wrapper = function(remember, resize)
		{
			if (remember || force)
			{
				mxSettings.setResizeImages((remember) ? resize : null);
				mxSettings.save();
			}
			
			resume();
			fn(resize);
		}
Parses the file using XHR2 via the server. File can be a blob or file object.
Filename is an optional parameter for blobs (that do not have a filename).