title: get text content of first HTML tag
body: <p>I need to get just text of html tag Div where <code>(id = 'div12Item')</code> that is <code>(new content )</code>
  below is my html code </p>
  
  <pre><code>&lt;div name="div12Item" id="div12Item"&gt;
  
                  new content            
                &lt;ul id="sortable" &gt; 
  
                  &lt;li &gt;&lt;/span&gt;Item 1&lt;/li&gt; 
                  &lt;li &gt;&lt;/span&gt;Item 2&lt;/li&gt; 
                  &lt;li &gt;&lt;/span&gt;Item 3&lt;/li&gt; 
  
              &lt;/ul&gt; 
             &lt;/div&gt;
  </code></pre>
  
  <p>when I execute this javascript code         <code>alert(document.getElementById('div12Item').textContent);</code>
   I get new content Item 1 Item2 Item3 </p>
  
  <p>but me I need just get text in div even if in HTML tag Div there is other HTML tags like my example </p>