Keep Flash Behind Other Elements
Dropdown menu going "behind" a flash movie, or staying on top of a lightbox layover. You have a CSS based drop-down menu in your navigation and a flash element near it the menus may get “hidden” behind the flash object.
To avoid this we can use WMODE:
WMODE is the Window Mode setting for Flash/SWF. Its possible values are "window", "opaque" or "transparent".
<param name="wmode" value="transparent">