embed引入类型type="application/x-itst-activex"遮挡菜单问题

        <embed id="test1" name="test1" clsid="{45EA7421-F675-4930-960C-5ED678766181}" windowlessVideo="true" width="100%"
               height="600" type="application/x-itst-activex">
        </embed>

http://blog.csdn.net/zhichao2001/article/details/9493141

用iframe做你的div的背景，demo：浮动层div遮盖select
同时设置embed的wmode="transparent"