La pelicula la introduzo asi en el html
<div class="flash">
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" width="940" height="300" id="miflash" VIEWASTEXT>
<param name="movie" value="images/prueba_intro.swf" />
<param name="menu" value="false" />
<param name="wmode" value="opaque" />
<param name="bgcolor" value="#ffffff" />
<param name="allowfullscreen" value="false" />
<!--[if !IE]>-->
<object type="application/x-shockwave-flash" data="images/prueba_intro.swf" width="940" height="300" ID="Shockwaveflash1" VIEWASTEXT>
<param name="menu" value="false" />
<param name="wmode" value="opaque" />
<param name="bgcolor" value="#ffffff" />
<param name="allowfullscreen" value="false" />
<!--<![endif]-->
<a href="http://www.adobe.com/go/getflashplayer">
<img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="Get Adobe Flash player" />
</a>
<!--[if !IE]>-->
</object>
<!--<![endif]-->
</object>
</div>