function PopUpPrint () {
	var input_string = "";
	if (CalQualAmt()) {
		input_string = "loanqualifier_calc_displaycertificate_frame.asp";
		input_string = input_string + "?IncOne=" +  document.getElementById('qualify').IncOne.value;
		input_string = input_string + "&IncTwo=" +  document.getElementById('qualify').IncTwo.value;
		input_string = input_string + "&OthInc=" +  document.getElementById('qualify').OthInc.value;
		input_string = input_string + "&RentInc=" +  document.getElementById('qualify').RentInc.value;
		input_string = input_string + "&income1=" +  document.getElementById('qualify').income1.options[ document.getElementById('qualify').income1.selectedIndex].text;
		input_string = input_string + "&income2=" +  document.getElementById('qualify').income2.options[ document.getElementById('qualify').income2.selectedIndex].text;
		input_string = input_string + "&incomeother=" +  document.getElementById('qualify').incomeother.options[ document.getElementById('qualify').incomeother.selectedIndex].text;
		input_string = input_string + "&incomerental=" +  document.getElementById('qualify').incomerental.options[ document.getElementById('qualify').incomerental.selectedIndex].text;
		input_string = input_string + "&Applicants=" + returnRadioValue( document.getElementById('qualify').Applicants);
		input_string = input_string + "&HomeLoan=" +  document.getElementById('qualify').HomeLoan.value;
		input_string = input_string + "&OthLoan=" +  document.getElementById('qualify').OthLoan.value;
		input_string = input_string + "&CardLim=" +  document.getElementById('qualify').CardLim.value;
		input_string = input_string + "&NumbDep=" +  document.getElementById('qualify').NumbDep.value;
		input_string = input_string + "&IntRate=" +  document.getElementById('qualify').IntRate.value;
		input_string = input_string + "&TermYear=" +  document.getElementById('qualify').TermYear.value;
		input_string = input_string + "&TermMonth=" +  document.getElementById('qualify').TermMonth.value;
		input_string = input_string + "&LoanAmt=" +  document.getElementById('qualify').LoanAmt.value;
		input_string = input_string + "&loanType=" + returnRadioValue( document.getElementById('qualify').loanType);

		window.open(input_string,'certificate','width=640,height=600,scrollbars=yes,resizable=yes,screenX=0,screenY=0,left=0,top=0');
	}
}


function returnRadioValue(sFieldName) {
	var cFields = sFieldName;

	for (x = 0; x < cFields.length; x++) {
		if (cFields[x].checked) {
			return cFields[x].value;
			break;
		}
	}

	return null;
}


function checkEnter(pfield, pname) {
    var field = pfield.value
    var msg
    var status = true

    if (field.length == 0) {
        //msg = "The '" + pname + "' field must be entered."
        msg = "'" + pname + "' phải được nhập vào."
        alert(msg)
        status = false
    }

    return status
}

function checkNumberofApplicants(pfield, pname) {
    var field = returnRadioValue(pfield)
    var msg
    var status = true

    if ((field == 2) && ( document.getElementById('qualify').IncTwo.value.length==0)) {
        //msg = "You have entered Joint for the No. of Applicants. The Income 2 field must be entered."
        msg = "Bạn đã lựa chọn không liên kết với ứng viên. Bạn phải nhập vào lợi tức."
        alert(msg)
        status = false
    }

    if ((field == 1) && (ParseDollar( document.getElementById('qualify').IncTwo.value)>0)) {
        //msg = "You have entered Single for the No. of Applicants. The Income 2 field cannot be entered."
        msg = "Bạn đã lựa chọn không liên kết với ứng viên. Bạn phải nhập vào lợi tức."
        alert(msg)
        status = false
    }

    return status
}


function checkLoanType(pfield) {
    var field = returnRadioValue(pfield)
    var msg
    var status = true

    if (field == "Home") {
		 document.getElementById('qualify').IntRate.value = "8.16"
		ACF=10 // Account Keeping Fee
		fixedInterestRate = false    //sets the intrest rate text box to a free form box
        status = false
    }

