codice:
  <html>

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

        function apriFinestra( __href, __width, __height )
        {
          var _xPos = (screen.width  - __width)  / 2;
          var _yPos = (screen.height - __height) / 2;

          var _conf = "width="    + __width + ",height="  + __height +
                      ",left="    + _xPos   + ",top="     + _yPos +
                      ",screenX=" + _xPos   + ",screenY=" + _yPos +
                      ",scrollbars=no,status=no,location=no,toolbar=no"; /* qui NON va a capo */

          return window.open( __href, "_blank", _conf );
        }

      //-->
      </script>
    </head>

    <body>

      


        PRIMO POPUP
      </p>

    </body>

  </html>