function formCheck(){

	var flag = 0;

	if(document.form1.pay.value == 0){
		flag = 2;
	}


	if(flag == 2){
		window.alert('レッスンが選択されていません');
		return false; // 送信を中止
	}else{
		return true;
	}
}

function paymentCount(code){
	var payment = 0;
	var cost = 0;
	var msgcnt =7;
	var les = new Array(7); 

	for(i = 0; i <= 7; i++){
	   les[i] = new Array(msgcnt);      /* ２次元配列作成  */
	}

	les[0][0] = "a";
	les[0][1] = 4300;
	les[1][0] = "b";
	les[1][1] = 4300;
	les[2][0] = "c";
	les[2][1] = 5250;
	les[3][0] = "d";
	les[3][1] = 4300;
	les[4][0] = "e";
	les[4][1] = 5250;
	les[5][0] = "f";
	les[5][1] = 5250;
	les[6][0] = "g";
	les[6][1] = 5250;


	for(i = 0; i < 7; i++){
	  if(les[i][0] == code){
			cost = les[i][1]
		}
	}

	if(document.form1.pay.value == ''){	
		payment = 0;
	}else{
		payment = document.form1.pay.value;
	}

	for(var i = 0; i < document.form1.elements.length; i++){
		if(document.form1.elements[i].id == code){
			if(document.form1.elements[i].checked == true){
				payment = parseInt(payment) + parseInt(cost);
			}else{
				payment = parseInt(payment) - parseInt(cost);
			}
		}
	}
		document.form1.pay.value = payment;

}