how to *not* add X-Requested-With

how to *not* add X-Requested-With


How can I do an AJAX request with jQuery and *not* add the X-Requested-
With header?
I am trying to do a cross domain request with Firefox 3.5 and the X-
Requested-With header means that the request is "preflighted", which
the cross domain resource is not setup to handle,
https://developer.mozilla.org/En/HTTP_access_control
The cross domain resource is setup to handle "simple" requests, but I
cannot figure out how to make the request with jQuery and *not* add
the X-Requested-With header.