    if (field == "Personal") {
         document.getElementById('qualify').IntRate.value = "12.95"
		ACF=0 // Account Keeping Fee
		fixedInterestRate = false  //sets the intrest rate text box to a free form box
        status = false
    }

    return status
}


function checkIfFixInterestRateApplies() {
	if (fixedInterestRate == true) {  // remove focus
		 document.getElementById('qualify').TermYear.focus();
	}
}


function checkNumb(pnumb, pname) {
    var numb = pnumb.value
    var message
    var indx
    var status = false

    if (numb.length == 0) {
        status = true
    }

    for (var indx = 0; indx < numb.length; indx++) {  /* the field should contain at least one digit */
        if (numb.charAt(indx)>= "0" && numb.charAt(indx) <= "9") {
            status = true
        }
    }

    for (var indx = 0; indx < numb.length; indx++) {
        if (!((numb.charAt(indx)>= "0" && numb.charAt(indx) <= "9") ||
             numb.charAt(indx) == " " ||
             numb.charAt(indx) == "." ||
             numb.charAt(indx) == ",")) {
            status = false
        }
    }

    if (!status) {
        //msg = "The '" + pname + "' field must be a number."
        msg = "'" + pname + "' phải là số."
        alert(msg)
    }
    return status
}

function parseNumb(pnumbstr) {
    var numb = pnumbstr.value
    var indx

    if (numb.length> 0) {
        indx = numb.indexOf(",")
    } else {
        indx = -1
    }
    while (indx != -1) {
        numb = numb.substring(0,indx) + numb.substring(indx*1 + 1,numb.length)
        indx = numb.indexOf(",")
    }

    if (numb.length> 0) {
        indx = numb.indexOf(" ")
    } else {
        indx = -1
    }
    while (indx != -1) {
        numb = numb.substring(0,indx) + numb.substring(indx*1 + 1,numb.length)
        indx = numb.indexOf(" ")
    }
    if (numb == "") {
        numb = 0
    }
    return numb
}

function parseMonth(pyear, pmonth) {
    var year  = parseNumb(pyear)
    var month = parseNumb(pmonth)
    var period
    var indx

    period = Math.ceil(month*1 + year*12)

    return period
}

function ParseDollar(pNumber) {
    var money = ""
    var numb = Math.round(pNumber)
    var indx1
    var indx2 = 0

    numb = "" + numb
    indx1 = numb.length - 1

    while (indx1> -1) {
        indx2 += 1
        if (indx2 == 4) {
            money = "," + money
            indx2 = 1
        }
        money = numb.substring(indx1,indx1*1 + 1) + money
        indx1 -= 1
    }

    money = "$ " + money

    return money
}

function checkIncOne(pInc) {
    var Inc = pInc
    var status = false

    if (checkEnter(Inc,"Lợi tức đầu tiên")) {
        status = checkNumb(Inc,"Lợi tức đầu tiên")
    }

    return status
}


function checkIntRate(pIntRate) {
    var IntRate = pIntRate
    var status  = true

    if (checkEnter(IntRate,"Phần trăm lãi suất")) {
        if (checkNumb(IntRate,"Phần trăm lãi suất")) {
            if (IntRate.value == 0) {
               // alert("The Interest Rate can not be zero.")
                alert("Số phần trăm lãi suất có thể bằng 0.")
                status = false
            }
        } else {
            status = false
        }
    } else {
        status = false
    }

    return status
}

function checkTermY(pYear) {
    var TermYear = pYear
    var status   = true

    if (checkEnter(TermYear,"Kì hạn hàng năm")) {
        if (checkNumb(TermYear,"Kì hạn hàng năm")) {
            if (TermYear.value> 30) {
                //alert("The Term of Loan can not be longer than 30 years.")
                alert("Thời gian đáo hạn không thể llớn hơn 30 năm.")
                status = false
            }
        } else {
            status = false
        }
    } else {
        status = false
    }

    return status
}

function checkTermM(pYear, pMonth) {
    var TermYear  = pYear
    var TermMonth = pMonth
    var status    = true
    var ValMonth  = pMonth.value

