CCS Drop Down problems over flash... tried the obvious

I have a site that I am working on located here:

http://clients.mirageadv.com/tiki/index.php

This drop down works above the flash banner in FF (Mac), Safari, Chrome, but not in FF or IE (PC)… I have tried the following:

The solution that I found all over the web and seemed to work for most people:
Make sure your embed and object codes include the wmode parameter set to transparent:
param name=”movie” value=”xxx.swf”
param name=”quality” value=”high”
param name=”wmode” value=”transparent”

This has worked in the past for me… but not this time around…

my css file is located here: master.css

Any ideas? this is driving me nuts.

Thanks in advance for any help.