JQuery :: IE7/8 While Trying To Parse XML In An IFRAME

I am using the infamous hidden IFRAME trick to manage some image uploading. My server-side ASP page passes back XML to indicate success or failure. It was a snap to grab this in FireFox and parse it using the standard JQuery methods. Then I spent most of an afternoon trying to do the same in IE, I finally found this page and this comment: [url]

JavaScript, IE, XML, IE uses MSXML and an XSL stylesheet to transform the XML to some HTML document that pretty-prints the structure of the XML. That way when you access the iframe document you indeed access an HTML document that IE renders. However IE stores the original XML document in an XMLDocument property of the HTML document object so to access the XML data (and not the HTML document) you can do e.g. var xmlDoc = window.frames.frameName.document.XMLDocument; [...]

The solution thus ended up as follows:

From there I can use all of the normal JQuery code to traverse the XML. Anyway I am not sure if this is an IE bug, a JQuery bug and/or presumably specific to this wacky IFRAME scenario versus a normal document.