El código que pone es:
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000" codebase="http://fpdownload.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,0,0" width="800" height="600" id="entrada" align="bottom">
<param name="allowScriptAccess" value="sameDomain" />
<param name="movie" value="entrada.swf" />
<param name="quality" value="high" />
<param name="salign" value="rb" />
<param name="wmode" value="transparent" />
<param name="bgcolor" value="#ffffff" />
<embed src="entrada.swf" quality="high" salign="rb" wmode="transparent" bgcolor="#ffffff" width="800" height="600" name="entrada" align="bottom" allowScriptAccess="sameDomain" type="application/x-shockwave-flash" pluginspage="http://www.macromedia.com/go/getflashplayer" />
</object>
Lo que no parece cumplir es: wmode="transparent"