    if (ValMonth.length != 0) {
        if (checkNumb(TermMonth,"Kỳ hạn hàng tháng")) {
           if (TermMonth.value> 0 && TermYear.value> 29) {
                //alert("The Term of Loan can not be longer than 30 years.")
                alert("Thời gian đáo hạn không thể llớn hơn 30 năm.")
                status = false
            }
            if (TermMonth.value> 11) {
                //alert("Please use the Year field to enter a period longer than 11 months.")
                alert("Hãy nhập vào số năm nếu khoảng thời gian lớn hơn 11 tháng.")
                status = false
            }
        } else {
            status = false
        }
    }

    return status
}

var ACF = 10 //Account Keeping Fee
var fixedInterestRate = true //default interest rate type

function CalQualAmt() {
    var IncOne
    var IncTwo
    var OthInc
    var RentInc
    var TotInc

    var HomeLoan
    var OthLoan
    var CardLim
    var NumbDep
	var AmtDep
    var OthExp
    var TotExp

    var IntRate
    var MonthTerm
    var RepayAmt
    var QualAmt

    if (checkIncOne( document.getElementById('qualify').IncOne) &&
	  checkNumb( document.getElementById('qualify').IncTwo,"Second Income") &&
	  checkNumb( document.getElementById('qualify').OthInc,"Other Income") &&
	  checkNumb( document.getElementById('qualify').RentInc,"Rental Income") &&
	  checkNumberofApplicants( document.getElementById('qualify').Applicants, "No. of Applicants") &&
	  checkNumb( document.getElementById('qualify').HomeLoan,"Home Loan") &&
	  checkNumb( document.getElementById('qualify').OthLoan,"Other Loan") &&
	  checkNumb( document.getElementById('qualify').CardLim,"Card Limit") &&
	  checkNumb( document.getElementById('qualify').NumbDep,"Number of Dependants") &&
	  checkIntRate( document.getElementById('qualify').IntRate) &&
      checkTermY( document.getElementById('qualify').TermYear) &&
      checkTermM( document.getElementById('qualify').TermYear, document.getElementById('qualify').TermMonth)) {
        IncOne  = (parseNumb( document.getElementById('qualify').IncOne)/12)* document.getElementById('qualify').income1.options[ document.getElementById('qualify').income1.selectedIndex].value;
        IncTwo =  (parseNumb( document.getElementById('qualify').IncTwo)/12)* document.getElementById('qualify').income2.options[ document.getElementById('qualify').income2.selectedIndex].value;
        OthInc =  (parseNumb( document.getElementById('qualify').OthInc)/12)* document.getElementById('qualify').incomeother.options[ document.getElementById('qualify').incomeother.selectedIndex].value;
        RentInc = (parseNumb( document.getElementById('qualify').RentInc)/12)* document.getElementById('qualify').incomerental.options[ document.getElementById('qualify').incomerental.selectedIndex].value;
        HomeLoan = parseNumb( document.getElementById('qualify').HomeLoan);
        OthLoan = parseNumb( document.getElementById('qualify').OthLoan);
        CardLim = parseNumb( document.getElementById('qualify').CardLim);
        NumbDep = parseNumb( document.getElementById('qualify').NumbDep);

        IntRate = parseNumb( document.getElementById('qualify').IntRate)/1200
        MonthTerm = parseMonth( document.getElementById('qualify').TermYear, document.getElementById('qualify').TermMonth)

		// if SINGLE app, make sure only one income box is filled in.
		if ((returnRadioValue( document.getElementById('qualify').Applicants)==1) && (IncTwo> 0)) {
			IncTwo = 0;
			 document.getElementById('qualify').IncTwo.value = 0;
			alert ("You have selected Single Application and entered a value for 'Income Two'. This value has now been reset to $0. If you require a Joint Income, please select it under 'Application Type'");
		}

