if(!empty($DESC)){
            foreach ($DESC as $i => $b) {

                    echo '
                    <tr class="table-bordered">
                    <td>
                    <input name="desc_id[]" type="hidden" value="'. $DESC_id[$i] . '">
                    <input name="desc[]" type="text" class="input-long" value="'. $DESC[$i] . '"></td>
                    <td> <input name="desc_hr[]"  id="desc_hr" type="text" class="input-short" value="'. $DESC_hr[$i] .'" onChange="updateAmount()"></td>
                    <td> <input name="desc_rt[]" type="text" class="input-short" value="'. $DESC_rt[$i].'" onChange="checkDecimals(this)"></td>
                    <td><input name="desc_amt[]" type="text" class="desc_amt" value="'.$DESC_amt[$i].'" onChange="updateTotal(); checkDecimals(this)"></td>
                    <td><input type="button" value="X" name="delete" class="btnDelete" onclick="deleteLine(this,'. $ei_num .','. $i .','.$DESC_id[$i].')"></td>
                    </tr>';
            }
        }
        else{
             echo'
            <tr class="table-bordered">
            <td><input name="desc[]" type="text" class="input-long" value=""></td>
            <td> <input name="desc_hr[]" id="desc_hr" type="number" class="input-short" value="" onChange="updateAmount()"></td>
            <td> <input name="desc_rt[]" id="desc_rt" type="text" class="input-short" value="0.00" onChange="checkDecimals(this);updateAmount()"></td></td>
            <td><input name="desc_amt[]" type="text" id="desc_amt" class="desc_amt" value="0.00" onChange="updateTotal(); checkDecimals(this)"></td>
            <td border="0"><input type="button" value="X" name="delete" class="btnDelete" onclick="deleteLine(this,'. $ei_num .',0)"></td>
            </tr>';
        }

function newLine(){

    //get the total amount of rows in the table
  var rowCount = $('#desc_table tr').length;
  var i = rowCount - 1;
  var eiNum = this.ei_num.value;

    //create new row data
  var newRowData = '<tr class="table-bordered" id=' + rowCount + '><td class="input-long" ><input name="desc[]" type=text class="input-long"></td><td><input name="desc_hr[]" id="desc_hr" type=number class="input-short" onChange="updateAmount()"></td><td><input name="desc_rt[]" id="desc_rt" type=number class="input-short" value="0.00" onChange="checkDecimals(this);updateAmount()"></td><td><input name="desc_amt[]" type=text class="desc_amt" value="0.00" onChange="updateTotal(); checkDecimals(this)"></td><td><input type="button" value="X" name="delete" class="btnDelete" onclick="deleteLine(this,'+ eiNum +','+ i +')"></td></tr>';

  //append new row to bottom of the table
  $(newRowData).appendTo($("#desc_table tbody"));
}

function updateAmount(){

    var hours = document.getElementsByName("desc_hr").value;
    var rate = document.getElementById("desc_rt").value;
    var amount = document.getElementById("desc_amt");
    var tAmount = 0;

    tAmount = hour*rate;
    amount.value = tAmount.toFixed(2);

    if(tAmount != 0){
        updateTotal();
    }
}