function change_back_number(val) {
	var form = $('#archives');
	if(val == ''){
		location.href="/contents/schedule/index.html";
	}else{
		form.submit();
	}
}

function change_back_number_e(val) {
	var form = $('#archives');
	if(val == ''){
		location.href="/e/contents/schedule/index.html";
	}else{
		form.submit();
	}
}