        TotInc = IncOne + IncTwo + OthInc

		OthExp = TotInc * 0.35;

		if (OthExp < 1000 && returnRadioValue( document.getElementById('qualify').Applicants)==1) { //IncTwo == 0)
			OthExp = 1000;
		} else if (OthExp < 1300 && returnRadioValue( document.getElementById('qualify').Applicants)==2) {
			OthExp = 1300;
		} else if (OthExp> 2000 && returnRadioValue( document.getElementById('qualify').Applicants)==1) {
			OthExp = 2000;
		} else if (OthExp> 2600 && returnRadioValue( document.getElementById('qualify').Applicants)==2) {
			OthExp = 2600;
		}

		if (NumbDep> 0)
			AmtDep = 175 + (NumbDep - 1) * 125;
		else
			AmtDep = 0;

		TotExp = AmtDep*1 + HomeLoan*1 + OthLoan*1 + (CardLim * 0.03) + OthExp*1;

		RepayAmt = TotInc + (RentInc * 0.7) - TotExp

		// no ACF on personal loans
		LoanAmt = (RepayAmt - ACF) * (1 - Math.pow((1 + IntRate*1),-MonthTerm))/IntRate

		if (LoanAmt> 0) {
             document.getElementById('qualify').LoanAmt.value = ParseDollar(Math.round(LoanAmt))
			return true;
        } else {
			 document.getElementById('qualify').LoanAmt.value = "$ 0"
			return true;
		}
    } else {
		 document.getElementById('qualify').LoanAmt.value = " "
		return false;
    }
}

function Init_Page() {
	 document.getElementById('qualify').IncOne.focus();
	 document.getElementById('qualify').IncOne.select();
}

// Calculate loan, open new window, submit form.
function PopUpPrint () {
	CalcRepay();
	inputstring = "repayment_calc_displaycertificate_frame.asp"
	inputstring = inputstring + "?LoanAmt1=" +  document.getElementById('repay').LoanAmt1.value
	inputstring = inputstring + "&IntRate1=" +  document.getElementById('repay').IntRate1.value
	inputstring = inputstring + "&TermYear1=" +  document.getElementById('repay').TermYear1.value
	inputstring = inputstring + "&TermMonth1=" +  document.getElementById('repay').TermMonth1.value
	inputstring = inputstring + "&RepayAmt1=" +  document.getElementById('repay').RepayAmt1.value
	window.open(inputstring,'certificate','width=640,height=600,scrollbars=yes,resizable=yes,screenX=0,screenY=0,left=0,top=0')
}

function checkEnter(pfield, pname) {
	var field = pfield.value
	var msg
	var status = true

	if (field.length == 0) {
		//msg = "The " + pname + " field must be entered."
		msg = "" + pname + " phải được nhập vào."
		alert(msg)
		status = false
	}

	return status
}

function checkNumb(pnumb, pname) {
	var numb = pnumb.value
	var message
	var indx
	var status = false

	for (var indx = 0; indx < numb.length; indx++) { /* the field should contain at least one digit */
		if (numb.charAt(indx)>= "0" && numb.charAt(indx) <= "9") {
			status = true
		}
	}
	for (var indx = 0; indx < numb.length; indx++) {
		if (!((numb.charAt(indx)>= "0" && numb.charAt(indx) <= "9") ||
		  numb.charAt(indx) == " " ||
		  numb.charAt(indx) == "." ||
		  numb.charAt(indx) == ",")) {
			status = false
		}
	}
	if (!status) {
		msg = "" + pname + " phải là số."
		//msg = "The " + pname + " field must be a number."
		alert(msg)
	}

	return status
}

function parseNumb(pnumbstr) {
	var numb = pnumbstr.value
	var indx

	indx = numb.indexOf(",")
	while (indx != -1) {
		numb = numb.substring(0,indx) + numb.substring(indx*1 + 1,numb.length)
		indx = numb.indexOf(",")
	}

	indx = numb.indexOf(" ")
	while (indx != -1) {
		numb = numb.substring(0,indx) + numb.substring(indx*1 + 1,numb.length)
		indx = numb.indexOf(" ")
	}

	return numb
}

function parseMonth(pyear, pmonth) {
	var year  = parseNumb(pyear)
	var month = parseNumb(pmonth)
	var period
	var indx

	period = Math.ceil(month*1 + year*12)

	return period
}

function checkLoan(pLoan) {
	var LoanAmt = pLoan
	var status

	if (checkEnter(LoanAmt,"Tổng vốn vay")) {
		status = checkNumb(LoanAmt,"Tổng vốn vay")
	}

