title: How do I get a reference to "Microsoft.Web.Preview" to resolve?
body: <p>I'm trying to include a validator on a form launched by the ModalPopupExtender control found in the AJAX toolkit.  This is an ASP.Net 2.0 web application.</p>
  
  <p>Several articles that show how to do this, include this reference:</p>
  
  <pre><code>&lt;asp:ScriptReference Assembly="Microsoft.Web.Preview"Name="PreviewScript.js" /&gt;
  </code></pre>
  
  <p>This is the article I've based my page on for testing.  <a href="http://usefulaspnet.blogspot.com/2007/03/modal-popup-with-textbox-and-validator.html" rel="nofollow">http://usefulaspnet.blogspot.com/2007/03/modal-popup-with-textbox-and-validator.html</a></p>
  
  <p>The problem I'm running into is that the file cannot be found when the page tryies to open.</p>
  
  <ol>
  <li>Is there a better way to do what I want</li>
  <li>Where can I find this file?</li>
  </ol>