function animLoop( render, element ) {
    var running, lastFrame = +new Date;
    function loop( now ) {
        // stop the loop if render returned false
        if ( running !== false ) {
            requestAnimationFrame( loop, element );
            var deltaT = now - lastFrame;
            // do not render frame when deltaT is too high
            if ( deltaT < 160 ) {
                running = render( deltaT );
            }
            lastFrame = now;
        }
    }
    loop( lastFrame );
}