Embed a swf file

[AmazingAnt]

I've got a swf file embeded like so:

<object width="550" height="400">
<param name="movie" value="file.swf">
<embed src="file.swf" width="550" height="400">
</embed>
</object>

And although it's a game, not a movie, I'm only going off of what I found with a google search. When I embed it like this, it gets white bars on the sides. I could just change the size, but the filename is being picked dynamically via PHP. Is there some way I could change the white bars to black? Or even better, transparent?

[_Aerospace_Eng_]

<object type="application/x-shockwave-flash" data="file.swf" width="550" height="400">
<param name="movie" value="file.swf">
<param name="scale" value="exactfit">
If you are reading this it means you don't have flash player installed. Get it <a href="http://www.adobe.com/go/gntray_dl_getflashplayer" target="_blank">here</a>
</object>

[AmazingAnt]

Thanks!~