function zwijanie(dane)
{

 if (document.getElementById) {
    if (document.getElementById(dane).style.display=='none') {
       document.getElementById(dane).style.display = '';
       setCookie(dane, '1');
    } else {
           document.getElementById(dane).style.display = 'none';
           setCookie(dane, '0');
    }
 }
 else {
      if (document.all[dane].style.display=='none') {
         document.all[dane].style.display='';
         setCookie(dane, '1');
      } else {
             document.all[dane].style.display = 'none';
             setCookie(dane, '0');
      }
 }
}

function jezyk(choice) {
dzisiaj = new Date().getTime();
now = new Date(dzisiaj + 24 * 60 * 60 * 1000 * 30);

location="index.php?lang="+choice;

setCookie ("jezyk", choice, now);

}