// JavaScript Document
function OP()
{
var afs=0.000;
if (document.calc1.dj.value == ""){
 alert("请填写“单价”。");
 return;
 }
if (document.calc1.mj.value == ""){
 alert("请填写“房屋面积”。");
 return;
 }
if (document.calc1.fs.options[document.calc1.fs.selectedIndex].value == "a"){
 if (document.calc1.qx.options[document.calc1.qx.selectedIndex].value == "30"){
 afs=48.03024;
 }
 if (document.calc1.qx.options[document.calc1.qx.selectedIndex].value == "25"){
 afs=53.06015;
 }
 if (document.calc1.qx.options[document.calc1.qx.selectedIndex].value == "20"){
 afs=60.86182;
 }
 if (document.calc1.qx.options[document.calc1.qx.selectedIndex].value == "15"){
 afs=74.21960;
 }
 if (document.calc1.qx.options[document.calc1.qx.selectedIndex].value == "10"){
 afs=101.48294;
 }
 if (document.calc1.qx.options[document.calc1.qx.selectedIndex].value == "5"){
 afs=182.36563;
 }
 }
 else{
 if (document.calc1.qx.options[document.calc1.qx.selectedIndex].value == "30"){
 afs=53.92689;
 }
 if (document.calc1.qx.options[document.calc1.qx.selectedIndex].value == "25"){
 afs=58.69229;
 }
 if (document.calc1.qx.options[document.calc1.qx.selectedIndex].value == "20"){
 afs=66.21647;
 }
 if (document.calc1.qx.options[document.calc1.qx.selectedIndex].value == "15"){
 afs=79.28789;
 }
 if (document.calc1.qx.options[document.calc1.qx.selectedIndex].value == "10"){
 afs=106.26114;
 }
 if (document.calc1.qx.options[document.calc1.qx.selectedIndex].value == "5"){
 afs=187.66042;
 }
 }
document.calc1.op1.value = document.calc1.dj.value * document.calc1.mj.value;
document.calc1.op2.value = Math.ceil(document.calc1.dj.value * document.calc1.mj.value * document.calc1.bl.options[document.calc1.bl.selectedIndex].value);
document.calc1.op3.value = document.calc1.dj.value * document.calc1.mj.value - Math.ceil(document.calc1.dj.value * document.calc1.mj.value * document.calc1.bl.options[document.calc1.bl.selectedIndex].value);
document.calc1.op4.value = Math.ceil(document.calc1.dj.value * document.calc1.mj.value * document.calc1.bl.options[document.calc1.bl.selectedIndex].value) * afs / 10000;
}

function isEmpty(str)
{
 if(str==null) 
 return true;
 else
 if(str.length ==0)
 return true;
 else
 return false;
}

function Calculate_Fee()
{
 var fee_form = document.fee_form;
 
 var house_price = fee_form.house_price.value;

 if(isEmpty(house_price))
 {
 alert("请输入总房价");
 return;
 }
 if(isNaN(house_price))
 {
 alert("总房价必须为数字");
 return;
 }

 if(house_price <= 0)
 {
 alert("总房价必须大于0");
 return;
 }

 var govenment_fee_rate,hand_fee_rate,bond_fee_rate,favourable_govenment_fee_rate;
 var govenment_fee,hand_fee,bond_fee,favourable_govenment_fee;
 govenment_fee_rate = 0.015;
 hand_fee_rate = 0.0004;
 bond_fee_rate = 0.0003;
 favourable_govenment_fee_rate=0.0075;
// house_price = fee_form.house_price.value;
 
 govenment_fee = parseInt(house_price * govenment_fee_rate * 100)/100;
 hand_fee = parseInt(house_price * hand_fee_rate * 100)/100;
 bond_fee = parseInt(house_price * bond_fee_rate * 100)/100;
 favourable_govenment_fee=parseInt(house_price * favourable_govenment_fee_rate * 100)/100;
 
 fee_form.govenment_fee.value = govenment_fee;
 fee_form.hand_fee.value = hand_fee;
 fee_form.bond_fee.value = bond_fee;
 fee_form.sum_fee.value = govenment_fee + hand_fee + bond_fee + 100 + 5;
 
 fee_form.favourable_govenment_fee.value = favourable_govenment_fee;
 fee_form.favourable_sum_fee.value = favourable_govenment_fee + hand_fee + bond_fee + 100 + 5;

 fee_form.favourable_sum_fee2.value = hand_fee + bond_fee + 100 + 5;

}

function Reset_Fee_Form()
{
 document.fee_form.house_price.value = "";
 document.fee_form.govenment_fee.value = "";
 document.fee_form.hand_fee.value = "";
 document.fee_form.bond_fee.value = "";
 document.fee_form.sum_fee.value = "";
 document.fee_form.favourable_govenment_fee.value = "";
 document.fee_form.favourable_sum_fee.value = "";

 document.fee_form.favourable_sum_fee2.value = ""; 
}