[jQuery] Accessing window DOM through jQuery Core - can't get it to work

[jQuery] Accessing window DOM through jQuery Core - can't get it to work


Goal: From window A, I want to manipulate the DOM of window B, where
window B is the result of calling window.open().
My attempts are shown below, but Window B is never updated.
winRef = window.open("","Window B");
Try 1:
$(winRef).find("body").append("<div id=container>mr container</div>");
Try 2:
$(winRef).find("body").html("<div id=container>mr container</div>");
Try 3:
$(winRef.document.body).append("<div id=container>mr container</
div>");
Try 4:
$(winRef.document.body).html("<div id=container>mr container</div>");
The jQuery Core doc (http://docs.jquery.com/Core/jQuery#elements)
claims that it can wrap a window object.
Browser is FF2.0
Any tip is greatly appreciated, even if "that's impossible".