function openUserNode(url, w, h) {
  var options = "width=" + w + ",height=" + h + ",";
  options += "resizable=no,scrollbars=yes,status=no,";
  options += "menubar=no,toolbar=no,location=no,directories=no";
  var WinUserNode = window.open(url, 'WinUserNode', options);
  WinUserNode.focus();
}