function LastDayOfMonth(Year, Month) { return(new Date((new Date(Year, Month,1))-1)).getDate(); }

function updateReturn(returnDay) {
	
	var retDayObj = document.getElementById('ret_date');
	var retMonthObj = document.getElementById('ret_month');
	var retHourObj = document.getElementById('ret_hour');
	var retMinObj = document.getElementById('ret_min');
	var owdDayObj = document.getElementById('out_date');
	var owdMonthObj = document.getElementById('out_month');
	var owdHourObj = document.getElementById('out_hour');
	var owdMinObj = document.getElementById('out_min');

	retDayObj.value = owdDayObj.value;
	retDayObj.text = owdDayObj.text;
	retMonthObj.value = owdMonthObj.value;
	retMonthObj.text = owdMonthObj.text;
	
	if (owdMinObj.value == '45') {
		if (owdHourObj.value == '23') {
			retHourObj.value = '0';
			retHourObj.text = '00';
			// Last day in the month?
			if (parseInt(owdDayObj.value) >= parseInt(LastDayOfMonth(2008, owdMonthObj.value))) {
				retMonthObj.value = (parseInt(owdMonthObj.value) + 1) + '';
				retMonthObj.text = (parseInt(owdMonthObj.text) + 1) + '';		
				retDayObj.value = '1';
				retDayObj.text = '01';				
			} else {
				retDayObj.value = (parseInt(owdDayObj.value) + 1) + '';
				retDayObj.text = (parseInt(owdDayObj.text) + 1) + '';
			}
		} else {
			retHourObj.value = (parseInt(owdHourObj.value) + 1) + '';
			retHourObj.text = (parseInt(owdHourObj.text) + 1) + '';
		}
		retMinObj.value = '0';
		retMinObj.text = '00';
	} else { 
		retHourObj.value = owdHourObj.value;
		retHourObj.text = owdHourObj.text;
		retMinObj.value = (parseInt(owdMinObj.value) + 15) + '';
		retMinObj.text = (parseInt(owdMinObj.text) + 15) + '';
	}
	
	// Return the next day
	if (returnDay == false) {
		// Now make it the day + 1
		if (parseInt(owdDayObj.value) >= parseInt(LastDayOfMonth(2008, owdMonthObj.value))) {
			retMonthObj.value = (parseInt(owdMonthObj.value) + 1) + ''; 
			retMonthObj.text = (parseInt(owdMonthObj.text) + 1) + '';	
			
			if (owdMinObj.value == '45' && owdHourObj.value == '23') {
				retDayObj.value = '2';
				retDayObj.text = '02';
			} else {
				retDayObj.value = '1';
				retDayObj.text = '01';
			}
		} else {
			retDayObj.value = (parseInt(owdDayObj.value) + 1) + '';
			retDayObj.text = (parseInt(owdDayObj.text) + 1) + '';
		}
	}			
}