language+"/index.html";
     window.location.replace(open_site);
 </script>