prova cosi':
Codice PHP:
<script type="text/javascript" src="swfobject.js"></script>
<div id="flashcontent">
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" width="550" height="400">
<param name="movie" value="intro.swf" />
<param name="quality" value="high" />
<embed src="intro.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="550" height="400"></embed>
</object>
</div>
<script type="text/javascript">
var so = new SWFObject("intro.swf", "mymovie", "550", "400", "8", "#FFFFFF");
so.write("flashcontent");
</script>
ho notato che in questo modo se su explorer c'e' l'aggiornamento utilizza ogetto altrimenti prende il classico embed.