var NODE_PARSER = NR.S, HOST = NR.__HOST; 
function parseXML(data){ 
var xml, docElement; 
if (HOST.DOMParser) { 
xml = (new DOMParser()).parseFromString(data, "text/xml"); 
} 
 else { 
xml = new ActiveXObject("Microsoft.XMLDOM"); 
xml.async = "false"; 
xml.loadXML(data); 
} 
docElement = xml.documentElement; 
if (!docElement || !docElement.nodeName || docElement.nodeName === "parsererror") { 
NR.error("Invalid XML: " + data); 
} 
return xml; 
} 
; 
function makeXML(xml){ 
return NR.isString(xml)? parseXML(xml): xml; 
} 
; 
exports.parse = parseXML; 
exports.find = function (selector, context, first){ 
return NODE_PARSER.find(selector, makeXML(context), first); 
} 
;