Place a span tag where you want the flash to appear.
Code:
<span id="the-ad"></span>
Then in your head tags add this
Code:
<script type="text/javascript">
<!--
function loadFlash(){
document.getElementById('the-ad').innerHTML='<object type="application/x-shockwave-flash" data="your-movie.swf" width="700" height="100">'
+'<param name="movie" value="your-movie.swf">'
+'</object>';
}
//-->
</script>
And in your body tag add this
Code:
onload="loadFlash()"
so your body tag looks like this
Code:
<body onload="loadFlash()">
or if you can don't even put the ad on the page.