IE XMLDOM function nodeFromID and the field xml are unresolved

Hi guys!

My version is Webstorm 1.0.2 WS-95.503

I use MSXML

xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async = "false";
xmlDoc.loadXML(xmlText);

in javascript to parse XHTML with IE8 like that:

innerHTML = xml.nodeFromID("ID").xml;

xmlDoc.nodeFromID("ID") is a function equivalent to getElementById in normal XHTML DOM
xml is a field in every IXMLDomElement

Webstorm  does not recognize them, gives "Unresolved function or method" error  and there is no option to switch off the check for the affected elements  or add the missing functions and fields to some custom template.

I already posted a bug http://youtrack.jetbrains.net/issue/WI-3836

In the meantime, do you know some way to workaround that?