function SubmitForm() {
	 if(document.mail_form.name.value == "") {
		alert("名前を入力してください");
	} else if(document.mail_form.mail.value == "" || document.mail_form.mail_confirm.value == "" || (document.mail_form.mail.value != document.mail_form.mail_confirm.value)) {
		alert("メールアドレスが正しく入力されていません");
	} else {
		if(confirm("以上の条件で送信しますか？")) {
			document.mail_form.action = "http://" + window.location.hostname + "/mail_information/easy_mail_thanks.php";
			document.mail_form.submit();
		}
	}
}

function ChangeMakerName() {
	document.mail_form.car_name.value = "";
	document.mail_form.nensiki.value  = "";
	document.mail_form.submit();
}

function ChangeCarName() {
	document.mail_form.nensiki.value  = "";
	document.mail_form.submit();
}

function ChangeNensiki() {
	document.mail_form.submit();
}