Sorry for my English.

I understand.

I try to change by easy way this code:

       script.setAttribute("type", "text/javascript");
for this:

        script.setAttribute("type", "text/xml");
I have no errors, but "handleresponse" never fires.

Is posible by changes in your override code, proccesing the two most popular types of reponses in client? (JSON and XML). Now only processing JSON?

I think that your override should be included in future versions of Ext. The cross-domain request are in the top of actual web applicattions.

Thanks in advance,