สอบถามเรื่อง Hide Show function อยากให้เป็น Hide default คะ แต่ที่หนูทำได้มันเป็น show default

<?php


$body_pet_query = mysql_query("select * from body_pet");
while($body = mysql_fetch_array($body_pet_query))
{
$id=$body['b_id'];
$count=count($id);
for($n=1;$n<=$count;$n++){ ?>
<table class='table'>
<tr><th colspan='3' align='center' bgcolor='#0099FF' style="cursor:pointer;" onclick="$('#tr_toggle<?=$n?>').toggle();"><font color='#FFFFFF' size='5'><? echo $body[b_type_name] ?></font> </th>



<?
	$body_b_id = $body['b_id'];

	$manner_query = mysql_query("select * from manner where b_id=$body_b_id");
	while($manner = mysql_fetch_array($manner_query)){ ?>
<tr  style="display:none;" id="tr_toggle<?=$n?>" align="center"><td><?=$n?></td>
<td align='center' ><? echo  $manner[manner_name]; ?></td>
<th align="center"><input type='checkbox' value='<? echo $manner[manner_id]; ?>' name='manner[]'></th>
</tr>

<?
}
	}
	
}
?>
</table>
<script type="text/javascript" src="http://code.jquery.com/jquery-latest.min.js"></script>

function tr_hide(name){
	$('.' + className).toggle();
}

while($manner = mysql_fetch_array($manner_query)){
    echo "<tr class=\"$id hideTr\"><td>".$row."</td>";
    echo "<td align='center'>$manner[manner_name]</td>";
    echo "<th align=center><input type='checkbox' value='$manner[manner_id]' name='manner[]'></th>";
    echo "</tr>";
    $row++;
}

<script>
$(document).ready(function(){
  $(".btn1").click(function(){
  $("tr").hide();
  });
  $(".btn2").click(function(){
  $("tr").show();
  });
});
</script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<td bgcolor="#00CCFF">
<div align="left">
    <h2 class='art-postheader'><span class='art-postheadericon'>ระบบวินิจฉัยโรคจากอาการเบื้องต้น
                                </span></h2></div>
<br/>

<font size="5px">เลือกประเภทของสัตว์เลี้ยง:&nbsp;&nbsp;

 <form name="form1"  id = "form1" action="index.php?modules=dianose&file=result2" method="post"  onSubmit="JavaScript:return fncSubmit();"/>
<?

$result = mysql_query("SELECT * FROM pet_type") or die(mysql_error());
	while(list($pet_typeid,$pet_typename)=mysql_fetch_row($result))//วนลูปให้มัน
	
	{
	
	echo "<input type='radio' id='rdo' value='$pet_typeid' name='pet_typeid' >$pet_typename&nbsp;&nbsp;&nbsp;";
	
	}
?>

</font>
<br/><br/>

<?php
echo "<table class='table'>";//อะไรที่ไม่ซ้ำเอาไว้นอกลูป
$body_pet_query = mysql_query("select * from body_pet");
while($body = mysql_fetch_array($body_pet_query)){
$id=$body['b_id'];  ?>


<tr><th colspan='3' align='center' bgcolor='#55cfee'><font color='#000000' size='5'><? echo $body[b_type_name] ?></font><div align='right' ><button class="btn1" type="button">Hide</button>
<button class="btn2" type="button">Show</button></div></th></tr>

 <p> <tr><th>ลำดับ</th><th>ลักษณะอาการ</th><th>เลือก</th></tr></p>


<?
	$body_b_id = $body['b_id'];
	$manner_query = mysql_query("select * from manner where b_id=$body_b_id");
        $row=1;
while($manner = mysql_fetch_array($manner_query)){ ?>

<p><tr><td><? echo $row ?></td>
<td align='center'><? echo $manner[manner_name] ?></td>
<th align=center><input type='checkbox' value='<? $manner[manner_id] ?>' name='manner[]'></th>
</tr></p>

<?
    $row++;
}
	
}
?>

</table>