Mmmm, it does not do the trick, with this code:
{source 0}
<div id="video_player">
Instaleer de recente versie van de <a href="http://www.adobe.com/products/flashplayer/" target="_blank">Flash player</a> om een video-clip van deze accommodatie te bekijken!
</div>
<script type="text/javascript">
var so = new SWFObject("http://www.mysite.nl/images/acco_video/1.swf?vid=blablabla", "video_player", "350", "226", "9.0.115");
so.addParam("quality", "high");
so.write("video_player");
</script>
{/source}
I should see a flash player, but the text in the div wont be replaced by the javascript. The SWFobject is included in the head of the page.