title: jquery replace all <ol> with <ul>
body: <p>Given the following dom structure I would like to transform an ordered list to an unordered list.</p>
  
  <pre><code>&lt;div class="wrapper"&gt; 
    &lt;ol&gt;
      &lt;li&gt;&lt;div&gt;foo&lt;/div&gt;&lt;/li&gt;
      &lt;ol&gt;
        &lt;li&gt;&lt;div&gt;bar&lt;/div&gt;&lt;/li&gt;
      &lt;/ol&gt;
      &lt;li&gt;&lt;div&gt;batz&lt;/div&gt;&lt;/li&gt;
    &lt;/ol&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>What is the best way to do this?</p>