	return status
}

function checkRepay(pRepay) {
	var RepayAmt = pRepay
	var status   = true

	if (checkEnter(RepayAmt,"Tiền lãi hàng tháng")) {
		if (checkNumb(RepayAmt,"Tiền lãi hàng tháng")) {
			if (RepayAmt.value == 0) {
				//alert("The Repay Amount can not be zero.")
				alert("Tổng tiền trả hàng tháng có thể bằng 0")
				status = false
			}
		} else {
			status = false
		}
	} else {
		status = false
	}

	return status
}

function checkIntRate(pIntRate) {
	var IntRate = pIntRate
	var status  = true

	if (checkEnter(IntRate,"Phần trăm lãi suất")) {
		if (checkNumb(IntRate,"Phần trăm lãi suất")) {
			if (IntRate.value == 0) {
				//alert("The Interest Rate can not be zero.")
				alert("Số phần trăm lãi suất có thể bằng 0.")
				status = false
			}
		} else {
			status = false
		}
	} else {
		status = false
	}

	return status
}

function checkTermY(pYear) {
	var TermYear = pYear
	var status   = true

	if (checkEnter(TermYear,"Kì hạn năm")) {
		if (checkNumb(TermYear,"Kì hạn năm")) {
			if (TermYear.value> 30) {
				//alert("The Year Period can not be longer than 30 years.")
				alert("Tổng số năm không thể lớn hơn 30.")
				status = false
			}
		} else {
			status = false
		}
	} else {
		status = false
	}

	return status
}

function checkTermM(pMonth) {
	var TermMonth = pMonth
	var status    = true

	if (checkEnter(TermMonth,"Kỳ hạn tháng")) {
		if (checkNumb(TermMonth,"Kỳ hạn tháng")) {
			//if (TermMonth.value> 11) {
				//alert("Please use the Year field to enter a period longer than 11 months.")
				//status = false
			//}
		} else {
			status = false
		}
	} else {
		status = false
	}

	return status
}

function CalcRepayAmt(pLoanAmt, pIntRate, pTerm) {
	var RepayAmt

	RepayAmt = pLoanAmt * pIntRate/(1 - Math.pow((1 + pIntRate*1),-pTerm))
	RepayAmt = Math.ceil(RepayAmt)

	return RepayAmt
}

/////////////////////////////////////////////////////////
function CalcRepay() {
	var LoanAmount
	var InterestRate
	var MonthTerm

	if (checkLoan( document.getElementById('repay').LoanAmt1) &&
	  checkIntRate( document.getElementById('repay').IntRate1) &&
	  checkTermY( document.getElementById('repay').TermYear1) &&
	  checkTermM( document.getElementById('repay').TermMonth1)) {
		LoanAmount   = parseNumb( document.getElementById('repay').LoanAmt1)
		InterestRate = parseNumb( document.getElementById('repay').IntRate1)/1200
		MonthTerm    = parseMonth( document.getElementById('repay').TermYear1, document.getElementById('repay').TermMonth1)

		 document.getElementById('repay').RepayAmt1.value = CalcRepayAmt(LoanAmount, InterestRate, MonthTerm)
	} else {
		 document.getElementById('repay').RepayAmt1.value = " "
	}
}
/////////////////////////////////////////////////////
function CalcTerm() {
	/* Calculate the Repaid Period */

	var MonthTerm    = 0
	var YearTerm     = 0
	var MaxTerm      = 30 * 12     /* 30 years */
	var LoanAmount
	var RepayAmount
	var InterestRate
	var RepayFreq
	var MinRepay

