Rails Popup Window Not Passing Session Data

I am using sessions to authenticate users for a web based application I
am writing. I need to open popup windows for certain functions. These
popup windows pass the session information in Mozilla allowing the
window to display the proper content.

In internet explorer, it seems as though the session is not passed and
the login screen comes up inside of the popup window. Does anybody know
a simple way to pass session information into the popup window for IE?