ฟอร์ม search ไม่ขึ้นหน้า 2 ครับ !! คือมันรันหน้าแรกก็ขึ้นดีหรอกครับ เเต่พอกดหน้าสองไม่มีอะไรขึ้นเลยอ่ะครับ

<?
include "../connect.php";

$txt=$_POST['txt'];
if ($field=='webboard_answer_katoo') {
$sql="select * from webboard_answer_katoo where post like '%$txt%' ";
$result=mysql_db_query($dbname,$sql);
$row=mysql_num_rows($result);

$Per_Page = 3;   // 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($row<=$Per_Page) {
$Num_Pages =1; 
} else if(($row % $Per_Page)==0) 
{ 
  
$Num_Pages =($row/$Per_Page) ; 
} 
else
{ 
$Num_Pages =($row/$Per_Page)+1; 
$Num_Pages = (int)$Num_Pages; 
} 
?>
<style type="text/css">
<!--
@import url("../css/board.css");
@import url("../css/rmutt.css");
a:link {
	text-decoration: none;
}
a:visited {
	text-decoration: none;
}
a:hover {
	text-decoration: none;
}
a:active {
	text-decoration: none;
}
-->
</style>
<table width="100%" border="0" class="bg-title" bgcolor="#F8F8F8">
  <tr>
    <td height="64" valign="top" ><table width="100%" border="0">
      <tr>
        <td width="85%"  height="27" valign="baseline" class="char">คำค้นหา : <?=$txt?>
         </td>
        </tr>
        <?
		$sql.="order  by id ASC LIMIT $Page_Start , $Per_Page";
		$result=mysql_db_query($dbname,$sql);
		while (
		$data2=mysql_fetch_array($result)) {
		$post=$data2['post'];
		$post1=substr($post, 0,250);
		$rec_id=$data2['rec_id'];
		
		$sql2="select * from webboard_katoo where id='$rec_id' ";
		$result2=mysql_db_query($dbname,$sql2);
		$data=mysql_fetch_array($result2);
		$title=$data['title'];
		$id=$data['id'];
        ?>
        <tr>
        <td height="21" class="font">โพส : </span><br />
          <table width="96%" border="0" align="center">
            <tr>
              <td bgcolor="#666666" height="28"><a href="webboard_topic.php?tid=<?=$id?>&title=<?=$title?>" class="char"><?=$post1?> ...</a></td>
            </tr>
          </table></td>
        </tr>
      <tr>
        <td height="20" valign="top" class="font">หัวข้อสนทนา : <a href="webboard_topic.php?tid=<?=$id?>&title=<?=$title?>" class="color"><?=$title?></a></td>
      </tr>
      <tr>
        <td height="1" class="line_point"></td>
        </tr>
       <? } ?>
    </table></td>
  </tr>
</table>
<? } ?>
<table bgcolor="#F8F8F8" height="28" align="left" valign="middle">
<td width="20"  class="line-all" bgcolor="#ADD3E9" align="center">
 <?= $row;?>
 </td>

<? 
if($Prev_Page) { 
echo " 
<td>
<a href='$_SERVER[SCRIPT_NAME]?Page=$Prev_Page' class='color'>กลับ |</a></td> "; 

} 

for($i=1; $i<=$Num_Pages; $i++){ 
	 if($i != $Page) { 
	 echo "<td width='20' align='center'><a href='search_board.php?Page=$i' class='font'>$i</a> </td>"; 
	 } else { 
      echo "<td width='20' bgcolor='#FF6600' align='center' class='char'><b> $i </b></td>"; 
	 } 
} 
if($Page!=$Num_Pages) { 
echo " <td >
<a href ='$_SERVER[SCRIPT_NAME]?Page=$Next_Page' class='color'>| ต่อไป</a> 
</td>"; 
} 
?>

<?
mysql_close();
?>