title: juice:dialog gives "Unrecognized tag prefix or device filter"
body: <p>I'm trying to get the modal dialog to work. I'm using JuiceUI in a Web Form.
  In my master page's head, I have this code:</p>
  
  <pre><code>&lt;script src="../Scripts/jquery-2.0.3.js" type="text/javascript"&gt;&lt;/script&gt;
  &lt;script src="../Scripts/jquery-ui-1.10.3.js" type="text/javascript"&gt;&lt;/script&gt;
  &lt;title&gt;&lt;/title&gt;
  </code></pre>
  
  <p>In the content of the aspx page linked to the master page, I have this div</p>
  
  <pre><code>&lt;asp:Content ID="Content3" ContentPlaceHolderID="cphBody" runat="server"&gt;
  &lt;div id="_Default" class="basic-dialog" title="Basic dialog" runat="server"&gt;
  &lt;p&gt;This is the default dialog which is useful for displaying information.&lt;/p&gt;
  &lt;/div&gt;
  &lt;juice:dialog TargetControlID="_Default" AutoOpen="false" runat="server" /&gt;
  &lt;/asp:Content&gt;
  </code></pre>
  
  <p>It seems like I'm missing something to get the juice:dialog working.</p>
  
  <p>Any idea?</p>