网页中嵌入unity3d，播放器会默认最顶层展示遮挡所有网页上的div元素，求解决办法

[viperasi]

从unity3d论坛上看到一句话：
“
I have made additional tests and here's my conclusion : the only HTML element you can successfully display over the web player is the IFRAME. However, its background has to be fully opaque. Usage of transparency make it invisible. Don't mess with Rokbox, make it simpler .
”
对HTML不是太熟悉，没太明白具体要怎么做，求详细解决办法，拜谢了。