[UnrealEd]

jsu tdo the same thing the other way:

Code:

var newwindow = window.open('something', 'newwindow', 'options');
newwindow.document.foo.attach1.value = 'Testing1';

this will ste the value of attach1 to 'Testing1' in the child window.
No need to use cokies or sessions

Greetz,
UnrealEd