Z index issue

im working on a little flashy slider for my boss. I finished it and when i go to put it in place, it appears above the js menu on the side. i tried putting the fla in its own div with a z index of 1, 0 and -1 and it still appears above the js menu.

go ovaer fisrst menu item to see my delima.
http://cards.holidays.net/

anyone know why??