var mortgage = {
	init:function(){
		$("#calculate").bind({
			"click":function(){
				mortgage.displayBasic();
			}
		});
	},
	dataArr:[],
	displayBasic:function(){
		if(mortgage.formCheck())
		{
			var monthlyPayment  = removeLeadZero(document.calculator.monthlyPayment.value, false, false);  
            var repaymentPeriod = removeLeadZero(document.calculator.repaymentPeriod.value, false, false);
            var interestRate    = document.calculator.interestRate.value;
            
            var monthlyInterest = interestRate / 12.00 / 100.00; 
            var var1            = raiseP(( 1 + monthlyInterest), repaymentPeriod);
            
            var result  = (monthlyPayment / monthlyInterest *  (1-1/ var1 )*100.00 )/100.00;
            
            $("#monthlyPaymentResult").html(commaSplit( round(monthlyPayment, 2) ));
            $("#repaymentPeriodResult").html(commaSplit( repaymentPeriod ));
            $("#interestRateResult").html(commaSplit( interestRate ));
            
            result = "" + result;
            dec = result.indexOf(".");
            if (dec > 0)
            {
                dollars = result.substring(0,dec);
                cents = result.substring(dec+1,dec+3);
                cents = (cents.length < 2) ? cents + "0" : cents;
                result = dollars + "." + cents;
            } else {
                result = dollars + ".00" ;
            }
			
			
            $("#PrincipleLoanAmountResult").html(commaSplit(result) );
		}
	},
	calInstallment:function(a, r, n) {
		return ( (r * a * Math.pow(1 + r, n)) / ( Math.pow(1 + r, n) - 1) )
	},
	calInstallmentNum:function(a, r, instal) {
		return Math.log10(instal / (instal - (r * a))) / Math.log10(1 + r);
	},
	calAccInterest:function(a, r, instal, instalnum) {
		return (instal * (instalnum -1)) + ( Math.pow((1 + r), instalnum) * (a - (instal / r)) ) + ( (1 + r) * instal / r ) - a;
	},
	genTable:function(arr){
		var tempTable = "";

		tempTable += "<table>";
		tempTable += "<tr>";
		tempTable += '<th class="col1">'+mortgageDisplayText.Term[lang]+'</th>';
		tempTable += '<th class="col2">'+mortgageDisplayText.Instalment[lang]+"</th>";
		tempTable += '<th class="col3">'+mortgageDisplayText.InterestPayment[lang]+"</th>";
		tempTable += '<th class="col4">'+mortgageDisplayText.PrincipalRepayment[lang]+"</th>";
		tempTable += '<th class="col5">'+mortgageDisplayText.OutstandingBalance[lang]+"</th>";
		tempTable += "</tr>";

		for(i=0;i<arr.length;i++)
		{
			tempTable += "<tr>";
			tempTable += "<td class=\"colorDark\">"+(i+1)+"</td>";
			for(j=0;j<arr[i].length;j++)
				tempTable += "<td>HK$ "+arr[i][j]+"</td>";
			tempTable += "</tr>";
		}

		tempTable += "</table>";
		return tempTable;
	},
	formCheck:function(){
		var check = true;
		var errorText = "";

		
		var paramArray = new Array(); 
        var strErrMsg = "";
            
        if (document.calculator.monthlyPayment.value) {
            paramArray[paramArray.length] = new Array("monthlyPayment", mortgageDisplayText.InvalidRepaymentAmountRange[lang], "MA"); 
        } else {
		    strErrMsg += mortgageDisplayText.InputMonthlyRepaymentAmount[lang]+"\n";
        }
        
		if (document.calculator.repaymentPeriod.value) {
			paramArray[paramArray.length] = new Array("repaymentPeriod", mortgageDisplayText.InvalidRepaymentPeriod[lang], "MA");
		} else {
			strErrMsg += mortgageDisplayText.InputRepaymentPeriod[lang]+"\n";
		}
		 
        if (document.calculator.interestRate.value) {
			paramArray[paramArray.length] = new Array("interestRate", mortgageDisplayText.InvalidInterestRate[lang], "MN");
		} else {
            strErrMsg += mortgageDisplayText.InputInterestRate[lang]+"\n";
		}
		
