JavaScript - Get Raw HTML from XML

I have an XML document that res开发者_开发问答embles -

<Results>
  <Data>
    <div id = 'id_div1'>
     <b>Hello World!</b>
    </div>
  </Data>
</Results>

Knowing that my HTML is contained within the 'Data' element, using JavaScript how can I get

<div id = 'id_div1'><b>Hello World!</b></div> ?

---

-snip-

Edit

it's a lot simpler than all this...

xmlDoc=loadXMLDoc("myxml.xml");
var html = xmlDoc.getElementsByTagName("Data")[0].getElementsByTagName("div")[0]
document.body.appendChild(html);