title: W3C HTML5 validator error: An body start tag seen but an element of the same type was already open
body: <p>I post this question because I'm having some errors with the w3c validator in my page (<a href="http://validator.w3.org/check?uri=http://infoserver29200.gaming.multiplay.co.uk/tumae/&amp;charset=%28detect%20automatically%29&amp;doctype=HTML5&amp;group=0&amp;user-agent=W3C_Validator/1.3%20http://validator.w3.org/services" rel="nofollow" title="Link to validation">Link to validation</a>).</p>
  
  <p>It outputs me a lot of strange errors related with my HTML 5 markup, being this the main error I can't get out of my head:</p>
  
  <blockquote>
    <p>Line 15, Column 6: An body start tag seen but an element of the same type was already open</p>
  </blockquote>
  
  <p>I have looked a lot into this problem and I'm not able to find any solutions.</p>
  
  <p>Although there are more strange errors, such as </p>
  
  <blockquote>
    <p>Line 14, Column 7: Stray end tag head</p>
  </blockquote>
  
  <p>I'm specially interested in the first exposed one, which I would like you to help me solving this.</p>
  
  <p>Thanks in advance!</p>
  
  <p><strong>Problem solved:</strong><br>
  <em>Conclusions</em>:  </p>
  
  <ol>
  <li>Never display data into the <code>&lt;head&gt;</code> tag, otherwise, a body tag will be automatically opened.</li>
  <li>The <code>&lt;noscript&gt;</code> tag content is considered by the validator as displayable, so It's convenient to take care of what we write into the tag.</li>
  </ol>