My Main Menu Drop Downs are showing Behind my Flash Header

I need help fixing my main menu; the dropdowns are showing behind the flash header I've added wmode to the code and cleared the cache but there is no change.  If someone could please help me with this issue it would be greatly appreciated...  Thank you

The wmode worked for me, this is the exact code I'm using & it stays behind the menus:

<div class="flash_wrapper">
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" name="preview" width="700" height="300" align="middle" id="preview">
<param name="allowScriptAccess" value="sameDomain" />
<param name="movie" value="http://www.*****.com/promo/preview.swf" />
<param name="quality" value="high" />
<param name="bgcolor" value="#000000" />
<param name="wmode" value="opaque" />
<embed src="http://www.*****.com/promo/preview.swf" quality="high" bgcolor="#000000" width="700" height="300" name="Slider" align="middle" allowscriptaccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" wmode="opaque"/> 
</object></div>

Notice I had to call it out as a param name and within the embed string itself.

When you clear your cache make sure you go in and manually clear \cache, \cache_public & \tmp from your root web directory using FTP (leave only .htaccess files in there).

Hope this helps!