Hi Chris,

Thanks for the response. Unfortunately, that is what i'm already doing:

var dReturnDate =
eventObj.Source.selectSingleNode("/ar:absenceRequest/ar:leaves/ar:leave/ar:returnDate").text;
    if(dStartDate != "" && dReturnDate != "")
    {
        var dStartDate2 = new
Date(dStartDate.substring(0,4),dStartDate.substring(5,7)-1,dStartDate.substring(8,10));
        var dReturnDate2 = new
Date(dReturnDate.substring(0,4),dReturnDate.substring(5,7)-1,dReturnDate.substring(8,10));
        //Calculate weekdays
        var iTotalDays = ((dReturnDate2 - dStartDate2)/86400000)+1;
        var dtDate = new Date(dStartDate2);
        var iWeekDays = 0;
        while (iTotalDays > 0)
        {
            var flag = 0;
            if (new Date(dtDate).getDay() % 6 != 0)
            {
                for (i = 0; i <= BankHolidays.length - 1; i++)
                {
                    if (dtDate - BankHolidays[i] >= 0 && dtDate - BankHolidays[i] <= 7200000)
                        flag = 1;
                }
                if (flag == 0)
                    iWeekDays++;
            }
            var dateInMs = dtDate.getTime();
            dateInMs += 86400000;
            dtDate.setTime(dateInMs);
            iTotalDays = iTotalDays - 1;
        }
        eventObj.Source.selectSingleNode("/ar:absenceRequest/ar:leaves/ar:leave/ar:hours").text = iWeekDays;               
    }
    else
    {
        eventObj.Source.selectSingleNode("/ar:absenceRequest/ar:leaves/ar:leave/ar:hours").text = "0.0";
    }

The code (from the returnDate: OnAfterChnage event) takes the two dates and
calculates how many weekdays lies between them (excluding bank holidays) and
writes it to the /ar:hours field.

As before, this works fine for the first row in the table, however, any
subsequent rows simply update the first rows hours using the first rows
dates. Do i need to loop through all rows in the table each time?

Any suggestions would be greatly appreciated,
Cheers,
Martyn...