calendar[row][0].isoWeek() + '</td>';
L781:
L782:                for (var col = 0; col < 7; col++) {
L783:
L784:                    var classes = [];
L785:
L786:                    //highlight today's date
L787:                    if (calendar[row][col].isSame(new Date(), "day"))
L788:                        classes.push('today');
L789:
L790:                    //highlight weekends
L791:                    if (calendar[row][col].isoWeekday() > 5)
L792:                        classes.push('weekend');
L793:
...