function edituj_ie (url) {
  var left = Math.round(screen.availWidth / 2 - 350);
  var top = Math.round(screen.availHeight / 2 - 365);
  window.open(url, 'Editace', 'scrollbars=1,toolbar=0,resizable=1,width=750,height=700,left=' + left + ',top=' + top);
  return false;
}

function smaz_ie (url) {
  if (confirm('Opravdu smazat?')) {
    var left = Math.round(screen.availWidth / 2 - 100);
    var top = Math.round(screen.availHeight / 2 - 50);
    window.open(url, 'Mazani', 'scrollbars=0,toolbar=0,resizable=1,width=200,height=100,left=' + left + ',top=' + top);
  }
  return false;
}