How to change only text node in element
<p>I have next html:</p>

<pre><code>&lt;label for="user_name"&gt;
  &lt;abbr title="required"&gt;*&lt;/abbr&gt;
  Name
&lt;/label&gt;
</code></pre>

<p>And I want to change label caption to <code>Title</code> with jquery. So I do</p>

<pre><code>$('label[for=user_name]').html('Title')
</code></pre>

<p>And it replace all inner html (with <code>abbr</code> tag)</p>

<p>So, what the easiest way to replace only <code>Name</code>?</p>
