Create a form called "Navigator" with this code at the top of the page:
and add a field named $$NavigatorBody that evaluates to the name of the navigator.
Add the frame with this code which will place the navigator at the top and a default view at the bottom:
<FRAMESET FRAMEBORDER=0 FRAMESPACING=0 ROWS="45,*">
<FRAME SRC="/db.nsf/Navigator/?OpenForm" MARGINHEIGHT=0 MARGINWIDTH=0 SCROLLING=NO NAME="top">
<FRAME SRC="/db.nsf/By+Category?OpenView" MARGINHEIGHT=0 MARGINWIDTH=0 SCROLLING=NO NAME="bottom">
This HTML must go into a field named $$HTMLHead so that it is generated before the <body>; alternatively, you can make a single field named HTML in your form and place this code in it.