function JSL(url, jmeno, w, h)
{
popupWin = window.open(url, jmeno, 'resizable=no,top=20,left=20,menubar=no,toolbar=no,location=no,directories=no,status=no,scrollbars=no,width=' + w + ',height=' + h);
}

function produkt(id){
  if (document.getElementById(id).style.display=='block'){
    document.getElementById('textik'+id).innerHTML='zobrazit';
    document.getElementById(id).style.display='none';
  }else{
    document.getElementById('textik'+id).innerHTML='skrýt';
    document.getElementById(id).style.display='block';
  }
}