<script language="javascript">
var nRow =3, nCol = 4;
var s = new Array(nRow);
for (var i=0; i < s.length; i++)
{
s[i] = new Array(nCol);
for (var j=0; j < s[i].length; j++)
s[i][j] = (i+1)*(j+1);
}
alert(s[2][3]);//display 12
for (i=0; i < nRow; i++)
{
alert(s[i].join(" "));
}