function save(){
  var manager = new CookieManager();
  manager.setCookie("estate_price", document.frm.price.value*10000);
  manager.setCookie("estate_income", document.frm.income.value*10000);
  manager.setCookie("estate_vacancy", document.frm.vacancy.value/100);
  manager.setCookie("estate_cost", document.frm.cost.value/100);
  manager.setCookie("estate_own_fund", document.frm.own_fund.value*10000);
  manager.setCookie("estate_debt_amount", document.frm.debt_amount.value*10000);
  manager.setCookie("estate_debt_period", document.frm.debt_period.value);
  manager.setCookie("estate_debt_interest", document.frm.debt_interest.value/100);
}

function open_result(){
  save();
  window.open("result.html","result","width=640 height=550");
}

function update_debt_amount()
{
  var p = parseInt(document.frm.price.value);
  var f = parseInt(document.frm.own_fund.value);
  if (p > 0 && f > 0)
  {
    document.frm.debt_amount.value = p - f;
  }
}

function select(name)
{
  str = '<select name="'+name+'">';
  for (i = 3; i < 40 ; i++){
    if (i == 10) str += '<option value='+i+' selected="true">'+i+'</option>';
    else str += '<option value='+i+'>'+i+'</option>';
  }
  str += '</select>';
  return str;
}

document.write('<form name="frm" class="calc-input">');
document.write('<div class="calc-header">不動産利回り計算</div>');
document.write('<dl>');
document.write('<dt>物件価格:</dt>');
document.write('<dd><input name="price" value="4000" onblur="update_debt_amount()" size="10"/>万円</dd>');
document.write('<dt>年間の家賃収入(満室時):</dt>');
document.write('<dd><input name="income" value="800" size="10"/>万円</dd>');
document.write('<dt>空室率:</dt>');
document.write('<dd><input name="vacancy" value="10" size="10"/>%</dd>');
document.write('<dt>諸経費率:</dt>');
document.write('<dd><input name="cost" value="15" size="10"/>%</dd>');
document.write('<dt>自己資金:</dt>');
document.write('<dd><input name="own_fund" value="500" onblur="update_debt_amount()" size="10"/>万円</dd>');
document.write('<dt>借入金額(物件価格−自己資金):</dt>');
document.write('<dd><input name="debt_amount" disabled="true" size="10"/>万円</dd>');
document.write('<dt>借入期間:</dt>');
document.write('<dd>'+select('debt_period')+'年</dd>');
document.write('<dt>借入年利:</dt>');
document.write('<dd><input name="debt_interest" value="3.2" size="10"/>%</dd>');
document.write('</dl>');
document.write('<div class="calc-button">');
document.write('<input type="button" value="計算" size="12" onclick="open_result();" />');
document.write('</div>');
document.write('</form>');

update_debt_amount();