var havedo=false;
function sf_GetAmount(){
 var val = 0;
 var obj = document.getElementById('aaafangchan_sf_amount');
 if(isNum(obj.value)){
  val = obj.value * 10000;
 }
 return val; 
}

function sf_GetArea(){
 var val = 0;
 var obj = document.getElementById('aaafangchan_sf_area');
 if(isNum(obj.value)){
  val = obj.value;
 }
 return val;
}

function sf_GetLoanType(){
 var obj = document.getElementById('fk_sf_LoanType');
 return obj.value; 
}

function sf_GetHouseType(){
 var obj = document.getElementsByName("rad_sf_houseType");
 if(obj[0].checked){
  return 1; 
 }else{
  return 2; 
 } 
}
function sf_GetQiShui(){
 var obj = document.getElementById("qishuitxt");
 return obj.value; 
}
function sf_ReturnQiShui(){
	 var qsRate = 0;
 var obj = document.getElementById("qishuitxt");
 var houseArea = sf_GetArea();
 var houseType = sf_GetHouseType();
  if(houseType == 2){
  qsRate = 3;  
 }else{
  qsRate = 1.5;
   if(houseArea<= 90)
  qsRate = 1; 
 }
 obj.value=qsRate;
 if(havedo)
 sf_Calc();
 return qsRate; 
}
function sf_Calc(){
 var amount = sf_GetAmount();
 var houseArea = sf_GetArea();
 var loanType = sf_GetLoanType();
 var houseType = sf_GetHouseType();
 var qsRate = sf_GetQiShui();
 
 var sf_new_qs = Math.round(amount * qsRate )/100;
 var sf_sec_qs = Math.round(amount * qsRate )/100;
 
 var sf_new_htyhs = Math.round(amount * 0.03 ) /100;
 var sf_sec_htyhs = Math.round(amount * 0.03 ) /100;
 if(document.getElementById('yhfree').checked== true)
  sf_new_htyhs=0;
 var sf_new_djf = 200;
 var sf_sec_djf = 200;
 if(loanType == 1){
  sf_new_djf = 100;
  sf_sec_djf = 100;
 }
 
 var sf_new_qzyhs = 5;
 var sf_sec_qzyhs = 5;
 if(document.getElementById('yhfree').checked== true)
 sf_new_qzyhs = 0;
 //var sf_new_jysxf = 0;
 var sf_new_jysxf = Math.round(houseArea * 5 * 100 / 2)/100 ;
 
 document.getElementById('aaafangchan_sf_new_qs').value = sf_new_qs;
 document.getElementById('aaafangchan_sf_new_htyhs').value = sf_new_htyhs;
 document.getElementById('aaafangchan_sf_new_djf').value = sf_new_djf;
 document.getElementById('aaafangchan_sf_new_qzyhs').value = sf_new_qzyhs;
 document.getElementById('aaafangchan_sf_new_jysxf').value = sf_new_jysxf;
 document.getElementById('aaafangchan_sf_new_total').value = sf_new_qs + sf_new_htyhs + sf_new_djf + sf_new_qzyhs + sf_new_jysxf;
 
// document.getElementById('aaafangchan_sf_sec_qs').value = sf_sec_qs;
// document.getElementById('aaafangchan_sf_sec_htyhs').value = sf_sec_htyhs;
// document.getElementById('aaafangchan_sf_sec_djf').value = sf_sec_djf;
// document.getElementById('aaafangchan_sf_sec_qzyhs').value = sf_sec_qzyhs;
// document.getElementById('aaafangchan_sf_sec_jysxf').value = sf_sec_jysxf;
// document.getElementById('aaafangchan_sf_sec_total').value = sf_sec_qs + sf_sec_htyhs + sf_sec_djf + sf_sec_qzyhs + sf_sec_jysxf;
havedo=true;
}