title: ASP.NET submit button RequiredFieldValidator not firing with Facebox
body: <p>I was trying to create a popup logon form for a site I'm working on so I decided to give facebox a try.  The logon pops up ok, but the submit button and required validators are not firing.  This is within the master page and is contained with a Progress Panel.</p>
  
  <p>In the page header, I have:</p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
      $(document).ready(function () {
          $('a[rel*=facebox]').facebox();
      });
  &lt;/script&gt;
  </code></pre>
  
  <p>Towards the top of the form, I have this link:</p>
  
  <pre><code>&lt;a href="#logon_form" rel="facebox"&gt;Logon&lt;/a&gt;
  </code></pre>
  
  <p>Which is to open the layer listed below:</p>
  
  <pre><code>&lt;div id="logon_form" style="display:none;"&gt;
      &lt;table cellpadding="3" cellspacing="0" border="0" class="centered"&gt;
          &lt;tr&gt;
              &lt;td&gt;Email:&lt;/td&gt;
              &lt;td&gt;&lt;asp:TextBox ID="TextLogonEmail" runat="server" CssClass="inputtext" ValidationGroup="LogonGroup" Columns="35" MaxLength="320"&gt;&lt;/asp:TextBox&gt;&lt;/td&gt;
              &lt;td&gt;&lt;asp:RequiredFieldValidator ID="RequiredLogonEmail" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="TextLogonEmail" ValidationGroup="LogonGroup" CssClass="error"&gt;required&lt;/asp:RequiredFieldValidator&gt;&lt;/td&gt;
          &lt;/tr&gt;
          &lt;tr&gt;
              &lt;td&gt;Password:&lt;/td&gt;
              &lt;td&gt;&lt;asp:TextBox ID="TextLogonPassword" runat="server" CssClass="inputtext" TextMode="Password" ValidationGroup="LogonGroup" Columns="35" MaxLength="40"&gt;&lt;/asp:TextBox&gt;&lt;/td&gt;
              &lt;td&gt;&lt;asp:RequiredFieldValidator ID="RequiredLogonPassword" runat="server" ErrorMessage="RequiredFieldValidator" ControlToValidate="TextLogonPassword" ValidationGroup="LogonGroup" CssClass="error"&gt;required&lt;/asp:RequiredFieldValidator&gt;&lt;/td&gt;
          &lt;/tr&gt;
          &lt;tr&gt;
              &lt;td&gt;&amp;nbsp;&lt;/td&gt;
              &lt;td colspan="2"&gt;&lt;asp:Button ID="ButtonLogon" runat="server" Text="Logon" ValidationGroup="LogonGroup" onclick="ButtonLogon_Click" /&gt;&lt;/td&gt;
          &lt;/tr&gt;
      &lt;/table&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>Any ideas?</p>