		strErrMsg += TextValidateNoTemplate(document.calculator,paramArray);
		
		if(strErrMsg == '')
		{
					
			var repayCheck = document.calculator.repaymentPeriod.value;
			var monthlyPayment  = removeLeadZero(document.calculator.monthlyPayment.value, false, false); 
			var repaymentPeriod = removeLeadZero(document.calculator.repaymentPeriod.value, false, false);
			var interestRate    = document.calculator.interestRate.value;

			if (interestRate > 100 || interestRate <= 0)
			{
				strErrMsg += mortgageDisplayText.InvalidInterestRateRange[lang]+"\n";
				check = false;
			} 
				
			if (parseInt(repayCheck, 10) == 'NaN' || parseInt(repayCheck, 10) <= 0 || parseInt(repayCheck, 10) > 999) {
				strErrMsg += mortgageDisplayText.InvalidRepaymentPeriodRange[lang]+"\n";
				check = false;
			}
		}

		if(strErrMsg != '')
		{
			alert( strErrMsg );
			check = false;
		}
				
		return check;
	}
}

var mortgageDisplayText = {
	index:function(){
		if(lang=="tc")
			$("#header").html('<div class="topBanner"><img src="images/mortgage_afford_banner_tc.png"></div>');
		else if(lang=="sc")
			$("#header").html('<div class="topBanner"><img src="images/mortgage_afford_banner_sc.png"></div>');
		else
			$("#header").html('<div class="topBanner"><img src="images/mortgage_afford_banner.png"></div>');

		$(".MonthlyPaymentAmount").text(mortgageDisplayText.MonthlyRepaymentAmount[lang]);
		$(".RateOfInterest").text(mortgageDisplayText.RateOfInterest[lang]);
		$(".RepaymentPeriod").text(mortgageDisplayText.RepaymentPeriod[lang]);
		$("#RateEnquiry").html('<a href="'+mortgageDisplayText.RateEnquiryLink[lang]+'" target="_blank">'+mortgageDisplayText.RateEnquiry[lang]+'</a>')
		$("#calculate").val(mortgageDisplayText.Calculate[lang]);
		$("#clear").val(mortgageDisplayText.Clear[lang]);

		$(".CalculationResult").text(mortgageDisplayText.CalculationResult[lang]);
		$("#YourInput").text(mortgageDisplayText.YourInput[lang]);

		$("#PrincipleLoanAmount").text(mortgageDisplayText.PrincipleLoanAmount[lang]);
		
		if(lang=="en")
			$("#MakeAppointment").html('<a href="'+mortgageDisplayText.MakeAppointmentLink[lang]+'" target="_blank" class="btn2 multline">'+mortgageDisplayText.MakeAppointment[lang]+'</a>')
		else
			$("#MakeAppointment").html('<a href="'+mortgageDisplayText.MakeAppointmentLink[lang]+'" target="_blank" class="btn2">'+mortgageDisplayText.MakeAppointment[lang]+'</a>')
		$("#InstantPropertyValuation").html('<a href="'+mortgageDisplayText.InstantPropertyValuationLink[lang]+'" target="_blank" class="btn2">'+mortgageDisplayText.InstantPropertyValuation[lang]+'</a>')
		$("#CloseBtn").html('<a href="'+mortgageDisplayText.CloseBtnLink[lang]+'" class="btn2">'+mortgageDisplayText.CloseBtn[lang]+'</a>')
		$("#note1").text(mortgageDisplayText.note1[lang]);
		$("#note2").text(mortgageDisplayText.note2[lang]);
	},
	detail:function(){
		$("#PrincipleLoanAmount").text(mortgageDisplayText.PrincipleLoanAmount[lang]);
		$("#RateOfInterest").text(mortgageDisplayText.RateOfInterest[lang]);
		$("#RepaymentPeriod").text(mortgageDisplayText.RepaymentPeriod[lang]);
		$("#calculate").val(mortgageDisplayText.Calculate[lang]);
		$("#clear").val(mortgageDisplayText.Clear[lang]);

