var moz = (typeof document.implementation != 'undefined') && (typeof document.implementation.createDocument != 'undefined'); 
var ie = (typeof window.ActiveXObject != 'undefined'); 
if (moz) 
{ 
   var xmlDoc = document.implementation.createDocument("", "", null);
   xmlDoc.async = false; 
} 
else if (ie) 
{ 
   var xmlDoc = new ActiveXObject("Microsoft.XMLDOM"); 
   xmlDoc.async = false; 
   while(xmlDoc.readyState != 4) {}; 
} 
 
function loadXML(xmlFile)
{
  xmlDoc.load(xmlFile);
}