I've discovered that <http://ibmdw.safaribooksonline.com>
detect browser's identity (CMIIW). I'm using Firefox 8.0 to
open ibmdw website. When I paste opened pattern to another
Firefox 8.0's browser then no need to re-enter
username/password anymore. But when I paste it to IE 6.0, it
doesn't work at all.

Is it possible that Httrack can be detected to be exactly
the as my current browser ?I tried to change browser ID exactly the same as
mine but it
didn't work.