Untitled

<body>
        <script language ="javascript">
                function Calculate(){

                    var pricee = document.getElementById('price').value;
                    var qtyy = document.getElementById('qty').value;
                    var sum = pricee * qtyy;
                    document.getElementById('total').value = sum;

                    var newprice = document.getElementById('price2').value;
                    var newqty = document.getElementById('qty2').value;
                    var sum2 = newprice * newqty;
                    document.getElementById('total2').value = sum2;
                }
            </script>


    <form>
       Product Name: <input type="text" id="name" name="productName">
       <br>
       Product Price: <input type="text" id="price" name="productPrice">
       <br>
       Product Qty: <input type="text" id="qty" name="productQty" type="text" id="total" name="producttotal"
       onChange="Calculate()">
       <br>
       Total: <input type="text" id="total" name="producttotal">

       <hr>

       Product Name: <input type="text" id="name2" name="productName">
       <br>
       Product Price: <input type="text" id="price2" name="productPrice">
       <br>
       Product Qty: <input type="text" id="qty2" name="productQty" type="text" id="total" name="producttotal"
       onChange="Calculate()">
       <br>
       Total: <input type="text" id="total2" name="producttotal">


    </form>