function GotoNextCar()
{
    var step = 247;
    var currentTop = document.getElementById('content2_right_inner_container').style.marginTop; 
    var currentTopInt = parseInt(currentTop);
    var newTopInt = (currentTopInt - step) % (3 * step);
    document.getElementById('content2_right_inner_container').style.marginTop = newTopInt.toString() + 'px';
}