                return OBJ_VEL * (Math.random()-0.5);
            }

            function randPos () {
			    return (PLANE_SIZE-2) * (Math.random()-0.5);
            }

            function randSpin () {
                return OBJ_SPIN * (Math.random()- 0.5);
            }

            function createBox( count ) {

                var geom = new THREE.BoxGeometry(OBJ_SIZE * 2, OBJ_SIZE * 2, OBJ_SIZE * 2);
                var material = new THREE.MeshLambertMaterial({
                    col