title: Wrap some specified words with span in jQuery?
body: <p>I'd like to know the most convenient way to wrap some specified words with span-tags.</p>
  
  <p>Example:
  I have a word, which is dog. Here's the original text:</p>
  
  <pre><code>I have a dog, do you have a dog?
  </code></pre>
  
  <p>And output should be like this:</p>
  
  <pre><code>I have a &lt;span class="highlight"&gt;dog&lt;/span&gt;, do you have a &lt;span class="highlight"&gt;dog&lt;/span&gt;?
  </code></pre>
  
  <p>Any help?</p>
  
  <p><strong>EDIT:</strong>
  Note, that it should also wrap words, even if they are not invidual (Peter-dog). Hope you got it.</p>