if (app.viewerVersion < 9.0)
    {
       if (app.alert(ADBE.Reader_string_Need_New_Version_Msg, 1, 1) == 1)
          this.getURL(ADBE.Reader_Value_New_Version_URL + ADBE.SYSINFO, false);
       ADBE.Reader_Value_Asked = true;
    }