//验证是否为数字
function isNum(str){
 if (str.length==0){return false;}
 var Letters = "1234567890.";

 for (i=0;i<str.length;i++){
  var CheckChar = str.charAt(i);
  if (Letters.indexOf(CheckChar) == -1){return false;}
 }
 return true;
}

//规范数字
function fixNum(num,roundNum){
 if(isNum(num)){
  var val = parseInt(Math.pow(10,roundNum));
  num = Math.round(num * val)/val; 
 }else{
  num = 0; 
 }
 return parseFloat(num);
}

//等额本息界面控制
function Dx_showCalcTypeInfo(){
 var obj0 = document.getElementById('rbt_dx_calcType0');
 var obj1 = document.getElementById('rbt_dx_calcType1');
 var obj2 = document.getElementById('rbt_dx_calcType2');
 var obj3 = document.getElementById('aaa_dx_calcTypeInfo0');
 var obj4 = document.getElementById('aaa_dx_calcTypeInfo1');
 var obj5 = document.getElementById('aaa_dx_calcTypeInfo2');
 var obj6 = document.getElementById('aaafangchan_dx_totalPrice');

 if(obj0.checked){
  obj3.style.display = '';
  obj4.style.display = 'none';
  obj5.style.display = 'none';
 }
 if(obj1.checked){
  obj3.style.display = 'none';
  obj4.style.display = '';
  obj5.style.display = 'none'; 
 }
 if(obj2.checked){
  obj3.style.display = 'none';
  obj4.style.display = 'none';
  obj5.style.display = '';
  obj6.value = 0; 
 } 
}

function Dx_ChangeLoanType(){
 var obj1 = document.getElementById('fk_dx_LoanType');
 var obj2 = document.getElementById('aaa_dx_loanInfo');
 if(obj1.selectedIndex<2){
  obj2.style.display = 'none'; 
 }else{
  obj2.style.display = ''; 
 } 
}

//等额本金界面控制
function Dj_showCalcTypeInfo(){
 var obj1 = document.getElementById('rbt_dj_calcType1');
 var obj2 = document.getElementById('rbt_dj_calcType2');
 var obj3 = document.getElementById('aaa_dj_calcTypeInfo1');
 var obj4 = document.getElementById('aaa_dj_calcTypeInfo2');
 var obj5 = document.getElementById('aaafangchan_dj_totalPrice');

 if(obj1.checked){
  obj3.style.display = '';
  obj4.style.display = 'none'; 
 }
 if(obj2.checked){
  obj3.style.display = 'none';
  obj4.style.display = '';
  obj5.value = 0; 
 } 
}

function Dj_ChangeLoanType(){
 var obj1 = document.getElementById('fk_dj_LoanType');
 var obj2 = document.getElementById('aaa_dj_loanInfo');
 if(obj1.selectedIndex<2){
  obj2.style.display = 'none'; 
 }else{
  obj2.style.display = ''; 
 } 
}