<style type="text/css">
body{background:red;}
</style>
<body>
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" width="945" height="102">
<param name="movie" value="66.swf" />
<param name="wmode" value="transparent" />
<EMBED height="60" pluginspage="http://www.macromedia.com/go/getflashplayer" src="66.swf" type="application/x-shockwave-flash" width="468" wmode="transparent" quality="high"></EMBED>
</object>
注意里面的这两个东东：
wmode="transparent"
</body>