CSS drop down menu help

[juice454]

Trying to construct a drop down menu using CSS. Very close to completion just having issues with the drop down itself not staying visible when trying to roll down. See for yourself: http://www.flyingarrows.com/index3.php

All related code is in the doc.
Anyone got any ideas!?
Help appreciated greatly!!

[NewComputer]

Here is one that I have been playing with, seems to work well.

Just view the source:

http: //members.shaw. ca/abbotsfordpilots/test/index.html