function OAvtorju ()
{
  var w = screen.width;
  var h = screen.height;
  var ow = 300;
  var oh = 300;
  var ol = parseInt((w-ow-10)/2);
  var ot =  parseInt((h-oh-40)/2);
  if (ot < 0){ ot = 0; }

  var HTMLPopUp = window.open ('OAvtorjih.html', 'Avtorji', 'width='+ow+',height='+oh+',left='+ol+',top='+ot)
}