function setBookmark( CurrentElement ) {
  a = CurrentElement;
  
  if( window.opera) {
    a.rel = 'sidebar';
  } else {
    if ( window.sidebar ) {
      window.sidebar.addPanel( document.title, a.title, '');
    } else if ( window.external ) {
      window.external.AddFavorite( a.title, document.title );
    } else {
      alert( 'You need to press Command/Cmd/CTRL + D to bookmark "' + document.title + '".' );
    }
  }

  alert(window.external);

}