function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function MyPagePoint(n) {
  if (n == 1) {
    document.myPoint.action="mypage_point_buy.php";
    document.myPoint.submit();
  }
  else {
    document.myPoint.action="mypage_menu.php";
    document.myPoint.submit();
  }
}

function MyPagePointBuy(n) {
  if (n == 1) {
    document.myPointBuy.action="mypage_point_confirm.php";
    document.myPointBuy.submit();
  }
  else {
    document.myPointBuy.action="mypage_point.php";
    document.myPointBuy.submit();
  }
}

function MyPagePointConfirm(n) {
  if (n == 1) {
    document.myPointConfirm.action="mypage_point_complete.php";
    document.myPointConfirm.submit();
  }
  else {
    document.myPointConfirm.action="mypage_point_buy.php";
    document.myPointConfirm.submit();
  }
}

function MyPagePointComplete() {
  document.myPointComplete.action="mypage_menu.php";
  document.myPointComplete.submit();
}

//===================================================================
// 支払い方法選択ラジオボタン
//===================================================================
function check_payment(use_point_list) {
  var select_disable;
  var effective_point = document.form1.effective_point.value;

  if (Number(effective_point) > 0) {
    select_disable = get_check_point(use_point_list);
  }
  else {
    select_disable = true;
  }

  for (var i=0; i<document.form1.payment_point.length; i++) {
    document.form1.payment_point[i].disabled = select_disable;
  }
  if (select_disable == true) {
    document.form1.use_point.disabled = true;
  }
}

//===================================================================
// アップダウンイメージファイル名
//===================================================================
var img_u_on = "img/bit_u_on.gif";
var img_d_on = "img/bit_d_on.gif";
var img_u_off = "img/bit_u_off.gif";
var img_d_off = "img/bit_d_off.gif";

//===================================================================
// ポイント使用方法ラジオボタン
//===================================================================
function check_point(val, point_free_input) {
  var select_disable = true;
  if (val == "2") {
    select_disable = false;
  }
  document.form1.use_point.disabled = select_disable;
  if (point_free_input == "1") {
    document.form1.btnUp.disabled = select_disable;
    document.form1.btnDown.disabled = select_disable;
    if (select_disable == false) {
      var use_point = document.form1.use_point.value;
      point_up_down_check(use_point);
    }
    else {
      document.form1.btnUp.src = img_u_off;
      document.form1.btnUp.style.cursor = "default";
      document.form1.btnDown.src = img_d_off;
      document.form1.btnDown.style.cursor = "default";
    }
  }
}

//===================================================================
// 次へボタン
//===================================================================
function check_use_point(use_point_list,check_target) {
  var select_disable = true;
  select_disable = get_check_point(use_point_list);

  if (select_disable == false) {
    if (document.form1.payment_point[check_target].checked) {
      var use_point = document.form1.use_point.value;
      var effective_point = document.form1.effective_point.value;

      if (use_point == "") {
        document.form1.use_point.focus();
        alert("使用ポイント数が未入力です");
      }
      else if (use_point.match(/[^0-9]+/)){
        document.form1.use_point.focus();
        alert("使用ポイント数は半角数字で入力して下さい");
      }
      else if (Number(use_point) == 0) {
        document.form1.use_point.focus();
        alert("0ポイントより大きい値を入力して下さい");
      }
      else if (Number(use_point) > Number(effective_point)) {
        document.form1.use_point.focus();
        alert("保持するポイント数を超えたポイント数を指定しています");
      }
      else {
        document.form1.submit();
      }
    }
    else {
      document.form1.submit();
    }
  }
  else {
    document.form1.submit();
  }
}

//===================================================================
// ポイント活性チェック
//===================================================================
function get_check_point(use_point_list) {
  var ret = true;
  var ary_use_point = use_point_list.split(",");

  for (var i=0; i<document.form1.payment.length; i++) {
    if (document.form1.payment[i].checked) {
      for (var j=0; j<ary_use_point.length; j++) {
        if (ary_use_point[j] == i) {
          ret = false;
        }
      }
      break;
    }
  }
  return ret;
}

//===================================================================
// ポイントアップボタン
//===================================================================
function point_up() {
  if (document.form1.use_point.disabled == false) {
    var use_point = document.form1.use_point.value;
    var effective_point = document.form1.effective_point.value;
    var price_total = document.form1.price_total.value;
    var point_unit = document.form1.point_unit.value;
    var result = Number(use_point) + Number(point_unit);
    // ポイントの加算
    if (result <= effective_point && result <= price_total && result >= 0) {
      document.form1.use_point.value = result;
      // ボタン活性確認
      point_up_down_check(result);
    }
  }
}

//===================================================================
// ポイントダウンボタン
//===================================================================
function point_down() {
  if (document.form1.use_point.disabled == false) {
    var use_point = document.form1.use_point.value;
    var effective_point = document.form1.effective_point.value;
    var price_total = document.form1.price_total.value;
    var point_unit = document.form1.point_unit.value;
    var result = Number(use_point) - Number(point_unit);
    // ポイントの減算
    if (result <= effective_point && result <= price_total && result >= 0) {
      document.form1.use_point.value = result;
      // ボタン活性確認
      point_up_down_check(result);
    }
  }
}

//===================================================================
// アップダウンボタン活性チェック
//===================================================================
function point_up_down_check(result) {
  var effective_point = document.form1.effective_point.value;
  var price_total = document.form1.price_total.value;
  var point_unit = document.form1.point_unit.value;
  var result_up = Number(result) + Number(point_unit);
  var result_down = Number(result) - Number(point_unit);
  // アップボタンの確認
  if (result_up > effective_point || result_up > price_total) {
    document.form1.btnUp.src = img_u_off;
    document.form1.btnUp.style.cursor = "default";
  }
  else {
    document.form1.btnUp.src = img_u_on;
    document.form1.btnUp.style.cursor = "pointer";
  }
  // ダウンボタンの確認
  if (result_down < 0) {
    document.form1.btnDown.src = img_d_off;
    document.form1.btnDown.style.cursor = "default";
  }
  else {
    document.form1.btnDown.src = img_d_on;
    document.form1.btnDown.style.cursor = "pointer";
  }
}