DHTML Grid Load XML Problem

My DHTML gride file with dynamicaly generated XML in asp.net.

It Work fine in IE but problem in Mozilla Firefox (Load XML Error).

Error Type: LoadXML

Description: Incrrect XML

travmechanix.com/TripPlanner … y=Botswana

Please Check the Given URL in IE it work fine but not in FireFox


Problem caused by incorrect content-type. XML file served with text/html content type, while it must be a text/xml