ASP:Menu overwrite by Flash

[ascll]

Greetings,

I'm using ASP:Menu in my website, but the drowdown submenu seems not able to
display correctly "on top" of flash. The menu disappear in second and
"overwrite" by flash. Anyway, I have no issue when the flash is being turn
off or the menu show on the blank screen. the issue happend on IE, Firefox
and Safari.

Btw, I'm using VS2005 with ASP.net 2.0 on Windows XP Pro PC.

Kindly advise.

Thanks
ascll