engine.switchFullscreen(true); does not work. How are other people with 3D scenes getting the display into fullscreen? Looks like you need to put a native html button on the page, but then the scene will not be covering the entire display. The stereo rigs for sure will not work right unless they use the entire screen. You also need to delete the button afterward, or the illusion is going to be destroyed.
If you put in a Dialog extension button or I assume bGUI, it does not work. It has