Creating Java/DHTML Vertical Navigation Menu in FrontPage

Hello,

I'm currently creating a new version of our internal office intranet
using Microsoft FrontPage and one of the features I would like to us
is a menu of sorts using Java/DHTML.

The navigation pane/menu will be on the left-hand side of the screen
so it will be a vertical menu - much like the example on this page:
http://dhtml-menu.com/examples/ex2-vertical-dhtml-menu.html.

What I would like to know is:

1. Is it possible to create this sort of menu without purchasing an
add-on for FrontPage?
2. If you need to purchase an add-on, does anyone have any
recommendations for a program?

Thank you!
.

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