function go_cars(k,n)
    {
        document.getElementById('div_car_'+k+'_1').style.display='none';
        document.getElementById('div_car_'+k+'_2').style.display='none';
        document.getElementById('div_car_'+k+'_3').style.display='none';

        document.getElementById('div_car_'+k+'_'+n).style.display='';

        document.getElementById('car_little_'+k+'_1').style.display='none';
        document.getElementById('car_little_'+k+'_2').style.display='none';
        document.getElementById('car_little_'+k+'_3').style.display='none';
        document.getElementById('car_little_'+k+'_1_').style.display='none';
        document.getElementById('car_little_'+k+'_2_').style.display='none';
        document.getElementById('car_little_'+k+'_3_').style.display='none';

        document.getElementById('car_little_'+k+'_'+n).style.display='';

        if(n==1)
        {
            document.getElementById('car_little_'+k+'_2_').style.display='';
            document.getElementById('car_little_'+k+'_3_').style.display='';
        }
        if(n==2)
        {
            document.getElementById('car_little_'+k+'_1_').style.display='';
            document.getElementById('car_little_'+k+'_3_').style.display='';
        }
        if(n==3)
        {
            document.getElementById('car_little_'+k+'_1_').style.display='';
            document.getElementById('car_little_'+k+'_2_').style.display='';
        }
    }