NIST The "setPrefix(prefix)" method raises a NAMESPACE_ERR DOMException if the specified node is an attribute and the specified prefix is xmlns and the namespaceURI is different from http://www.w3.org/2000/xmlns. Attempt to insert "xmlns" as the new namespace prefix on the emp:domestic attribute within the emp:address node. An exception should be raised since the namespaceURI of this node is not http://www.w3.org/2000/xmlns. Mary Brady 2001-08-17