function showYear(year) {
	$('show-year-' + year).hide();
	$('hide-year-' + year).show();
	$('children-year-' + year).show();
}

function hideYear(year) {
	$('show-year-' + year).show();
	$('hide-year-' + year).hide();
	$('children-year-' + year).hide();
}

function showMonth(month,year) {
	$('show-month-' + month + '-' + year).hide();
	$('hide-month-' + month + '-' + year).show();
	$('children-month-' + month + '-' + year).show();
}

function hideMonth(month,year) {
	$('show-month-' + month + '-' + year).show();
	$('hide-month-' + month + '-' + year).hide();
	$('children-month-' + month + '-' + year).hide();
}