Wouldn't it be good to specify the behavior of type null in *append* method of Form data?
Right now Safari sends string* "null".* Chrome sends empty string "". I think Chrome's implementation is more right, because in a html form you can't send null value, just empty strings http://www.w3.org/TR/XMLHttpRequest2/#the-append-method -- Sincerely, Tingan Ho tin...@p1.cn