		$("#note3").text(mortgageDisplayText.note3[lang]);
	},
	RateEnquiry:{
		"en":"Rate Enquiry",
		"tc":"查詢利率",
		"sc":"查询利率"
	},
	RateEnquiryLink:{
		"en":"https://www.cncbinternational.com/rate-table/init_rate_en.html",
		"tc":"https://www.cncbinternational.com/rate-table/init_rate_tc.html",
		"sc":"https://www.cncbinternational.com/rate-table/init_rate_sc.html"
	},
	RateEnquiryLink_HKCBF:{
		"en":"#",
		"tc":"#",
		"sc":"#"
	},
	Calculate:{
		"en":"Calculate",
		"tc":"計算",
		"sc":"计算"
	},
	Clear:{
		"en":"Clear",
		"tc":"重新輸入",
		"sc":"重新输入"
	},
	CalculationResult:{
		"en":"Calculation Result",
		"tc":"計算結果",
		"sc":"计算结果"
	},
	YourInput:{
		"en":"Your Input",
		"tc":"你的資料",
		"sc":"你的资料"
	},
	MonthlyRepaymentAmount:{
		"en":"Monthly Repayment Amount (HKD)",
		"tc":"每月供款額 (港幣)",
		"sc":"每月供款额 (港币)"
	},
	PrincipleLoanAmount:{
		"en":"Principal Loan Amount (HKD)",
		"tc":"貸款額 (港幣)",
		"sc":"贷款额 (港币)"
	},
	RateOfInterest:{
		"en":"Expected Annual Interest Rate (%) ",
		"tc":"預期貸款年利率 (%)",
		"sc":"预期贷款年利率 (%)"
	},
	Year:{
		"en":"Year",
		"tc":"",
		"sc":""
	},
	RepaymentPeriod:{
		"en":"Repayment Period (Months)",
		"tc":"還款期 (月)",
		"sc":"还款期 (月)"
	},
	Term:{
		"en":"No. of Installment",
		"tc":"期數",
		"sc":"期数"
	},
	MonthlyPaymentMethod:{
		"en":"Monthly Payment Method",
		"tc":"每月供款方法",
		"sc":"每月供款方法"
	},
	BiWeeklyPaymentMethod:{
		"en":"Bi Weekly Payment Method",
		"tc":"每兩星期供款方法",
		"sc":"每两星期供款方法"
	},
	InstallmentAmount:{
		"en":"Installment Amount (HKD)",
		"tc":"供款金額 (港幣)",
		"sc":"供款金额 (港币)"
	},
	ActualNumberOfInstallments:{
		"en":"Actual number of installments",
		"tc":"實際供款期數",
		"sc":"实际供款期数"
	},
	EffectiveRepaymentPeriodMonths:{
		"en":"Effective Repayment Period (months)",
		"tc":"實際供款年期 (月)",
		"sc":"实际供款年期 (月)"
	},
	EffectiveRepaymentPeriodYears:{
		"en":"Effective Repayment Period (years)",
		"tc":"實際供款年期 (年)",
		"sc":"实际供款年期 (年)"
	},
	TotalInterestPaid:{
		"en":"Total Interest Paid (HKD)",
		"tc":"總利息支出 (港幣)",
		"sc":"总利息支出 (港币)"
	},
	OpeningBalance:{
		"en":"Opening Balance<br>(HKD)",
		"tc":"",
		"sc":""
	},
	Instalment:{
		"en":"Repayment Amount",
		"tc":"供款金額",
		"sc":"供款金额"
	},
	InterestPayment:{
		"en":"Interest",
		"tc":"利息",
		"sc":"利息"
	},
	PrincipalRepayment:{
		"en":"Principal",
		"tc":"本金",
		"sc":"本金"
	},
	OutstandingBalance:{
		"en":"Outstanding Balance",
		"tc":"本金餘額",
		"sc":"本金余额"
	},
	RepaymentSchedule:{
		"en":"Repayment Schedule",
		"tc":"還款表",
		"sc":"还款表"
	},
	MakeAppointment:{
		"en":"Make Appointment with Mortgage Specialist",
		"tc":"預約按揭顧問",
		"sc":"预约按揭顾问"
	},
	MakeAppointmentLink:{
		"en":"https://www.cncbinternational.com/cms/onlineapp/mortgageapptform/en/index.html",
