[jQuery] set statusMessage for $.ajax error func callback on server?

[jQuery] set statusMessage for $.ajax error func callback on server?


How to set statusMessage for the error callback function on the
response?
Not sure if anyone uses ColdFusion, but I use <cfheader
statuscode="403" statustext="this is an error">, however
alert(statusMessage) always show the string "error" only.
Thanks in advanced.