<div id="mortgageCalculator">
    <!-- Script by hscripts.com -->
    <script type="text/javascript">
        function checnum(as)
        {
            var dd = as.value;
            if(isNaN(dd))
            {
                dd = dd.substring(0,(dd.length-1));
                as.value = dd;
            }
        }
 
      function loan() {
            var a = $("#aa").val();
            var b = $("#bb").val();
            var c = $("#cc").val();
            var n = c * 12;
            var r = b/(12*100);
            var p = (a * r *Math.pow((1+r),n))/(Math.pow((1+r),n)-1);
            var prin = Math.round(p*100)/100;
            $("#mortgagePayment").val(prin);
            var mon = Math.round(((n * prin) - a)*100)/100;
            $("#mortgageMonthlyAverageInterest").val(mon);
            var tot = Math.round((mon/n)*100)/100;
            $("#mortgageMonthlyInterest").val(tot);
            for(var i=0;i<n;i++)
            {
                var z = a * r * 1;
                var q = Math.round(z*100)/100;
                var t = p - z;
                var w = Math.round(t*100)/100;
                var e = a-t;
                var l = Math.round(e*100)/100;
                a=e;
            }
        }
 
        function resetLoan()
        {
            $("#mortgagePayment").val("");
            $("#mortgageMonthlyAverageInterest").val("");
            $("#mortgageMonthlyInterest").val("");
        }
    </script>
    <!-- Script by hscripts.com -->
    <form method="post">
        <fieldset>
        <div>
            <label for="aa">Loan Amount:</label>
            <input id="aa" type="text" onkeyup="checnum(this)">
        </div>
        <div>
            <label for="bb">Interest Rates:</label>
            <input id="bb" type="text" onkeyup="checnum(this)">
        </div>
        <div>
            <label for="cc">Term(Years):</label>
            <input id="cc" type="text" onkeyup="checnum(this)">
        </div>
            <div>
                <label></label>
                <input type="button" name="ss" value="Calculate" onclick="loan()">
                <input type="button" value="Reset" id="mortgageCalculatorResetButton" onclick="resetLoan()">
            </div>
        </fieldset>
        <div>
            <label>Monthly Payment (EMI):</label>
            <input type="text" id="mortgagePayment" readonly="">
        </div>
        <div>
            <label>Monthly Average Interest:</label>
            <input type="text" id="mortgageMonthlyAverageInterest" readonly="">
        </div>
        <div>
            <label>Monthly Interest:</label>
            <input type="text" id="mortgageMonthlyInterest" readonly="">
        </div>
    </form>
</div>