codice:
  <script language="JavaScript" type="text/javascript">
  <!--

    function showImage( __szImagePath )
    {

      var _img = new Image( );
      _img.src = __szImagePath;

      var _wnd = window.open( "", "_blank", "toolbar=no,statusbar=no,menubar=no,resizable=yes" +
                                            ",height=" + _img.height +
                                            ",width=" + _img.width );

      _wnd.document.open( "text/html" );

      _wnd.document.writeln( "<html><body topmargin=\"0\" leftmargin=\"0\" marginheight=\"0\" marginwidth=\"0\">" );
      _wnd.document.writeln( "<img src=\"" + __szImagePath + "\">" );
      _wnd.document.writeln( "</body></html>" );

      _wnd.document.close( );
      _wnd.focus( );

    }

    showImage( 'http://www.evsc.k12.in.us/schoolzone/schools/caze/smile.gif' );

  //-->
  </script>