target an element in another one by getElementById
<p>I have two element like this:</p>

<pre><code>&lt;div id="first"&gt;
    &lt;div id="test"&gt;&lt;/div&gt;
&lt;/div&gt;


&lt;div id="second"&gt;
    &lt;div id="test"&gt;&lt;/div&gt;
&lt;/div&gt;
</code></pre>

<p>then i want to getElementbyId('test'), However I need 'test' in first div.
meanwhile this is an example and my div doesn't have pre-defined order.</p>
