Ho provato anche con questo codice che ho trovato ma nulla..... possibile non riesco a mandare il refresh al popup dalla finestra madre?!

codice:
<input type='button' id='btnOpen' value='Open Child'>
<input type='button' id='btnClose' value='Close Child'>
<input type='button' id='btnRefresh' value='Refresh Child'>
...
(function() {
  var childWindow;

  document.getElementById('btnOpen').onclick = openChildWindow;
  document.getElementById('btnClose').onclick = closeChildWindow;
  document.getElementById('btnRefresh').onclick = refreshChildWindow;

  function openChildWindow() {
    if (childWindow) {
      alert("We already have one open.");
    }
    else {
      childWindow = window.open('http://jsbin.com/awiri4');
    }
  }

  function closeChildWindow() {
    if (!childWindow) {
      alert("There is no child window open.");
    }
    else {
      childWindow.close();
      childWindow = undefined;
    }
  }

  function refreshChildWindow() {
    if (!childWindow) {
      alert("There is no child window open.");
    }
    else {
      childWindow.location.reload();
    }
  }
})();