ขอความกรุณาช่วยดูโค้ดให้หน่อยค่ะ PHP+AJAX คือว่าทำโค้ดเกี่ยวกับการแบ่งเพจค่ะ

<? require_once("../../includes/function.php"); 
header("Cache-Control: no-cache, must-revalidate"); 
header("Pragma: no-cache"); 


$sGroup = "SELECT * FROM tblproductgroup ORDER BY GroupName";
$vGroup = select_data_func($sGroup); ?>
<table class=cssTable>
<tr class="cssMainTitle"><td align="right">??????:  
<select id="listGroup" name="listGroup" onchange="changeSelect('Useful/Product_show.php?mode=search', 'listGroup');">
	
   
	
	<? while($rGroup = mysqli_fetch_array($vGroup)){
		if($_GET['v'] == $rGroup['Group_ID']){ $status = "selected"; }else{ $status = ""; } 
		echo "<option value='".$rGroup['Group_ID']."' $status>".$rGroup['GroupName']."</option>";
	} ?>
</select></td></tr>

<? 
if(!isset($start)){
$start =0;
}

$limit = '4'; 

    $sProductd= "SELECT * FROM tblproduct     ";
$vProductd = select_data_func($sProductd );
$nProductd  = mysqli_num_rows($vProductd); 

   if(isset($_GET['v']) ){ 
	$sProduct = "SELECT * FROM tblproduct WHERE  Group_ID = ".$_GET['v']." ORDER BY ProductName DESC LIMIT $start,$limit ";
}else{
    $sProduct = "SELECT * FROM tblproduct    ORDER BY ProductName  DESC LIMIT $start,$limit ";
}
$vProduct  = select_data_func($sProduct );
$nProduct  = mysqli_num_rows($vProduct ); 

if($nProduct  == 0){ ?>
	<tr class='cssContent cssFontMsg'><td align="center">????????????????????</td></tr>
<? }else{ ?>
    <tr><td>
    <table width="100%">

    <? $count = 0; 
    while($rProduct  = mysqli_fetch_array($vProduct )){ // ??????????????? ??????????? 2 ???????
        if($count == 0){ // ?????????? 1 ??????????? ?>
            <tr><td width="50%">
            <table class=cssSubTable>
            <tr class=cssSubTitle><td colspan="2" height="40px">
               <a href='#' onClick="getMethod('<?="Useful/shoppingcart.php?cid=".$rProduct['Product_ID']?>');" class="csslink"><?=$rProduct ['ProductName']?></a></td></tr>
            <tr><td rowspan=4 align=center valign=middle>
                <img src='<?="image/Product/".$rProduct ['ProductImage']?>' height="100" border=1/></td></tr>
           
            <tr><td>????: <?=number_format($rProduct ['ProductPrice'])?> ???</td></tr>
            </table></td>
        <?	$count++;
        }else{ // ?????????? 2 ?????????? ?> 
            <td width=50%>
            <table class=cssSubTable>
            <tr class=cssSubTitle><td colspan=2 height="40px">
              <a href='#' onClick="getMethod('<?="Useful/shoppingcart.php?cid=".$rProduct['Product_ID']?>');" class="csslink"><?=$rProduct ['ProductName']?></a></td></tr>
            <tr><td rowspan=4 align=center valign=middle>
                 <img src='<?="image/Product/".$rProduct ['ProductImage']?>' height="100" border=1/></td></tr>
           
            <tr><td>????: <?=number_format($rProduct ['ProductPrice'])?> ???</td></tr>
            </table></td>
		    <?	$count = 0;
                  
		}

    }
		?>
		<table class=csssubTable>
<tr class="cssSubTitle"><td align="right">
		<? $page = ceil($nProductd/$limit); // ??? record ??????? ??????? ??????????????????????????
/* ???????? ???? ?????????? ???????? ???? ??????????????? 3 ?????????????? 1 2 3 */
for($i=1;$i<=$page;$i++){
if($_GET['page']==$i){ //????????? page ??? ??? ???????????
echo "[<a href='#?start=".$limit*($i-1)."&page=$i'><B>$i</B></A>]";//?????? ???????? ??????????? 1
}else{
echo "[<a href='#?start=".$limit*($i-1)."&page=$i'>$i</A>]"; //?????? ???????? ??????????? 2

}
}
?>		
</td></tr>	

<? } ?></table>