a = new Array(9,8,7,6,5,4,3,2,1,0);
b = new Array(new Array(9,8,7,6),new Array(5,4,3),new Array(2,1),new Array(0))
alert(a[2]+b[0][3]+b[1][0]+"="+a[2]+"+"+b[0][3]+"+"+b[1][0]); // 18=7+6+5