For those still having problem with flash the following code satisfies both Firefox and IE
<object type="application/x-shockwave-flash" data="http://www.yoursite/yourfile.swf" width="700" height="140">
<param name="movie" value="http://www.yoursite/yourfile.swf">
<param name="quality" value="high">
<embed src="http://www.yoursite/yourfile.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="714" height="142"></embed>
</object>
dont forget to change dimensions for your flash movie according to your needs 
this works for me 
thanks
very nice gallery by the way !!!