Z-index and flash content

Hi,
I’ve recently made a Flash drop-down menu and made it overlap the HTML below it through the use of z-index. I found out how to do it here: http://www.kirupa.com/forum/showthread.php?t=282459

It’s working fine, however in IE 5.5 and 6 the overlapping Flash content removes part of a background image. Attached are screenshot examples.

Does anyone know what I can do to fix this problem?

I’ve uploaded the test site at http://www.freewebs.com/superpremiumgoodtimewebsite and the css is here

If anyone can help me out I’ll love you forever.

Thanks in advance!

PS. The Firefox screenshot is how it should look. ;D