function checkfwmj(elem,elemjg,elemfd,elemcs)
{
  var checkOK = ".0123456789";
  var checkStr = elem.value;
  var allValid = true;
  var decPoints = 0;
  var allNum = "";
  var fwjg = elemjg.value;
  var yhfd = elemfd.value;
  var ajcs = elemcs.value;
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      allValid = false;
      break;
    }
  }
  if (!allValid)
  {
    alert("房屋面积只能输入数字(含小数)。");
    elem.focus();
    return (false);
  }
  if (fwjg>0&yhfd>0)
  {
  document.estateborrow.fwze.value=fwjg*checkStr*yhfd/100;
  document.estateborrow.original.value=fwjg*checkStr*yhfd*ajcs/10000;
  }
  return (true);
}

function checkfwjg(elem,elemmj,elemfd,elemcs)
{
  var checkOK = ".0123456789";
  var checkStr = elem.value;
  var allValid = true;
  var decPoints = 0;
  var allNum = "";
  var fwmj = elemmj.value;
  var yhfd = elemfd.value;
  var ajcs = elemcs.value;
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      allValid = false;
      break;
    }
  }
  if (!allValid)
  {
    alert("房屋价格只能输入数字(含小数)。");
    elem.focus();
    return (false);
  }
  if (fwmj>0&yhfd>0)
  {
  document.estateborrow.fwze.value=fwmj*checkStr*yhfd/100;
  document.estateborrow.original.value=fwmj*checkStr*yhfd*ajcs/10000;
  }
  return (true);
}


function checkyhfd(elem,elemmj,elemjg,elemcs)
{
  var checkOK = ".0123456789";
  var checkStr = elem.value;
  var allValid = true;
  var decPoints = 0;
  var allNum = "";
  var fwjg = elemjg.value;
  var fwmj = elemmj.value;
  var ajcs = elemcs.value;
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      allValid = false;
      break;
    }
  }
  if (!allValid)
  {
    alert("优惠幅度只能输入数字(含小数)。");
    elem.focus();
    return (false);
  }
  if (fwmj>0&fwjg>0)
  {
  document.estateborrow.fwze.value=fwmj*checkStr*fwjg/100;
  document.estateborrow.original.value=fwmj*checkStr*fwjg*ajcs/10000;
  }
  return (true);
}

function checkfwze(elem,elemcs)
{
  var checkOK = ".0123456789";
  var checkStr = elem.value;
  var allValid = true;
  var decPoints = 0;
  var allNum = "";
  var ajcs = elemcs.value;
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      allValid = false;
      break;
    }
  }
  if (!allValid)
  {
    alert("房屋总额只能输入数字(含小数)。");
    elem.focus();
    return (false);
  }
  if (checkStr>0)
  {
  document.estateborrow.original.value=checkStr*ajcs/100;
  }
  return (true);
}

function checkajcs(elem,elemze)
{
  var checkOK = "0123456789";
  var checkStr = elem.value;
  var allValid = true;
  var decPoints = 0;
  var allNum = "";
  var fwze = elemze.value;
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      allValid = false;
      break;
    }
  }
  if (!allValid)
  {
    alert("按揭成数只能输入数字。");
    elem.focus();
    return (false);
  }
  if (fwze>0)
  {
  document.estateborrow.original.value=checkStr*fwze/100;
  }
  return (true);
}

function checkdkzl(elem,elemys)
{
  var checkStr = elem.value;
  var yearSpan = elemys.value;
  if (checkStr!=3&yearSpan==1)
  {
    alert("只有个人商业用户贷款期限可以为1年，请修改按揭年数。");
    document.estateborrow.yearSpan.focus();
    return (false);
  }
  if (checkStr==1)
  {
    if (yearSpan>5)
    {
    document.estateborrow.active.value=5.31;
    }
    if (yearSpan<6)
    {
    document.estateborrow.active.value=4.95;
    }
  }
  if (checkStr==2)
  {
    if (yearSpan>5)
    {
    document.estateborrow.active.value=4.23;
    }
    else
    {
    document.estateborrow.active.value=3.78;
    }
  }
  if (checkStr==3)
  {
    if (yearSpan==1)
    {
    document.estateborrow.active.value=5.31;
    }
    if (yearSpan>1&yearSpan<4)
    {
    document.estateborrow.active.value=5.49;
    }
    if (yearSpan>3&yearSpan<6)
    {
    document.estateborrow.active.value=5.58;
    }
    if (yearSpan>5&yearSpan<11)
    {
    document.estateborrow.active.value=5.76;
    }
    if (yearSpan>10)
    {
    alert("个人商业用房贷款期限不能超过10年。");
    document.estateborrow.yearSpan.focus();
    return (false);
    }
  }
  return (true);
}

function checkoriginal(elem)
{
  var checkOK = ".0123456789";
  var checkStr = elem.value;
  var allValid = true;
  var decPoints = 0;
  var allNum = "";
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      allValid = false;
      break;
    }
  }
  if (!allValid)
  {
    alert("贷款金额只能输入数字(含小数)。");
    elem.focus();
    return (false);
  }
  return (true);
}

function checkyearSpan(elem,elemzl)
{
  var checkOK = "0123456789";
  var checkStr = elem.value;
  var allValid = true;
  var decPoints = 0;
  var allNum = "";
  var dkzl = elemzl.value;
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      allValid = false;
      break;
    }
  }
  if (!allValid)
  {
    alert("详细期限只能输入数字。");
    elem.focus();
    return (false);
  }
  if (checkStr>30)
  {
    alert("贷款期限不能超过30年。");
    elem.focus();
    return (false);
  }
  if (checkStr==1&dkzl!=3)
  {
    alert("只有个人商业用户贷款期限可以为1年。");
    elem.focus();
    return (false);
  }
  if (checkStr>5)
  {
    if (dkzl==1)
    {
    document.estateborrow.active.value=5.04;
    }
    if (dkzl==2)
    {
    document.estateborrow.active.value=4.05;
    }
  }
  else
  {
    if (dkzl==1)
    {
    document.estateborrow.active.value=4.77;
    }
    if (dkzl==2)
    {
    document.estateborrow.active.value=3.6;
    }
  }
  if (dkzl==3)
  {
    if (checkStr==1)
    {
    document.estateborrow.active.value=5.31;
    }
    if (checkStr>1&checkStr<4)
    {
    document.estateborrow.active.value=5.49;
    }
    if (checkStr>3&checkStr<6)
    {
    document.estateborrow.active.value=5.58;
    }
    if (checkStr>5&checkStr<11)
    {
    document.estateborrow.active.value=5.76;
    }
    if (checkStr>10)
    {
    alert("个人商业用房贷款期限不能超过10年。");
    elem.focus();
    return (false);
    }
  }
  return (true);
}