Display 3D scenes on silverlight

I recently learned how to use silverlight because of my work needs. It is found that xaml originally supports 3D, but the xaml on silverlight does not support 3d. I think of a javascript code called svgvml3d that can be used to draw 3d scenes through vml or svg. So I used it for modification. After half a day of hard work, I finally came up with a general look.
Click here to download the code

One advantage of using silverlight is that it is easy to draw a translucent effect.

This code runs normally on IE, but there is a problem on firefox on my machine. I can't find the reason at the moment. I hope you can give me some advice.

----------------------------
Thanks to the selfless dedication of svgvml3d, I can learn from it.