function hiddenAllArea(){
		$('areaHokkaido').style.display = "none";
		$('areaTouhoku').style.display = "none";
		$('areaKantou').style.display = "none";
		$('areaChubu').style.display = "none";
		$('areaKinki').style.display = "none";
		$('areaChugoku').style.display = "none";
		$('areaShikoku').style.display = "none";
		$('areaKyushu').style.display = "none";
	}
	function changeArea(area){
		hiddenAllArea();
		$(area).style.display = "block";
	}