[jQuery] Nyromodal frame reference

Hi,
I'm using Nyromodal to show some web content that includes page
transitions controlled by Javascript that specifies window.location. The
trouble with this is that it navigates the main browser window rather
than navigating just within the nyromodal frame.
I'm not sure how to get round this, especially as the Nyromodal frame
seems to have no name, and I'd really appreciate some help.
Thanks!