function openNewWindow (url, width, height, name) {
  if (url == '') {
    return false;
  }
  defOptions = 'scrollbars,resizable';
  if (width == 0) {
    width = 400;
  }
  if (height == 0) {
    height = 600;
  }
  options = defOptions + ',width=' + width + ',height=' + height;
  wid = window.open (url, name, options);
  return false;
}