//set todays date
Now = new Date();
NowDay = Now.getDate();
NowMonth = Now.getMonth();
NowYear = Now.getYear();
if (NowYear < 2000) NowYear += 1900; //for Netscape

//function for returning how many days there are in a month including leap years
function DaysInMonth(WhichMonth, WhichYear)
{
	var DaysInMonth = 31;
	if (WhichMonth == 4 || WhichMonth == 6 || WhichMonth == 9 || WhichMonth == 11) DaysInMonth = 30;
	if (WhichMonth == 2 && (WhichYear/4) != Math.floor(WhichYear/4))	DaysInMonth = 28;
	if (WhichMonth == 2 && (WhichYear/4) == Math.floor(WhichYear/4))	DaysInMonth = 29;
	return DaysInMonth;
}

//function to change the available days in a months
function ChangeOptionDays(Which,Form)
{
	DaysObject = eval("document." +Form + "." + Which + "day");
	MonthObject = eval("document." +Form + "." + Which + "month");
	YearObject = eval("document." +Form + "." + Which + "year");
	Month = MonthObject[MonthObject.selectedIndex].value;
	Year = YearObject[YearObject.selectedIndex].value;
	DaysForThisSelection = DaysInMonth(Month, Year);
	CurrentDaysInSelection = DaysObject.length;
	if (CurrentDaysInSelection > DaysForThisSelection)
	{
		for (i=0; i<(CurrentDaysInSelection-DaysForThisSelection); i++)
		{
			DaysObject.options[DaysObject.options.length - 1] = null
		}
	}
	if (DaysForThisSelection > CurrentDaysInSelection)
	{
		for (i=0; i<(DaysForThisSelection-CurrentDaysInSelection); i++)
		{
			NewOption = new Option(DaysObject.options.length + 1);
			DaysObject.add(NewOption);
		}
	}
	if (DaysObject.selectedIndex < 0) DaysObject.selectedIndex == 0;
}

//function to set options to today
function SetToToday(Which,Form)
{
	DaysObject = eval("document." +Form + "." + Which + "day");
	MonthObject = eval("document." +Form + "." + Which + "month");
	YearObject = eval("document." +Form + "." + Which + "year");
	YearObject[0].selected = true;
	MonthObject[NowMonth].selected = true;
	ChangeOptionDays(Which,Form);
	DaysObject[NowDay-1].selected = true;
}

//function to write option years plus x
function WriteYearOptions(YearsAhead)
{
	line = "";
	for (i=0; i<YearsAhead; i++)
	{
		line += '<option value="';
		line += NowYear + i;
		line += '">';
		line += NowYear + i;
		line += '</option>';
	}
	return line;
}