Http://www.mypedia.it/Scripts/AC_RunActiveContent.js
in quella path hai messo il file?
e qui aggiungi le parti in rosso
codice:
<script type="text/javascript">
AC_FL_RunContent( 'codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0','width','550','height','400','src','Http://www.mypedia.it/Flash/assegni.swf' ,'quality','high','pluginspage','http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash','movie','Http://www.mypedia.it/Flash/assegni.swf ' ); //end AC code
</script>