javascript 2 dimesion array definition

var myArray = new Array( new Array(), new Array(),new Array(),new Array(),new Array(),new Array(),new Array(),new Array() );

myArray[0][0] = 1;
myArray[0][1] = 43;
myArray[0][2] = 14;
myArray[0][3] = 34;
myArray[0][4] = 9;
myArray[0][5] = 5;
myArray[0][6] = 26;
myArray[0][7] = 11;

myArray[1][0] = 10;
myArray[1][1] = 58;
myArray[1][2] = 38;
myArray[1][3] = 54;
myArray[1][4] = 61;
myArray[1][5] = 60;
myArray[1][6] = 41;
myArray[1][7] = 19;

myArray[2][0] = 13;
myArray[2][1] = 49;
myArray[2][2] = 30;
myArray[2][3] = 55;
myArray[2][4] = 37;
myArray[2][5] = 63;
myArray[2][6] = 22;
myArray[2][7] = 36;

myArray[3][0] = 25;
myArray[3][1] = 17;
myArray[3][2] = 21;
myArray[3][3] = 51;
myArray[3][4] = 42;
myArray[3][5] = 3;
myArray[3][6] = 27;
myArray[3][7] = 24;

myArray[4][0] = 44;
myArray[4][1] = 28;
myArray[4][2] = 50;
myArray[4][3] = 32;
myArray[4][4] = 57;
myArray[4][5] = 48;
myArray[4][6] = 18;
myArray[4][7] = 46;

myArray[5][0] = 6;
myArray[5][1] = 47;
myArray[5][2] = 64;
myArray[5][3] = 40;
myArray[5][4] = 59;
myArray[5][5] = 29;
myArray[5][6] = 4;
myArray[5][7] = 7;

myArray[6][0] = 33;
myArray[6][1] = 31;
myArray[6][2] = 56;
myArray[6][3] = 62;
myArray[6][4] = 53;
myArray[6][5] = 39;
myArray[6][6] = 52;
myArray[6][7] = 15;

myArray[7][0] = 12;
myArray[7][1] = 45;
myArray[7][2] = 35;
myArray[7][3] = 16;
myArray[7][4] = 20;
myArray[7][5] = 8;
myArray[7][6] = 23;
myArray[7][7] = 2;

for (i = 0; i < myArray.length ;i++ )
{
var s = 0;
var n = 0;
for (j = 0; j < myArray[i].length ;j++ )
{
document.write(myArray[i][j]) ;
s = s + myArray[i][j];
n = n + myArray[j][i];

}
document.write(” : ” + n );
document.write(” = ” + s +”<br>”);

}