separate browsing sessions per window

[David Beckwith]

Hello,

  I noticed that when opening a website in two windows in webkit, and logging in with one window, they share the same document.cookie.  Is there a way to prevent this?  I would like each window to be a separate "user."  I'm using this for testing my web app.

  Thank you,

  David :)

[David Beckwith]

There is a --user-data-dir=/path/to/foo flag in chromium.  Would it be possible to expose that to the Window.open options object?