THREE.js Samples based on WebGL: Up and Running by Tony Parisi (O’Reilly). Copyright 2012 Tony Parisi, 978-1-449-32357-8. Rendering two cameras side-by-side for 3d tvs
full post in: http://picanteverde.wordpress.com/2013/06/13/3d-side-by-side-with-three-js/