title: WordPress JS errors in Post section after upgrade to 3.5.1
body: <p>After upgrading to WordPress Version 3.5.1, I am getting a few JS errors and hence not able to use some basic WP features in the admin panel.</p>
  
  <p>E.g. On post edit page I am not able to switch the editor to html mode, not able to click on any link (Edit), tabs, etc.</p>
  
  <p>Please suggest what action should be taken or is it a WordPress upgrade issue? Did a reinstall but no change.</p>
  
  <p>The errors I noticed in firebug console are as follows . . . .</p>
  
  <pre><code>TypeError: e is undefined
  
  TypeError: $(...).pointer is not a function $(’.insert-media’).pointer( options ).pointer(‘open’);
  
  TypeError: switchEditors is undefined switchEditors.switchto(this);
  </code></pre>