//grey out end dates beyond the maxSpan
            if (this.endDate == null && this.maxSpan) {
                var maxLimit = this.startDate.clone().add(this.maxSpan).endOf('day');
                if (!maxDate || maxLimit.isBefore(maxDate)) {
                    maxDate = maxLimit;
                }
            }

            for (var row = 0; row < 6; row++) {
                html += '<tr>';