[jQuery] Javascript question: Get elementid inside an element

[jQuery] Javascript question: Get elementid inside an element

<div>Hey,</div>
<div> </div>
<div>For example take this code:</div>
<div> </div>
<div><div id="001"></div>
<div>
<div>    <div id="0010"></div>
<div>    </div></div>
<div>
<div>    <div id="0011"></div>
<div>    </div></div></div></div>
<div></div></div>
<div> </div>
<div>Now i want to have the InnerHtml of id 0011</div>
<div>one way to do that is: document.getelementbyid('0011');</div>
<div> </div>
<div>But that id COULD be in more places.. (i know it`s not good for id`s.. but in some cases it`s possible)</div>
<div> </div>
<div>So how do i get the id: 0011 without the document thing?</div>
<div>i tried this:</div>
<div> </div>
<div>var test = document.getelementbyid('001');</div>
<div>alert(test.getelementbyid(0011).InnerHtml);</div>
<div> </div>
<div>but that isn`t working.</div>
<div> </div>
<div>I hope someone could help me with this. (above code is not tested)</div>
<div> </div>
<div>Thanx in favor,</div>
<div>Mark</div>