[REBOL] Frames Problem

[louisaturk]

Dear REBOL friends,

I am using one frames based web site to tie several other web sites 
together so as to be able to navigate through them as parts of a unified 
body.  The header frame has links to the various web sites which display in 
the main frame.

This is working great except for one problem:  a few of these web sites 
break out of the main frame and take over the whole window.  Is there any 
way I can prevent them from doing this?

Thanks,
Louis