var js = 2;
var pieces = new Array(0, 0, 0, 80, 0, 0, 160, 0, 0, 240, 0, 0, 300, 0, 0, 400, 0, 0,
                       0, 80, 0, 80, 80, 0, 160, 60, 0, 220, 80, 0, 320, 60, 0, 380, 60, 0,
                       0, 160, 0, 60, 140, 0, 140, 140, 0, 220, 160, 0, 320, 140, 0, 400, 160, 0,
                       0, 220, 0, 80, 220, 0, 160, 240, 0, 220, 220, 0, 320, 240, 0, 380, 240, 0,
                       0, 320, 0, 80, 320, 0, 140, 320, 0, 240, 320, 0, 300, 300, 0, 400, 300, 0);