ช่วยดูโค็ตให้หน่อย เพิ่้มข้อมูลไม่ได้ แล้วก็ ข้อมูลที่เพิ่มไม่แสดง ช่วยหน่อยครับ

<form id="form1" name="form1" method="post" action="<?=$_SERVER["PHP_SELF"];?>">
       
	   รหัสปาล์ม :
<select name="id_p" class="textfieldRequiredState" id="id_p" onchange="Show(this);" >
<option selected="selected">Select One</option>
<option value="01">01</option>
<option value="02">02</option>
</select>
</p>
<p id="p1" class="hide" >
ประเภท :<input type="text" name="type_p" value="ปาล์มร่วง" readonly>
</p>
<p id="p2" class="hide" >
ประเภท :<input type="text" name="type_p" value="ปาล์มทะลาย" readonly>
</p>
  <p>
  เกรด :
  <select name="grad" id="grad">
    <option>--กรุณาเลือก--</option>
    <option>A</option>
    <option>B</option>
    <option>C</option>
    <option>D</option>
  </select>
  </p>
  <p>วันที่ : </b></font><input name="date" id="date" size="10" readonly> 
    <a href="javascript:displayDatePicker('date')">
<img border="0" src="formcal.gif" width="16" height="16"></a>
<?
date_default_timezone_set('Asia/Bangkok');
$login_time =date("H:i:s");
echo"<br><br>เวลา :<input type=text name=time value=$login_time readonly>";
?>
  </p>
  <p>
    <label for="textfield">ราคา :</label>
    <input type="text" name="price" id="price">
  </p>
  <p>
    <input type="submit" name="button" id="button" value="Submit">
    &nbsp;
    <input type="reset" name="button2" id="button2" value="Cancel">
  </p>
  <p>&nbsp;</p>
</form>



<?
$objConnect = mysql_connect("localhost","root","mysql") or die("Error Connect to Database");
$objDB = mysql_select_db("test");

//*** Add Condition ***//
if($_POST["hdnCmd"] == "Add")
{
	$strSQL = "INSERT INTO plam ";
	$strSQL .="(id_p,type_p,grad,date,time,price) ";
	$strSQL .="VALUES ";
	$strSQL .="('".$_POST["id_p"]."','".$_POST["type_p"]."' ";
	$strSQL .=",'".$_POST["grad"]."' ";
	$strSQL .=",'".$_POST["date"]."','".$_POST["time"]."' ";
	$strSQL .=",'".$_POST["price"]."') ";
	$objQuery = mysql_query($strSQL);
	if(!$objQuery)
	{
		echo "Error Save [".mysql_error()."]";
	}
	//header("location:$_SERVER[PHP_SELF]");
	//exit();
}
//*** Update Condition ***//
if($_POST["hdnCmd"] == "Update")
{
	$strSQL = "UPDATE plam SET ";
	$strSQL .="id_p = '".$_POST["id_p"]."' ";
	$strSQL .=",type_p = '".$_POST["type_p"]."' ";
	$strSQL .=",grad = '".$_POST["grad"]."' ";
	$strSQL .=",date = '".$_POST["date"]."' ";
	$strSQL .=",time = '".$_POST["time"]."' ";
	$strSQL .=",price = '".$_POST["price"]."' ";
	$strSQL .="WHERE id = '".$_POST["hdnEditid"]."' ";
	$objQuery = mysql_query($strSQL);
	if(!$objQuery)
	{
		echo "Error Update [".mysql_error()."]";
	}
	//header("location:$_SERVER[PHP_SELF]");
	//exit();
}

//*** Delete Condition ***//
if($_GET["Action"] == "Del")
{
	$strSQL = "DELETE FROM plam ";
	$strSQL .="WHERE id = '".$_GET["id"]."' ";
	$objQuery = mysql_query($strSQL);
	if(!$objQuery)
	{
		echo "Error Delete [".mysql_error()."]";
	}
	//header("location:$_SERVER[PHP_SELF]");
	//exit();
}

$strSQL = "SELECT * FROM plam";
$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
?>
<form name="frmMain" method="post" action="<?=$_SERVER["PHP_SELF"];?>">
<input type="hidden" name="hdnCmd" value="">
<table width="600" border="1">
  <tr>
    <th width="91"> <div align="center">CustomerID </div></th>
    <th width="98"> <div align="center">Name </div></th>
    <th width="198"> <div align="center">Email </div></th>
    <th width="97"> <div align="center">CountryCode </div></th>
    <th width="59"> <div align="center">Budget </div></th>
    <th width="71"> <div align="center">Used </div></th>
    <th width="30"> <div align="center">Edit </div></th>
    <th width="30"> <div align="center">Delete </div></th>
  </tr>
<?
while($objResult = mysql_fetch_array($objQuery))
{
?>

  <?
	if($objResult["id"] == $_GET["id"] and $_GET["Action"] == "Edit")
	{
  ?>
  <?
	}
  else
	{
  ?>
  <tr>
    <td><div align="center"><?=$objResult["id_p"];?></div></td>
    <td><?=$objResult["type_p"];?></td>
    <td><?=$objResult["grad"];?></td>
    <td><div align="center"><?=$objResult["date"];?></div></td>
    <td align="right"><?=$objResult["time"];?></td>
    <td align="right"><?=$objResult["price"];?></td>
    <td align="center"><a href="<?=$_SERVER["PHP_SELF"];?>?Action=Edit&id=<?=$objResult["id"];?>">Edit</a></td>
	<td align="center"><a href="JavaScript:if(confirm('Confirm Delete?')==true){window.location='<?=$_SERVER["PHP_SELF"];?>?Action=Del&id=<?=$objResult["id"];?>';}">Delete</a></td>
  </tr>
  <?
	}
  ?>
<?
}
?>
</table>
</form>
<?
mysql_close($objConnect);
?>