function calnight()	{
	var current_date = new Date()
	current_date.setYear(document.form.ayear.value)
	current_date.setMonth(document.form.amonth.value - 1)
	current_date.setDate(document.form.aday.value)
						
	// Store the date of the next New Year's Day
	var new_years_date = new Date()
	new_years_date.setYear(document.form.dyear.value)
	new_years_date.setMonth(document.form.dmonth.value - 1)
	new_years_date.setDate(document.form.dday.value)
						 
	// Call the days_between function
	var days_left = days_between(current_date, new_years_date)

	document.form.nnight.value = days_left;
}