[flexcomponents] style of panel and titlewindow

[learner]

Hi all,

In my stylesheet i have done something like this :

Panel{
        borderSkin:Embed(source='assets/felixStyle.swf',
symbol='felixPanelBorder');

titleBackgroundSkin:Embed(source='assets/felixStyle.swf',symbol='felixpanelHeader');
        color:#ffffff;
        fontFamily:Verdana;
        fontSize:14;

}

and now I have some where in my application a instance of titleWindow :

<mx:TitleWindow ....
.............
dropShadowEnabled = "true" />

the titleWindow gets the the look and feel of panel style but it does not
shows shadow ..
what could be the reason?

Regards
PS