callback	= function(){
		// notify the renderer of the size change
		renderer.setSize( window.innerWidth, window.innerHeight );
		// update the camera
		camera.aspect	= window.innerWidth / window.innerHeight;
		camera.updateProjectionMatrix();
	}
Update renderer and camera when the window is resized

@param {Object} renderer the renderer to update
@param {Object} Camera the camera to update