title: Events are not fired from nested Accordion control
body: <p>Suppose we have Accordion control with several buttons placed in other Accordion control. Issue is in the fact that those button's events are not handled on server side. Example: </p>
  
  <p>I have following code:</p>
  
  <pre><code>&lt;form runat="server"&gt;
  &lt;ajax:ToolkitScriptManager ID="ToolkitScriptManager1" runat="server"&gt;
  &lt;/ajax:ToolkitScriptManager&gt;
  &lt;ajax:Accordion ID="Accordion1" runat="server" Enabled="True" Visible="true"&gt;
      &lt;Panes&gt;
          &lt;ajax:AccordionPane ID="AccordionPane1" runat="server"&gt;
              &lt;Header&gt;
                  header1 &lt;asp:button id="ButtonH" runat="server" text="ButtonH" onclick="Button1_OnClick" /&gt;
              &lt;/Header&gt;
              &lt;Content&gt;
                  &lt;ajax:Accordion ID="Accordion12" runat="server" Enabled="True"&gt;
                      &lt;Panes&gt;
                          &lt;ajax:AccordionPane ID="AccordionPane12" runat="server"&gt;
                              &lt;Header&gt;
                                  header2 
                                  &lt;asp:button id="ButtonH2" runat="server" text="ButtonH2" onclick="Button1_OnClick" /&gt;
                              &lt;/Header&gt;
                              &lt;Content&gt;
                                  &lt;asp:button id="ButtonContent" runat="server" text="Content" onclick="Button1_OnClick" /&gt;
                                  content1&lt;/Content&gt;
                          &lt;/ajax:AccordionPane&gt;
                      &lt;/Panes&gt;
                  &lt;/ajax:Accordion&gt;
              &lt;/Content&gt;
          &lt;/ajax:AccordionPane&gt;
      &lt;/Panes&gt;
  &lt;/ajax:Accordion&gt;
  &lt;/form&gt;
  </code></pre>
  
  <p>Codebehind:</p>
  
  <pre><code> protected void Button1_OnClick(object sender, EventArgs e)
   {
      var button = (Button)sender;
   }
  </code></pre>
  
  <p><code>Button1_OnClick</code> method is executed only on <code>ButtonH</code> click but not on <code>ButtonH2</code> nor <code>ButtonContent</code>clicks. Does anybody have any ideas what I miss?</p>
  
  <p>Thanks!</p>