XML in XHTML

I am trying to include and xml document inside my xhtml document. There
are a number of reasons for this including portability, multiple
interface generation, and scalability of information.
My problem is that javascript is understanding the nodes in my xml
document as html elements.

<xml>
  <book>
    <title>Lord of the Rings</title>
  </book>
</xml>

If I parse this, the title element cannot be extracted and the page
title(in the browser) becomes "Lord of the Rings".
Is there a way to exclude this xml node from the xhtml rules?
Received on Sat Dec 3 04:34:02 2005