var	c_f_ord					=	"fm_ord";
var	c_s_qty1				=	"s_qty1";
var	c_s_qty2				=	"s_qty2";
var	c_s_qty3				=	"s_qty3";
var c_tax_rate			=	"0.05";
var	c_i_qty					= "i_qty";
var c_i_tax					=	"i_tax";
var c_i_price_tot		=	"i_price_tot";
var c_i_price_sum		=	"i_price_sum";
var c_price_unit_clo= 23000;
var c_price_unit_sld= 18500;

function calc()
{
//数量
document.forms[c_f_ord].elements[c_i_qty].value 
= eval(document.forms[c_f_ord].elements[c_s_qty2].value) 
+ eval(document.forms[c_f_ord].elements[c_s_qty3].value);

//小計
document.forms[c_f_ord].elements[c_i_price_tot].value 
=(c_price_unit_clo * eval(document.forms[c_f_ord].elements[c_s_qty1].value)) +
(c_price_unit_sld * eval(document.forms[c_f_ord].elements[c_i_qty].value));

//税
document.forms[c_f_ord].elements[c_i_tax].value 
=
document.forms[c_f_ord].elements[c_i_price_tot].value 
*
0.05;
document.forms[c_f_ord].elements[c_i_tax].value 
=
mask_money(document.forms[c_f_ord].elements[c_i_tax].value,0)

//合計
document.forms[c_f_ord].elements[c_i_price_sum].value 
= eval(document.forms[c_f_ord].elements[c_i_price_tot].value)
+ eval(document.forms[c_f_ord].elements[c_i_tax].value);
}


function input_check()
{//必須項目の入力チェック
	name 	= document.fm_ord.ctm_name.value;
	zip	= document.fm_ord.ctm_zip.value;
	address	= document.fm_ord.ctm_add.value;
	phone	= document.fm_ord.ctm_phone.value;
	mail 	= document.fm_ord.ctm_mail.value;

	if(name == ""||address == ""||phone == ""||mail == ""||zip == "")
	{
		alert("お届け先情報を全て入力してください");
		document.fm_ord.ctm_name.focus();
		return false;
	}
}
function mask_money(amount,Keta)
{//左寄せ
	Atai=1;
	for(i=0;i<Keta; i++)Atai=Atai*10;
	amount=Math.floor(Math.round(amount*Atai));
	amount/=Atai;
	return amount;
}
function mask_keta(x)
{//桁
	var s = "" + x;
  var p = s.indexOf(".");
  if (p < 0)
	{
  	p = s.length;
  }
  var r = s.substring(p, s.length);
  for (var i = 0; i < p; i++)
	{
  	var c = s.substring(p - 1 - i, p - 1 - i + 1);
    if (c < "0" || c > "9")
		{
    	r = s.substring(0, p - i) + r;
      break;
    }
    if (i > 0 && i % 3 == 0)
		{
	    r = "," + r;
    }
  	  r = c + r;
    }
	return r;
}

function w_open(w_no)
{
	w_name=w_no+".html";

	window.open(w_name,"sample","width=410,height=340,scrollbars=no,location=no,menubar=no,left=10,top=30");
}