คือ ผมจะทำให้ระบบ admin สามารถ ลบความคิดเห็น ในแต่ละกระทู้

<?php echo $row[prhead] ?>
                    <br />
                    <?php
		$sql ="select * from answer where prid=$prid;";
		 mysql_query('SET NAMES utf8');
		$result = mysql_query($sql) or exit($sql);
		$num = mysql_num_rows($result);
		for($i=1;$i<=$num;$i++){
			$row = mysql_fetch_array($result);
			}
		?>

<table width="400" border="0" cellspacing="1" cellpadding="0">
                        <tr>
                          <td width="100" bgcolor="#EEEEEE"><div align="center" class="style1 style1">คำตอบที่ : </div></td>
                          <td width="300" bgcolor="#EEEEEE"><div align="left" class="style1"><?php echo $row[id] ?></div></td>
                        </tr>
                        <tr>
                          <td bgcolor="#EEEEEE"><div align="center" class="style1 style1">รายละเอียด : </div></td>
                          <td bgcolor="#EEEEEE"><span class="style1"><?php echo $row[message] ?></span></td>
                        </tr>
                        <tr>
                          <td bgcolor="#EEEEEE"><div align="center" class="style1 style1">โดย : </div></td>
                          <td bgcolor="#EEEEEE"><span class="style1"><?php echo $row[name] ?></span></td>
                        </tr>
                        <tr>
                          <td bgcolor="#EEEEEE"><div align="center" class="style1 style1">เมื่อเวลา : </div></td>
                          <td bgcolor="#EEEEEE"><span class="style1"><?php echo $row[date] ?></span></td>
                        </tr>
                        <tr>
                          <td bgcolor="#EEEEEE"><span class="style1"></span></td>
                          <td bgcolor="#EEEEEE"><div align="left" class="style1"><a href="delete_answer.php?prid=<?php echo $row[id] ?>">ลบ</a></div></td>
                        </tr>
                      </table>