function swapImage(img_name, img_title) {
 if (document.getElementById) {
  document.getElementById('IMG1_cz').src = img_name;
  document.getElementById('IMG1_cz').title = img_title;
  document.getElementById('IMG1_en').src = img_name;
  document.getElementById('IMG1_en').title = img_title;
  document.getElementById('IMG1_pl').src = img_name;
  document.getElementById('IMG1_pl').title = img_title;
  document.getElementById('IMG1_de').src = img_name;
  document.getElementById('IMG1_de').title = img_title;
  document.getElementById('IMG1_hr').src = img_name;
  document.getElementById('IMG1_hr').title = img_title;
  document.getElementById('IMG1_ru').src = img_name;
  document.getElementById('IMG1_ru').title = img_title;
  return(false);
 }
}