		"tc":"https://www.cncbinternational.com/cms/onlineapp/mortgageapptform/tc/index.html",
		"sc":"https://www.cncbinternational.com/cms/onlineapp/mortgageapptform/sc/index.html"
	},
	MakeAppointmentLink_HKCBF:{
		"en":"#",
		"tc":"#",
		"sc":"#"
	},
	InstantPropertyValuation:{
		"en":"Instant Property Valuation",
		"tc":"即時物業估價",
		"sc":"即时物业估价"
	},
	InstantPropertyValuationLink:{
		"en":"https://www.cncbinternational.com",
		"tc":"https://www.cncbinternational.com",
		"sc":"https://www.cncbinternational.com"
	},
	CloseBtn:{
		"en":"Close",
		"tc":"關閉",
		"sc":"关闭"
	},
	CloseBtnLink:{
		"en":"winclose.html",
		"tc":"winclose.html",
		"sc":"winclose.html"
	},
	note1:{
		"en":"*The above information is for reference only.",
		"tc":"* 以上資料只供參考",
		"sc":"* 以上资料只供参考。"
	},
	note2:{
		"en":"Should you have any enquiries, please call our Customer Service Hotline 2287 6788 for assistance.",
		"tc":"如有任何疑問，請致電本行客戶服務熱線 2287 6788 查詢。",
		"sc":"如有任何疑问，请致电本行客户服务热线 2287 6788 查询。"
	},
	note2_HKCBF:{
		"en":"Should you have any enquiries, please call our Customer Service Hotline 3603 3760 for assistance.",
		"tc":"如有任何疑問，請致電本行客戶服務熱線 3603 3760 查詢。",
		"sc":"如有任何疑问，请致电本行客户服务热线 3603 3760 查询。"
	},
	note3:{
		"en":"Note: The calculation is based on the information provided by customer and the calculator result is for reference only",
		"tc":"註: 以上的計算結果是根據客戶提供之資料計算及只供參考",
		"sc":"注: 以上的计算结果是根据客户提供之资料计算及只供参考"
	},
	InputMonthlyRepaymentAmount:{
		"en":"Please input the Monthly Repayment Amount",
		"tc":"請輸入每月供款額",
		"sc":"请输入每月供款额"
	},
	InputLoanAmount:{
		"en":"Please input the Loan Amount.",
		"tc":"請輸入貸款額。",
		"sc":"请输入贷款额。"
	},
	InputRepaymentPeriod:{
		"en":"Please input the Repayment Period.",
		"tc":"請輸入還款期。",
		"sc":"请输入还款期。"
	},
	InputInterestRate:{
		"en":"Please input the Interest Rate.",
		"tc":"請輸入年利率。",
		"sc":"请输入年利率。"
	},
	InvalidLoanAmount:{
		"en":"The amount you inputted is invalid. Please re-enter.",
		"tc":"你所輸入的貸款額不正確，請重新輸入。",
		"sc":"你所输入的贷款额不正确，请重新输入。"
	},
	InvalidRepaymentPeriod:{
		"en":"The period you inputted is invalid. Please re-enter.",
		"tc":"你所輸入的還款期不正確，請重新輸入。",
		"sc":"你所输入的还款期不正确，请重新输入。"
	},
	InvalidInterestRate:{
		"en":"The rate you inputted is invalid. Please re-enter.",
		"tc":"你所輸入的年利率不正確，請重新輸入。",
		"sc":"你所输入的年利率不正确，请重新输入。"
	},
	InvalidRepaymentAmountRange:{
		"en":"Monthly Repayment Amount must be between 1 to 999,999,999.",
		"tc":"每月供款额須在1至999,999,999內。",
		"sc":"每月供款额须在1至999,999,999内。"
	},

	InvalidRepaymentPeriodRange:{
		"en":"Repayment Period must be between 1 to 999.",
		"tc":"還款期數值須在1至999內。",
		"sc":"还款期数值须在1至999内。"
	},
	InvalidInterestRateRange:{
		"en":"Interest Rate must be between 0.01 to 99.99% .",
		"tc":"年利率數值須在0.01至99.99%內。",
		"sc":"年利率数值须在0.01至99.99%内。"
	}

}