How to remove HTTP specific headers in Javascript

Question

Is it possible to, before sending a http message, remove some specific http headers using javascript / XmlHttpRequest ?

I\'m using a proprietary browser, so there\'s

Answer 1

Adam's answer didn't work for me. However, the following did:

xhr.setRequestHeader('Authorization', ' ');

notice, second parameter is a string containing a space instead of empty space. It does not remove header completely, but sets it to the empty string, which might be enough for some cases.