function getWindow(code, event) {
  var window = code;

  x = event.clientX;
  y = event.clientY;

  document.getElementById('windowBlock').style.display = 'block';
  document.getElementById('windowBlock').innerHTML = window;
  document.getElementById('window').style.top = document.body.scrollTop + y;
  document.getElementById('window').style.left = document.body.scrollLeft + x - '400';
}

function closeWindow() {
  document.getElementById('window').style.display = 'none';
  document.getElementById('windowBlock').style.display = 'none';
}

function potvrzeni()  {
  pokracovat = confirm("Chcete to opravdu smazat?");
  return pokracovat;
}

function show_coords(event)
{
x=event.clientX;
y=event.clientY;
alert("X coords: " + x + ", Y coords: " + y);
}