Hola ana_lorena
Código HTML:
<script type="text/javascript">
AC_FL_RunContent( 'codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0','width','818','height','518','title','nueva','src','nueva','quality','high','pluginspage','http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash','movie','nueva' ); //end AC code
</script><noscript><object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0" width="818" height="518" title="nueva">
<param name="movie" value="nueva.swf">
<param name="quality" value="high">
<embed src="nueva.swf" quality="high" pluginspage="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="818" height="518"></embed>
</object></noscript> Prueba a cambiar de lugar la etiqueta <noscript></noscript>, es decir:
Código HTML:
<script type="text/javascript">
AC_FL_RunContent( 'codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0','width','818','height','518','title','nueva','src','nueva','quality','high','pluginspage','http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash','movie','nueva' ); //end AC code
</script><object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0" width="818" height="518" title="nueva">
<param name="movie" value="nueva.swf">
<param name="quality" value="high">
<embed src="nueva.swf" quality="high" pluginspage="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="818" height="518"></embed>
</object>
<noscript>Aca creo que va un mensaje en caso de no verse el flash, o que el usuario no tenga activo el javascript</noscript> Saludos
PD: lee
esto