Controller/view in div

I have a page which is invoked and displays its view. However, I wish
to put up a lightbox/redbox wherein I want a solitary record's form
displayed for editing, a form that corresponds to a different table
than the one being displayed which will invoke the lightbox/redbox.

Therefor, how can I make a view contain a div that corresponds to the
controller/view of another table? Thanks, RVince