โชว์สินค้าทีละ4แถว พอกดเลขหน้าถัดไปมันไม่มีสินค้าขึ้นมา ช่วยด้วยจ้า

<?$id_type_select=$_GET[t_typeproductid];?>
<?include "connect.php";?>

<table width="100%" border="0" cellspacing="4">

<?
$sql="select  *  from  product where ref_id_type='$id_type_select' " ;
$result=mysql_db_query ($dbname,$sql);
$number = mysql_num_rows( $result);        
$Per_Page = 4;   // Per Page         
$Page = $_GET["Page"];         
if(!$_GET["Page"])       
{             
$Page=1;         
}   
$Prev_Page = $Page-1;         
$Next_Page = $Page+1;      
$Page_Start = (($Per_Page*$Page)-$Per_Page);       
if($number<=$Per_Page)     
{           
$Num_Pages =1;        
}        
else if(($number % $Per_Page)==0)        
{            
$Num_Pages =($number/$Per_Page) ;       
}   
else       
{           
$Num_Pages =($number/$Per_Page)+1;            
$Num_Pages =(int)$Num_Pages;     
}        
$sql .="order by p_productid ASC LIMIT  $Page_Start , $Per_Page";      
 $result= mysql_query($sql);      
echo"<table border=\"0\"  cellspacing=\"50\" cellpadding=\"50\"><tr>";      
$intRows = 0;       
while($rs=mysql_fetch_array($result))       
{           
echo "<td>  ";           
$intRows++; 
?>            
<center>     
      <object classid='clsid:D27CDB6E-AE6D-11cf-96B8-444553540000' codebase='http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0'<width='20%' valign='top'>
	    <param name='movie' value='imageblythe/<?=$rs["p_picturename"];?>' />
        <param name='quality' value='high' />      
       <embed  src="imageblythe/<?=$rs["p_picturename"];?>" quality='high' pluginspage='http://www.macromedia.com/go/getflashplayer' type='application/x-shockwave-flash' width='80' height='90'></embed></object><br>               
<?=$rs["p_name"];?> <br> 
<?=$rs["p_price"];?>        
<br>            
</center>  
<?            
echo"</td>";           
if(($intRows)%2==0)          
{                
echo"</tr>";            
}         
}         
echo"</tr></table>";     
?>         
<br> 
จำนวนสินค้า  <?= $number;?> แบบ : <?=$Num_Pages;?> หน้า :        
<?         
if($Prev_Page)         
{             
echo " <a href='$_SERVER[SCRIPT_NAME]?Page=$Prev_Page'><< กลับ</a> ";         
}         
for($i=1; $i<=$Num_Pages; $i++){             
if($i != $Page)             
{                 
echo "[ <a href='$_SERVER[SCRIPT_NAME]?Page=$i'>$i</a> ]";             
}           
else         
{              
echo "<b> $i </b>";          
}       
}      
if($Page!=$Num_Pages)        
{             
echo " <a href ='$_SERVER[SCRIPT_NAME]?Page=$Next_Page'>ถัดไป>></a> ";         
}         
?>  
<? 
mysql_close(); 
?>