title: How to put some html before and after math when rendering using MathJax
body: <p>I am using MathJax 1.1 in my web site. I need to place some html before and after every math encountered by the processor (tex2jax in my case).</p>
  
  <p>How can I do this?</p>
  
  <ul>
  <li><p>Should I register a callback?</p></li>
  <li><p>Should I use some options in configuration?</p></li>
  </ul>