Is that possible to setting a transparent background image for element?

[Yonggang Luo]

I want to preserve the aero effect of the Window, but I also need to customize 
the UI, so I need a transparent background image for the top level <window> 
elemetn, is that possible?
_______________________________________________
dev-platform mailing list
dev-platform@lists.mozilla.org
https://lists.mozilla.org/listinfo/dev-platform