z-index are not working

[skyscraper]

beside my previous problem, i have another problem with the same page.

i have created two div layer, both contain flash.

the site is still the same here

look at top banner flash, suppose to show small navigation links at bottom right.

my code was correct which is,

layer1 = z-index set to 1
layer2 = z-index set to 2

problem was layer2 not show on top.

i test this on IE (ie6) and its working but
is not working on firefox, safari, seamonkey and flock.

if you not clear what i mean open this page with different browser.

any idea to fixed this.

thanks