function viewPhoto(theLink,w,h) {
    w += 0; h += 0;
    if (window.open('','photo','top=200, left=180, width='+w+', height='+h+',toolbar=no,scrollbar=no,location=no')) {
    theLink.target = 'photo';
    }
}
function viewLink(theLink) {
    if (window.open('','okno')) {
    theLink.target = 'okno';
    }
}
function viewMenu(menu) {
  stav = document.getElementById(menu).style.display;
  if (stav == "none") {
    document.getElementById(menu).style.display = "block";
  } else {
    document.getElementById(menu).style.display = "none";
  }
}
function hideMenu(menu) {
  document.getElementById(menu).style.display = "none";
}