window.onload = function() {
   mlradioinsObj = document.getElementById("mlradioins");
   mlradiodelObj = document.getElementById("mlradiodel");
   mailadrObj = document.getElementById("mailadr");
}

function mladrchk(){

   if (mailadrObj.value == "") {
      mailadrObj.style.color = "red";
      mailadrObj.value = "メールアドレスを入力してください。";
      return 0;
   }
   if (mlradioinsObj.checked){
      rbstatus = "ins";
   }else if(mlradiodelObj.checked){
      rbstatus = "del";
   }

   try {
      xmlReq = new ActiveXObject("Microsoft.XMLHTTP");
   }
   catch(e) {
      xmlReq = new XMLHttpRequest();
   }

   xmlReq.onreadystatechange = function() {
      if (xmlReq.readyState == 4) {
         //受信完了
         if (xmlReq.status == 200) {
            //正常終了
            //リロード
            res = xmlReq.responseText;
            if (res.length < 100){
               mailadrObj.value = res;
               mailadrObj.style.color = "red";
               return 0;
            }
            if (rbstatus == "ins") {
               alert("「" + mailadrObj.value + "」を登録しました。");
            }else{
               alert("「" + mailadrObj.value + "」の登録を解除しました。\nご購読ありがとうございました。");
            }
            return 0;
         }else {
            return 0;
         }
      }
      else {
      }
   }

   xmlReq.open("POST","mailaddreg.php",true);
   xmlReq.setRequestHeader("content-type", "application/x-www-form-urlencoded;charset=UTF-8");
   xmlReq.send("status=" + rbstatus + "&mailaddress=" + mailadrObj.value);
}

function mailadrclear() {
   mailadrObj.value = "";
   mailadrObj.style.color = "black";
}