ASP.net Button Server Side click not firing
<p>I have a ASP.net button btnAccept in a panel control which will be shown on Click of Another button in a modalViewextender control.</p>

<p>The btnAccept control onclick is not firing. But if I put onClientClick it is firing. But I want to work onClick at the server end. I am not getting any errors and I am not able to figure this out.</p>

<p>Any help will be greatly appreciated.</p>

<p>Below is the code for the button</p>

<pre><code>&lt;cc1:ModalPopupExtender ID="mdldigiSign" runat="server" Enabled="True" 
    BackgroundCssClass="modalBackground" TargetControlID="pnlSign" 
    PopupControlID="pnlSign" CancelControlID="lblCloseSign"
    OnCancelScript="hideDigiSignDialog();" DynamicServicePath=""&gt;
&lt;/cc1:ModalPopupExtender&gt;
&lt;asp:Panel ID="pnlSign" runat="server"&gt;
    &lt;table border="0" class="SubMenu" align=center &gt;
        &lt;tr&gt;
            &lt;td align="right" valign="top" style="height: 30px"&gt;
                &lt;label id="lblCloseSign" runat="server" title="Close"&gt;
                    &lt;a href="#"&gt;
                        &lt;img src="images/close_button.gif" border="0" 
                                alt="Close" /&gt;
                    &lt;/a&gt;
                &lt;/label&gt;
            &lt;/td&gt;
        &lt;/tr&gt;
        &lt;tr&gt;&lt;td&gt;Respondent's Signature&lt;/td&gt;&lt;/tr&gt;
        &lt;tr&gt;
            &lt;td align=center &gt;
                &lt;OBJECT id=esCapture1 
                    classid=clsid:84C046A7-4370-4D91-8737-87C12F4C63C5 
                    width="150" height="80" codebase="websignax.cab" VIEWASTEXT&gt;
                    &lt;param name="useslibrary" value="websignAx"&gt;
                    &lt;param name="useslibrarycodebase" value="websignax.cab"&gt;
                    &lt;param name="useslibraryversion" 
                        value="7,1,0,1"&gt;IntegriSign Signature Control
                &lt;/OBJECT&gt;
                &lt;br /&gt;
                &lt;br /&gt;
                &lt;INPUT onclick=signNow() type=button value="StartSign" 
                    name=B1 id=B1&gt;
                &amp;nbsp;&amp;nbsp;
                &lt;input type="button" value="GetData" name="B2" 
                    onclick=getData()&gt;
                &lt;br /&gt;
                &lt;asp:HiddenField ID="hdsignature" runat=server /&gt;
            &lt;/td&gt;
        &lt;/tr&gt;
        &lt;tr&gt;
            &lt;td  align="center"&gt;
                &lt;asp:Button ID="btnAccept" runat="server" 
                    Text="Accept Settlement"  /&gt; 
            &lt;/td&gt;
        &lt;/tr&gt;
    &lt;/table&gt;
&lt;/asp:Panel&gt;
</code></pre>

<p>Thanks</p>
