EaselJS Two Stages passing mouse events

This example shows a Context2D Stage (green) passing unhandled mouse events through to a WebGL SpriteStage (blue) layered below it via .nextStage. Notice that the rollover on the bottom stage works even while over the top (green) canvas.

For example, this could be used for layering a rich UI with vector art & filters over a highly performant WebGL game engine.