Plist parser fails on IE8 when there's no DTD header in XML

I'm trying to parse a XML string (provided from xslt conversion) in IE8. It doesn't contain DTD header, but starts directly with "<?xml version".

First problem I encountered was that Objective-J.js at line 844 removes 6 characters from the start making xml document not a xml document any more, thus I changed it to read:

XMLNode.loadXML(XMLNodeOrData.string);

at this point XMLNode seemed to load my string without any problems, but it dies on the next loop:

while (((String(XMLNode.nodeName)) == XML_DOCUMENT) || ((String(XMLNode.nodeName)) == XML_XML))
    XMLNode = (XMLNode.firstChild);

first node (XMLNode) is XML_DOCUMENT. It's firstChild is XML_XML. But plist is not firstChild of XML_XML but rather nextSibling.

if I set XMLNode to plist node it continues from this point without any problem.

PS: WebKit handles same xml string without any problem (tested on Chrome, Safari, nightly WebKit).