	if (checkLoan( document.getElementById('repay').LoanAmt2) &&
	  checkRepay( document.getElementById('repay').RepayAmt2) &&
	  checkIntRate( document.getElementById('repay').IntRate2)) {
		LoanAmount   = parseNumb( document.getElementById('repay').LoanAmt2)
		RepayAmount  = parseNumb( document.getElementById('repay').RepayAmt2)
		InterestRate = parseNumb( document.getElementById('repay').IntRate2)/1200
		MinRepay     = CalcRepayAmt(LoanAmount, InterestRate, MaxTerm)
		RepayFreq = document.getElementById('repay').RepayFreq.options[document.getElementById('repay').RepayFreq.selectedIndex].value
		RepayAmount = RepayAmount * RepayFreq/12
		if (RepayAmount < MinRepay) {
			//Msg = "Sorry, the minimum repayment amount must be " + MinRepay + " dollars."
			Msg = " Rất tiếc, tổng tiền trả tối thiểuphải là " + MinRepay + " dollars."
			alert(Msg)
			 document.getElementById('repay').TermYear2.value  = " "
			 document.getElementById('repay').TermMonth2.value = " "
		} else {
			MonthTerm = Math.log(RepayAmount/(RepayAmount - LoanAmount * InterestRate)) / Math.log(1 + InterestRate)
			MonthTerm = Math.ceil(MonthTerm)
			YearTerm = Math.floor(MonthTerm / 12)
			MonthTerm = MonthTerm - (YearTerm * 12)

			 document.getElementById('repay').TermYear2.value  = YearTerm
			 document.getElementById('repay').TermMonth2.value = MonthTerm
		}
	} else {
		 document.getElementById('repay').TermYear2.value  = " "
		 document.getElementById('repay').TermMonth2.value = " "
	}
}
/////////////////////////////////////////////////////////
function CalcLoan() {
	var LoanAmt
	var RepayAmount
	var InterestRate
	var MonthTerm

	if (checkRepay( document.getElementById('repay').RepayAmt3) &&
	  checkIntRate( document.getElementById('repay').IntRate3) &&
	  checkTermY( document.getElementById('repay').TermYear3) &&
	  checkTermM( document.getElementById('repay').TermMonth3)) {
		RepayAmount  = parseNumb( document.getElementById('repay').RepayAmt3)
		InterestRate = parseNumb( document.getElementById('repay').IntRate3)/1200
		MonthTerm    = parseMonth( document.getElementById('repay').TermYear3, document.getElementById('repay').TermMonth3)
		LoanAmt = RepayAmount * (1 - Math.pow((1 + InterestRate*1),-MonthTerm))/InterestRate

		 document.getElementById('repay').LoanAmt3.value = Math.floor(LoanAmt)
	} else {
		 document.getElementById('repay').LoanAmt3.value = " "
	}
}
function changeloan(i)
{
	document.getElementById("Div1").style.display = "none";
	document.getElementById("Div2").style.display = "none";
	document.getElementById("Div3").style.display = "none";
	var bgImgSelected = "url(images/loan/loan_06.gif)";
	var bgNone        = "url(images/loan/loan_08.gif)";
	switch(i) {
		case "Div1":{
			document.getElementById(i).style.display = "";			
			document.getElementById("loanTerm").style.backgroundImage = bgImgSelected;
			document.getElementById("loadRepayment").style.backgroundImage = bgNone;						
			document.getElementById("loanAmount").style.backgroundImage = bgNone;
			document.getElementById("l1").style.color = "#ffffff";
			document.getElementById("l2").style.color = "#000000";
			document.getElementById("l3").style.color = "#000000";
			break;
		}
		case "Div2":{
			document.getElementById(i).style.display = "";
			document.getElementById("loanTerm").style.backgroundImage = bgNone;			
			document.getElementById("loadRepayment").style.backgroundImage = bgImgSelected;			
			document.getElementById("loanAmount").style.backgroundImage = bgNone;
			document.getElementById("l1").style.color = "#000000";
			document.getElementById("l2").style.color = "#ffffff";
			document.getElementById("l3").style.color = "#000000";
			break;
		}
		case "Div3":{
			document.getElementById(i).style.display = "";
			document.getElementById("loanTerm").style.backgroundImage = bgNone;
			document.getElementById("loadRepayment").style.backgroundImage = bgNone;			
			document.getElementById("loanAmount").style.backgroundImage = bgImgSelected;
			document.getElementById("l1").style.color = "#000000";
			document.getElementById("l2").style.color = "#000000";
			document.getElementById("l3").style.color = "#ffffff";
			break;	
		}
	}	
}