title: scrollbar for modalpopup extender
body: <p>I have following modal popup extender:</p>
  
  <pre><code>&lt;asp:Label ID="lbl" runat="server"&gt;&lt;/asp:Label&gt;
  
  
                                          &lt;asp:ModalPopupExtender ID="ModalPopupExtender1" runat="server" TargetControlID="lbl"
                                              PopupControlID="PnlUpdate" BackgroundCssClass="modalBackground"  &gt;
                                          &lt;/asp:ModalPopupExtender&gt;
  
                                          &lt;asp:Panel ID="PnlUpdate" runat="server" Width="500px" CssClass="popup" Height="500px" &gt;
                                              &lt;asp:UpdatePanel ID="UpnlModal" runat="server" UpdateMode="Conditional"&gt;
                                                  &lt;ContentTemplate&gt;
                                                      &lt;table width="100%"&gt;
                                                          &lt;tr&gt;
                                                              &lt;td align="right"&gt;
                                                                  &lt;table width="100%" align="center"&gt;
                                                                      &lt;tr&gt;
                                                                          &lt;td class="Heading" align="center"&gt;
                                                                              &lt;asp:Label ID="lblHeading" runat="server"&gt;&lt;/asp:Label&gt;
                                                                          &lt;/td&gt;
                                                                      &lt;/tr&gt;
                                                                  &lt;/table&gt;
                                                                  &lt;table align="center" width="70%"&gt;
                                                                      &lt;tr&gt;
                                                                          &lt;td align="right" class="NormalText"&gt;
                                                                              &lt;asp:DataList ID="dlMovies" runat="server" RepeatDirection="Horizontal" RepeatColumns="1"
                                                                                  Width="100%"&gt;
                                                                                  &lt;ItemTemplate&gt;
                                                                                      &lt;table align="center" width="70%"&gt;
                                                                                          &lt;tr&gt;
                                                                                              &lt;td align="left"&gt;
                                                                                                  &lt;asp:Label ID="lblMovieName" runat="server"&gt;&lt;/asp:Label&gt;
                                                                                              &lt;/td&gt;
                                                                                          &lt;/tr&gt;
                                                                                      &lt;/table&gt;
                                                                                  &lt;/ItemTemplate&gt;
                                                                              &lt;/asp:DataList&gt;
                                                                          &lt;/td&gt;
                                                                      &lt;/tr&gt;
                                                                  &lt;/table&gt;
                                                              &lt;/td&gt;
                                                          &lt;/tr&gt;
                                                      &lt;/table&gt;
                                                  &lt;/ContentTemplate&gt;
                                              &lt;/asp:UpdatePanel&gt;
                                          &lt;/asp:Panel&gt;
  </code></pre>
  
  <p>I want to have scollbar for it.</p>
  
  <p>I refered <a href="https://stackoverflow.com/questions/1894311/how-can-i-make-the-modal-popup-scroll-its-contents-with-the-page">How can I make the modal popup scroll its contents with the page?</a> and made css like:</p>
  
  <pre><code>.modalBackground 
  {
      overflow : auto ;
      background-color:Black ;
      filter:alpha(opacity=65);
      -moz-opacity:0.65;                     
      Opacity:0.65; 
  }
  </code></pre>
  
  <p>but still scrollbar is not comming, (I have also mentioned Height="500px" for panel.</p>
  
  <p>Please help me.</p>