For the purpose of debugging, I have created XML files, which I load using XMLHttpRequest functions. All works well in Firefox, but not in IE. In IE, the "responseText" field of the response contains the data, but the "responseXML" field does not. Evidently, the content is not being recognized as XML.Ultimately, the content-type header will be set correctly when this comes from the real server, but that is not a practical way for me to develop the code. Can I specify the content type in some other way, since I am not using HTTP? (The file extension is .xml, and the file starts with <?xml version="1.0"?>, but IE doesn't recognize it as XML.Thanks for any help.