Попробуйте убрать:
<param name="bgcolor" value="#000000" />
Код:
<object classid="clsid:d27cdb6e-ae6d-11cf-96b8-444553540000"
codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=8,0,0,0" width="500" height="281" id="intro" align="middle">
<param name="allowScriptAccess" value="sameDomain" />
<param name="allowFullScreen" value="false" />
<param name="wmode" value="transparent" />
<param name="movie" value="intro.swf" />
<param name="quality" value="high" />
<embed src="intro.swf" quality="high" width="500" height="281" name="intro" align="middle" allowScriptAccess="sameDomain" allowFullScreen="false" type="application/x-shockwave-flash" pluginspage="http://www.adobe.com/go/getflashplayer_ru" />
</object>