ADP it's not my call but the clients'. I just don't understand why it would be a substanital amoutn of work to make sure that xcart content stays in 1 frame, I dont htink it would involve any extra work at all (maybe I'm wrong?).
Afterall a frame always opens a new page in it's own framespace unless you specify a different target frame.
I'm no expert in frames so I will leave this to the frame experts
