Menus and Pages Problem

Hopefully this is an easy one for the Lectora brain trust (that would be all of you).


Here's what I have.


From a parent page (page A), the student can click a "Menu" button and display a window-based child pop-up that lists all the topics (which are separate pages) that are part of the current lesson.


Student clicks the appropriate topic link from the menu pop-up and the new topic page SHOULD replace page A.


Unfortunately, as many of you have probably already figured out, the new topic page replaces the content of the menu pop-up.


How would I get the new topic page to replace page A?


Thanks.

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