This demo tries to capture your mouse cursor, so that you can use the mouse to look around the world. But it's malfunctioning (on Chrome, Win 7 x64).

Synopsis: the first time it loaded, I clicked on the canvas. That popped up a banner at the top of my browser window which said something like "so-and-so website would like to take over your mouse cursor. Allow or deny?" So I tried to click on the allow button, but wound up accidentally clicking a bookmark, which of course navigated me away. So I hit the back button, which reloaded the demo. But now it's not trying to capture my mouse anymore, regardless of what I do.

Just writing that up on the off-chance it's helpful to the author. The itself bug doesn't matter much, though.

Author: fantastic work, fantastic execution.