I mix my test code and my full code:

<FONT size=3>
PHP Code:
<?php
 
  
  
  define
('CLOTH_TYPE_SPECIAL_VALUE''AAA, BBB, CCC');
  
define('INPUT_MULTIPLE'14.15);
  
define('OUTPUT_MULTIPLE'15.85);
  
  include 
'config.php';
 
$rexist 0;
if(
$_POST["clt_no"])
    {
    
$query "INSERT INTO clt_transact (cloth_type) VALUES ('" $_POST["cloth_type"] . "')";
    
$result mysql_query($query);
    
$clt_transact_id mysql_insert_id();
    
    
$opname $_POST["opname"];
    
$inqty $_POST["inqty"];
    
$outqty $_POST["outqty"];
    
$varqty $_POST["varqty"];
   
    
    
$totalarr count($opname) - 1;
    for(
$ctr=0$ctr $totalarr$ctr++)
        {
        
$inqty[$ctr] = (float) $inqty[$ctr];
        
$varqty[$ctr] = (float) $varqty[$ctr];
        
$outqty[$ctr] = (float) $outqty[$ctr];
         
        
$query "INSERT INTO clt_traceability (operation_name, input_qty, output_qty, variance_qty, clt_transact_id) VALUES ('" $opname[$ctr] . "', '" $inqty[$ctr] . "','" $outqty[$ctr] . "', '" $varqty[$ctr] . "', '" $clt_transact_id "')";
        
$result mysql_query($query);
        }   
    }
  
  if (isset(
$_POST['cloth_type']) && !empty($_POST['cloth_type'])) {
        
$clothType $_POST['cloth_type'];
    } else {
        
$clothType null;
    }
    
    if (
null !== $clothType) {
        if (isset(
$_POST['input_qty']) && !empty($_POST['input_qty'])) {
             
$inputQty $_POST['input_qty'];
 
             if (
CLOTH_TYPE_SPECIAL_VALUE == $clothType) {
                 
$inputQty *= INPUT_MULTIPLE;
             }
        } else {
             
$inputQty null;
        }
 
        if (isset(
$_POST['output_qty']) && !empty($_POST['output_qty'])) {
             
$outputQty $_POST['output_qty'];
 
             if (
CLOTH_TYPE_SPECIAL_VALUE == $clothType) {
                 
$outputQty *= OUTPUT_MULTIPLE;
             }
        } else {
             
$outputQty null;
        }
    
  
$sql "SELECT t.operation_name
                FROM clt_traceability AS t, clt_transact AS c
                WHERE c.cloth_type = '" 
.  $cloth_type "'
                AND t.operation_name IN('Operation3', 'Operation4', 'Operation5')
                AND t.clt_no = c.clt_no"
;
                
        
$resultSet mysql_query($sql);
    }
 
$rexist 1;
?>

<FONT size=3>
HTML Code:
<html>
<head>
    <style type="text/css">
    .myclass {
     font-size: 10pt; font-family:Arial, Helvetica, sans-serif;
    }
    </style>
    
    <script type="text/javascript">
document.onkeypress = function(e){
    e = e || event; e.returnValue = true;
    var t = e.target || e.srcElement, re = /^(inqty|outqty)(\d+)$/, f = arguments.callee, m, i;
    function next(){
        if(!f.els && (m = t.form) === document.forms.clttype){
            var ipts = m.getElementsByTagName('input'), els = []; i = ipts.length - 1;
            for (i; i > -1; --i){
                if(ipts[i].type && ipts[i].type.toLowerCase() === 'text'){
                    els.push(ipts[i]);
                }
            }
            f.els = els;
        }
        if(f.els){
            i = f.els.length - 1;
            for (i; i > -1; --i){
                if(f.els[i] === t && (m = f.els[i - 1])){
                    m.focus();
                }
            }
        }
    }
    if((m = re.exec(t.id)) && e.keyCode === 13){
        e.returnValue = false;
        t.form.elements['varqty' + m[2]].value = t.form.elements['inqty' + m[2]].value - t.form.elements['outqty' + m[2]].value;
    } else if (t.type && e.keyCode === 13 && t.type.toLowerCase() !== 'submit') {
        e.returnValue = false;
    }
    if(!e.returnValue){
        next();
        if(e.preventDefault){e.preventDefault();}
    }
    return e.returnValue;
}
</script>
</head>
<body>
<form action='frame.php' method="post" name="clttype">

PHP Code:
<?php
    $rexist 
1;
    
    echo 
"<table>";
    echo 
"<tr><td>Cloth Type</td><td><input type='text' name='cloth_type' id='cloth_type' /></td></tr>";
    echo 
"</table>";
    echo 
"<p>&nbsp;</p>";
    
    
$query "SELECT * FROM clt_trace_operations ORDER BY operation_name";
    
$last_operation_name "";
    
$result mysql_query($query);
    if(
$result)
        {
        
$rexist 1;
        echo 
"<table>";
        echo 
"<tr><th class='myclass'>OPERATIONS</th><th class='myclass'>INPUT <br/> QTY</th><th class='myclass'>OUTPUT <br/> QTY</th><th class='myclass'>VARIANCE Qty</th></tr>";
        
$totalrows mysql_num_rows($result);
        
$trows $totalrows 1;
        for(
$ctr 0$ctr $trows$ctr++)
            {
            
$row mysql_fetch_array($result);
            
$tctr $ctr 1;
            echo 
"\n\t<tr>";
            echo 
"\n\t\t<td>";
            if (
$last_operation_name != $row["operation_name"]) echo $row["operation_name"];
            
$last_operation_name $row["operation_name"];
            echo 
"<input type='hidden' width='400' name='opname[]' value='" $row["operation_name"] . "' /></td>";  
            echo 
"\n\t\t<td><input size='6' type='text' name='inqty[]' id='inqty" $ctr "' /></td>";
            echo 
"\n\t\t<td><input size='6' type='text' name='outqty[]' id='outqty" $ctr "' ></td>";
            echo 
"\n\t\t<td><input size='6' type='text' name='varqty[]' id='varqty" $ctr "' /></td>";
            echo 
"\n\t</tr>";
            }
        if(
$totalrows 1);
            {
            
$row mysql_fetch_array($result);
            echo 
"\n\t<tr>";
            echo 
"\n\t\t<td>";
            if (
$last_operation_name != $row["operation_name"]) echo $row["operation_name"];
            
$last_operation_name $row["operation_name"];
            echo 
"<input type='hidden' width='400' name='opname[]' value='" $row["operation_name"] . "' /></td>";   
            echo 
"<input type='hidden' name='opname[]' value='" $row["operation_name"] . "' /></td>";
            echo 
"\n\t\t<td><input size='6' type='text' name='inqty[]' id='inqty"  $ctr "' /></td>";
            echo 
"\n\t\t<td><input size='6' type='text' name='outqty[]'  id='outqty" $ctr "'  /></td>";
            echo 
"\n\t\t<td><input size='6' type='text' name='varqty[]' value=''  id='varqty" $ctr "' /></td>";
            echo 
"\n\t</tr>";
            }
        echo 
"</table>";
        }   
           echo 
"<p><input type='submit' value='  Save  ' id='saveform' /></p>";
    echo 
"<input type='hidden' name='clt_typeno' value='" $_POST["clt_typeno"] . "' />";
?>
</form>
</body>
</html>


and when i run this code and I type AAA as a cloth type and I input 20 in input qty it did not multiply automatically in 14.15, the 20 was not changed.

Thank you