title: HTML5 sessionStorage and XMLDocument
body: <p>I want to store an XML document in <code>sessionStorage</code>. When I do this it seems to save ok as an <code>XMLDocument</code>.  When I try to access it (on a page refresh) the object comes back as <code>[object Object]</code> as opposed to <code>[object XMLDocument]</code>.</p>
  
  <p>How do I get the data out of <code>sessionStorage</code> as an <code>XMLDocument</code> (or convert it to one?)</p>