<script type="text/javascript"> function payChange(){ radio = document.getElementsByName('payChangeFlag') if(radio[0].checked) { document.getElementById('select_bank').style.display = ""; document.getElementById('select_credit').style.display = "none"; }else if(radio[1].checked) { document.getElementById('select_bank').style.display = "none"; document.getElementById('select_credit').style.display = ""; } } //オンロードさせ、リロード時に選択を保持 window.onload = payChange; </script>