function setStyle(x)
{
document.getElementById(x).value=""
}

function validate_required(field, alerttxt) {

	alerttxt += "を入力してください。";

	if (field.value == null || field.value == "") {
		alert(alerttxt);
		return false;
	}

	return true;
	
}
	
function validate_email(field,alerttxt) {
	with (field) {
		apos=value.indexOf("@")
		dotpos=value.lastIndexOf(".")
		if (apos<1||dotpos-apos<2) {
			alert(alerttxt); return false;
		}
		else {
			return true;
		}
	}
}

 
function validate_Sub(thisform) {

	if (validate_required(thisform.lname,"姓")==false) {
		thisform.lname.focus();
		return false;
	}
	if (validate_required(thisform.fname,"名")==false) {
		thisform.fname.focus(); 
		return false;
	}
	if (validate_required(thisform.email_id,"メールアドレス")==false) {
		thisform.email_id.focus(); 
		return false;
	}
	if (validate_email(thisform.email_id,"正しいアドレスを入力してください。")==false) {
		thisform.email_id.focus(); 
		return false;
	} 

	thisform.client_id.value = 'whisk-e';
	thisform.program.value = 'subscribe';
	thisform.next_link.value = 'http://www.whisk-e.co.jp/thankyou_sub.html';
	thisform.error_link.value = 'http://www.whisk-e.co.jp/error.html';
	thisform.registration_email_send.value = 'Y';
	thisform.registration_email_screen_user.value = 'SHARED';
	thisform.registration_email_screen_name.value = 'sub-email';
	return true;

}

function validate_Unsub(thisform) {
	with (thisform) {
		if (validate_required(email_id,"メールアドレス")==false) {
			email_id.focus(); 
			return false;
		}
		if (validate_email(email_id,"正しいアドレスを入力してください。")==false) {
			email_id.focus(); 
			return false;
		} else {

		thisform.client_id.value = 'whisk-e';
		thisform.program.value = 'unsubscribe';
		thisform.next_link.value = 'http://www.whisk-e.co.jp/thankyou_unsub.html';
		thisform.error_link.value = 'http://www.whisk-e.co.jp/error.html';
		thisform.registration_email_send.value = 'Y';
		thisform.registration_email_screen_user.value = 'SHARED';
		thisform.registration_email_screen_name.value = 'unsub-email';
		return true;

		}

	}

}