title: What's default DTD if not mentioned in doctype declaration?
body: <p>In my page, the doctype is declared as:</p>
  
  <pre><code>&lt;!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"&gt;
  </code></pre>
  
  <p>no DTD is explicitly specified.
  I wonder in IE which DTD will be defaulted?</p>
  
  <p>seems it does not behave the same as</p>
  
  <pre><code>"http://www.w3.org/TR/html4/loose.dtd"
  </code></pre>
  
  <p>since my table in the page was broken after I added the loose.dtd.
  Can anyone help explain this?
  Thanks!</p>