How do I stop embedded view with Java applet going on top of everything?

I’m trying to build a Navigation menu in my application using DHTML. The menu works fine, but the problem I have is that I can’t get the menu to appear on top of my embedded view. The view goes on top of any other frame/layer. I’ve tried putting the view in a layer and giving the layer a negatice Z-value, but hat didn’t help. Does anyong know how I can get my view to appear under my navigation menu?