xisting container, so that the form is not rerendered on every popup
        { reuse: true }
      );
    });
  }
}

window.app = new SampleApp();
</script>
</head>
<body style="padding:15px 30px;">
  <input type="button" onclick="app.showPopupForm();" value="Show Popup" />
  <div style='display:none;'>
    <div class='sample_cust_form_container xdialogbox' style='width:400px;'></div>
  </div>
</body>
</html>