THis is what I have on my top page and it works:
object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="511" height="140" id="welcome_header" align="middle">
<param name="allowScriptAccess" value="sameDomain" />
<param name="movie" value="welcome_header.swf" />
<param name="quality" value="high" />
<param name="bgcolor" value="#ffffff" />
<embed src="http://www.MYDOMAIN.com/images/categoryheaders/welcome_header.swf" quality="high" bgcolor="#ffffff" width="511" height="140" name="welcome_header" align="middle" allowscriptaccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />
</object>
hope this helps