选中刚才已插入的flash动画，右击鼠标选择properties调出属性面板后，再单击parameter按钮，在弹出的对话框中点击加号图标，在左侧的parameter中键入wmode在右侧的value框内键入transparent点击ok,按f12进行预览,ok!
<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="350" height="180" title="flash">
<param name="movie" value="flash.swf" />
<param name="quality" value="high" />
<param name="wmode" value="transparent" />
<embed src="flash.swf" width="350" height="180" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" wmode="transparent"></embed>
</object>