function popup( mylink, windowname ) {
  if( ! window.focus )
    return true;
  var href;
  if( typeof( mylink ) == 'string') {
    href = mylink;
  } else {
    href = mylink.href;
  }

  window.open( href, windowname, "width=400,height=400,scrollbars=yes" );
  return false;
}