function calc(){
    if (!(Acheck() && Bcheck() && Icheck() && YMcheck())){
    return;
    }

    var Ra = document.kariire.PayM.value;
    var Rb = document.kariire.PayB.value;
    var Rc = document.kariire.Riritu.value / 100;
    var Rz = document.kariire.Riritu.value;
    var Wa = document.kariire.Nensyu.value;
    var Yy = document.kariire.YY.selectedIndex;	
    var Mm = document.kariire.MM.selectedIndex;	
    var Nn = Math.floor(Yy * 12 + Mm);	
		var Bn = Math.floor(Nn / 6);
    var Bk = Math.round((Rb * Math.pow((1 + Rc / 2),Bn)-Rb) / (Rc / 2 * Math.pow((1 + Rc / 2),Bn)));	
    var Mk = Math.round((Ra * Math.pow((1 + Rc / 12),Nn)-Ra) / (Rc / 12 * Math.pow((1 + Rc / 12),Nn)));	
    var Py = Math.floor(Ra *12 + Rb * 2);
    var Am = Math.floor(Bk + Mk);
    var all = Math.ceil(Ra * Nn + Rb * Bn);
    var Wb =(Py / Wa) * 100;
	
	
	

    document.kariire.Amount.value = Math.floor(Am);
    document.kariire.AmBo.value = Math.floor(Bk);
    document.kariire.Msuu.value = Math.floor(Nn);
    document.kariire.Bsuu.value = Math.floor(Bn);
    document.kariire.PayY.value = Math.floor(Py);
    document.kariire.PayALL.value = Math.floor(all);
    document.kariire.Futan.value = Math.floor(Wb);

    document.kariire.Amount1.value = Math.floor(Yy);
    document.kariire.Amount6.value = Math.floor(Mm);
    document.kariire.Amount2.value =(Ra);
    document.kariire.Amount3.value =(Rb);
    document.kariire.Amount4.value =(Rz);	
    document.kariire.Amount5.value = Math.floor(Wa);


}

function ClearIP(){
    document.kariire.PayM.value = "";
    document.kariire.PayB.value = "";
    document.kariire.Riritu.value = "";
    document.kariire.YY.selectedIndex = 0;
    document.kariire.MM.selectedIndex = 0;
    document.kariire.PayM.focus();
}

function ClearOP(){
    document.kariire.Amount.value = "";
    document.kariire.AmBo.value = "";
    document.kariire.Msuu.value = "";
    document.kariire.Bsuu.value = "";
    document.kariire.PayY.value = "";
    document.kariire.PayALL.value = "";
}

function NumCheck(n){
    var i = 0;
    for (i = 0; i < n.length; i++){
        var s = n.substring(i, i + 1);
        if (s == "0"  ||  s == "1" ||  s == "2" || s == "3" || s == "4" || s == "5" || s == "6" || s == "7" || s == "8" || s == "9" || s == "."){
            continue;
        }
        else{
            return false;
        }
    }
    return true;
}

function Acheck(){
    var maitsuki = document.kariire.PayM.value;
    if (maitsuki== ""){
        alert("毎月支払額を入力してください");
        document.kariire.PayM.focus();
        return false;
    }


    if (!NumCheck(maitsuki) || maitsuki < 1 || maitsuki > 99){
        alert("毎月支払額には1～99までの整数を入力してください");
        document.kariire.PayM.focus();
        return false;
    }
    return true;
}

function Bcheck(){
    var bonus = document.kariire.PayB.value;
    if (bonus == ""){
        alert("ボーナス加算額を入力してください");
        document.kariire.PayB.focus();
        return false;
    }

    if (!NumCheck(bonus) || bonus < 0 || bonus > 999999999){
        alert("ボーナス加算額には0～999999999までの整数を入力してください");
        document.kariire.PayB.focus();
        return false;
    }
    return true;
}    

function Icheck(){
    var rate = document.kariire.Riritu.value;
    if (rate == ""){
        alert("借入利率を入力してください");
        document.kariire.Riritu.focus();
        return false;
    }

    if (!NumCheck(rate) || rate < 0.001 || rate > 20.000){
        alert("借入利率を0.001～20.000%の範囲で入力してください");
        document.kariire.Riritu.focus();
        return false;
    }
    return true;
}    

function YMcheck(){
    var year = document.kariire.YY.selectedIndex;
    var month = document.kariire.MM.selectedIndex;
    if (year == 0){
        alert("ご返済期間は1年0ヶ月～35年0ヶ月の範囲で入力してください");
        document.kariire.YY.focus();
        return false;
    }


    if (year == 35 && month != 0){
        alert("ご返済期間は1年0ヶ月～35年0ヶ月の範囲で入力してください");
        document.kariire.MM.focus();
        return false;
    }
    return true;
}

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

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_nbGroup(event, grpName) { //v6.0
  var i,img,nbArr,args=MM_nbGroup.arguments;
  if (event == "init" && args.length > 2) {
    if ((img = MM_findObj(args[2])) != null && !img.MM_init) {
      img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
      nbArr[nbArr.length] = img;
      for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
        if (!img.MM_up) img.MM_up = img.src;
        img.src = img.MM_dn = args[i+1];
        nbArr[nbArr.length] = img;
    } }
  } else if (event == "over") {
    document.MM_nbOver = nbArr = new Array();

    for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = (img.MM_dn && args[i+2]) ? args[i+2] : ((args[i+1])? args[i+1] : img.MM_up);
      nbArr[nbArr.length] = img;
    }
  } else if (event == "out" ) {
    for (i=0; i < document.MM_nbOver.length; i++) {
      img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; }
  } else if (event == "down") {
    nbArr = document[grpName];
    if (nbArr)
      for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }
    document[grpName] = nbArr = new Array();
    for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = img.MM_dn = (args[i+1])? args[i+1] : img.MM_up;
      nbArr[nbArr.length] = img;
  } }
}