jquery wrap element around a lot of elements
<p>I have following html and want to wrap with javascript or jquery a div around all li's (its not definied how many li's there are)</p>

<pre><code>&lt;div class='example1'&gt;
  &lt;div class='example2'&gt;
  &lt;h1&gt;Test&lt;/h1&gt;
  &lt;div class='example3'&gt;
  &lt;li&gt;&lt;/li&gt;
  &lt;li&gt;&lt;/li&gt;
  ...
  &lt;li&gt;&lt;/li&gt;
  &lt;li&gt;&lt;/li&gt; 
&lt;/div&gt;
</code></pre>

<p>The Result should look like</p>

<pre><code>&lt;div class='example1'&gt;
  &lt;div class='example2'&gt;
  &lt;h1&gt;Test&lt;/h1&gt;
  &lt;div class='example3'&gt;
  &lt;div class='lis'&gt;
    &lt;li&gt;&lt;/li&gt;
    &lt;li&gt;&lt;/li&gt;
    ...
    &lt;li&gt;&lt;/li&gt;
    &lt;li&gt;&lt;/li&gt;
  &lt;/div&gt;    
&lt;/div&gt;
</code></pre>

<p>I'm not able to add anything else the existing html :(</p>

<p>Can you please help me?</p>
