งง ตัวเองเรื่องง่ายทำไมมันไม่โชว์ข้อมูลช่วยดูหน่อยครับ ระบบ ล็อคอินนะครับ พอกดล็อคอินเสร็จ ตรวจสอบเสร็จ

<?php session_start();?>
<?php require_once('Connections/connlogistic2.php'); ?>
<?php
if(isset($HTTP_POST_VARS["Submit"])=="Login")
{
if($username==""||$password=="")
{
header("Location: index.php?e1=e1");
}
mysql_select_db($database_connlogistic2, $connlogistic2);
mysql_query("SET NAMES TIS620");
$query_rsUser = "SELECT * FROM member WHERE username='$username' and password='$password'";
$rsUser = mysql_query($query_rsUser,$connlogistic2) or die(mysql_error());
$row_rsUser = mysql_fetch_assoc($rsUser);
$user_ID=$row_rsUser['user_ID'];
$rankCheck=$row_rank['rank'];
$result=mysql_db_query($dbname,$sql);
$num=mysql_num_rows($rsUser);
mysql_close();
if($num<=0) {
echo "<h3>ERROR : Username หรือ Password ไม่ถูกต้อง </h3>";
echo "<meta http-equiv='refresh' content='3;URL=index.php'>";
}
else{
	$_SESSION['rank'] = $row_rsUser['rank'];
	$_SESSION['user_ID']	=	$row_rsUser['user_ID'];
	$_SESSION['firstname']	=	$row_rsUser['firstname'];
	$_SESSION['lastname']	=	$row_rsUser['lastname'];
	header("Location: home.php");
} 
}
?>

<?php session_start();?>
<form id="logout" name="logout" method="post" action="index.php">
<div align="center"><? echo " <font size='2' color='#990099'><strong><center> ยินดีต้อนรับ</strong><br>".$_SESSION['rank']." ".$_SESSION['firstname']." ".$_SESSION['lastname']."<center></font>" ?> 
<p>&nbsp;</p>
<p>
<label>
<input type="submit" name="Submit" id="Submit" value="logout" />
</label>
</p>
</div>
</form>

session_start();