title: modalpopupextender always shown and targetcontrolid is not working
body: <p>I have a repeater and it has a column of linkbuttons in it. I want to add those linkbuttons to <code>targetcontrolid</code> but it failed because they are in the <strong>repeater</strong>. So i create an additional invisible button like this :</p>
  
  <pre><code>&lt;asp:Button ID="btnFakePopUp" runat="server" Text="" visible="false" 
      onclick="btnFakePopUp_Click"/&gt;
  </code></pre>
  
  <p>And in i tried to link the linkbutton to the invisible button in this code :</p>
  
  <pre><code> protected void lbtnPosition_Click(object sender, EventArgs e) {
          btnFakePopUp_Click(sender, e);
      }
  
      protected void btnFakePopUp_Click(object sender, EventArgs e)
      {
          popupJob.Show();
      }
  </code></pre>
  
  <p>And this is my <code>modalpopupextender</code> code (my prefix is asp: so dont get confuse) :</p>
  
  <pre><code> &lt;asp:ModalPopupExtender ID="popupJob" runat="server" PopupControlID="panelPopup" CancelControlID="popupClose" TargetControlID="btnFakePopUp"
      Drag="true" PopupDragHandleControlID="panelPopup"&gt;
  &lt;/asp:ModalPopupExtender&gt;
  &lt;asp:Panel ID="panelPopup" runat="server" BackColor="#ebf0ff" Width="300px"&gt;
  &lt;div&gt;
      test&lt;br /&gt;
      &lt;asp:Button ID="btnSave" runat="server" Text="Save" /&gt;
      &lt;asp:Button ID="btnApply" runat="server" Text="Apply" /&gt;
      &lt;input id="popupClose" type="button" value="Close" /&gt;
  &lt;/div&gt;
  &lt;/asp:Panel&gt;
  </code></pre>
  
  <p>The problems are :
  1. The <code>panelpopup</code> is always shown...(it should be hidden, and only be shown when the user click the link button)
  2. Nothing happened when i tried to click the link button (the <code>panelpopup</code> should be shown)
  Thank you :D</p>