document.write("ID  Test Scores "+"</br>");
 for (i=0; i<size; i++)
    {
     document.write(ar[i][0]+" ");
     var lowest = ar[i][1];
     for (j=1; j>=num_test; j++)
        { document.write(ar[i][j] + " ");
          if (lowest>ar[i][j])
              lowest= ar[i][j];
        }
     document.write(" Lowest score is " + Lowest+ "</br>");