Help with Phrasing xml with JavaScript

[Yikes]

Hello!
I've got the following code from the w3 school website for phrasing my xml and xsl. It is inside the Head tag of the HTML doc. (not an external linked file)

<script type="text/javascript">
function loadXMLDoc(fname)
{
var xmlDoc;
// code for IE
if (window.ActiveXObject)
{
xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
}
// code for Mozilla, Firefox, Opera, etc.
else if (document.implementation && document.implementation.createDocument)
{
xmlDoc=document.implementation.createDocument("","",null);
}
else
{
alert('Your browser cannot handle this script');
}
xmlDoc.async=false;
xmlDoc.load(fname);
return(xmlDoc);
}

function displayResult()
{
xml=loadXMLDoc("JobNumbers.xml");
xsl=loadXMLDoc("joblist.xsl");
// code for IE
if (window.ActiveXObject)
{
ex=xml.transformNode(xsl);
document.getElementById("example").innerHTML=ex;
}
// code for Mozilla, Firefox, Opera, etc.
else if (document.implementation && document.implementation.createDocument)
{
xsltProcessor=new XSLTProcessor();
xsltProcessor.importStylesheet(xsl);
resultDocument = xsltProcessor.transformToFragment(xml,document);
document.getElementById("example").appendChild(resultDocument);
}
}
</script>

The above script works fine, but when I want to point the links to the same files in a different directory, it doesn't work.

EG

xml=loadXMLDoc("../xml/JobNumbers.xml");
xsl=loadXMLDoc("../xml/joblist.xsl");

I'm sure I've got the right relative path from the HTML file. Absolute links don't work either

xml=loadXMLDoc("/site/xml/JobNumbers.xml");
xsl=loadXMLDoc("/site/xml/joblist.xsl");

Anyone got any ideas? Thanks very much.