ช่วยดูโค้ดให้ทีครับ กรอกข้อมูลแล้ว แจ้งว่าไม่ได้ แต่บันทึกลงฐานข้อมูลครับ

<?
			include ("connect.php");
			$Username_Mem = $_POST[txtUsername_Mem];
			$Password_Mem = $_POST[txtPassword_Mem];
			$RePassword_Mem = $_POST[txtRePassword_Mem];
			$ID_Mem = $_POST[txtID_Mem];
			$Name_Mem = $_POST[txtName_Mem];
			$Sex_Mem = $_POST[txtSex_Mem];
			$Birthday_Mem = $_POST[txtBirthday_Mem];
			$Address_Mem = $_POST[txtAddress_Mem];
			$Province_Mem = $_POST[txtProvince_Mem];
			$Postcode_Mem = $_POST[txtPostcode_Mem];
			$Tel_Mem = $_POST[txtTel_Mem];
			$Email_Mem = $_POST[txtEmail_Mem];
			$Active_Mem = $_POST[txtActive_Mem];

if(trim($_POST["txtUsername_Mem"]) == "")
{
echo "<script language='JavaScript' type='text/javascript'>alert('กรุณากรอกชื่อผู้ใช้ระบบ')</script>";
echo "<script>window.location='javascript:history.go(-1)'</script>";
}
if(trim($_POST["txtPassword_Mem"]) == "")
{
echo "<script language='JavaScript' type='text/javascript'>alert('กรุณากรอกรหัสผ่าน')</script>";
echo "<script>window.location='javascript:history.go(-1)'</script>";
}  
if($_POST["txtPassword_Mem"] != $_POST["txtRePassword_Mem"])
{
echo "<script language='JavaScript' type='text/javascript'>alert('กรุณายืนยันรหัสผ่าน')</script>";
echo "<script>window.location='javascript:history.go(-1)'</script>";
}
if(trim($_POST["txtID_Mem"]) == "")
{
echo "<script language='JavaScript' type='text/javascript'>alert('กรุณากรอกเลขบัตรประชาชน')</script>";
echo "<script>window.location='javascript:history.go(-1)'</script>";
}  
if(trim($_POST["txtName_Mem"]) == "")
{
echo "<script language='JavaScript' type='text/javascript'>alert('กรุณากรอกชื่อ-นามสกุล')</script>";
echo "<script>window.location='javascript:history.go(-1)'</script>";
}
if(trim($_POST["txtSex_Mem"]) == "")
{
echo "<script language='JavaScript' type='text/javascript'>alert('กรุณาเลือกเพศ')</script>";
echo "<script>window.location='javascript:history.go(-1)'</script>";
}
if(trim($_POST["txtBirthday_Mem"]) == "")
{
echo "<script language='JavaScript' type='text/javascript'>alert('กรุณากรอกวัน เดือน ปี ที่เกิด')</script>";
echo "<script>window.location='javascript:history.go(-1)'</script>";
}
if(trim($_POST["txtAddress_Mem"]) == "")
{
echo "<script language='JavaScript' type='text/javascript'>alert('กรุณากรอกที่อยู่')</script>";
echo "<script>window.location='javascript:history.go(-1)'</script>";
}
if(trim($_POST["txtProvince_Mem"]) == "")
{
echo "<script language='JavaScript' type='text/javascript'>alert('กรุณากรอกจังหวัด')</script>";
echo "<script>window.location='javascript:history.go(-1)'</script>";
}
if(trim($_POST["txtPostcode_Mem"]) == "")
{
echo "<script language='JavaScript' type='text/javascript'>alert('กรุณากรอกรหัสไปรษณีย์')</script>";
echo "<script>window.location='javascript:history.go(-1)'</script>";
}
if(trim($_POST["txtTel_Mem"]) == "")
{
echo "<script language='JavaScript' type='text/javascript'>alert('กรุณากรอกเบอร์โทร')</script>";
echo "<script>window.location='javascript:history.go(-1)'</script>";
}
if(trim($_POST["txtEmail_Mem"]) == "")
{
echo "<script language='JavaScript' type='text/javascript'>alert('กรุณากรอกอีเมล์')</script>";
echo "<script>window.location='javascript:history.go(-1)'</script>";
}
$strSQL = "SELECT * FROM member WHERE Username_Mem = '".trim($_POST['txtUsername_Mem'])."' ";

$objQuery = mysql_query($strSQL);

$objResult = mysql_fetch_array($objQuery);

if($objResult)
{ชื่อผู้ใช้ระบบซ้ำแล้ว กรุณากรอกใหม่')</script>";
	echo "<script>window.location='javascript:history.go(-1)'</script>";
}
$strSQL = "SELECT * FROM member WHERE ID_Mem = '".trim($_POST['txtID_Mem'])."' ";

$objQuery = mysql_query($strSQL);

$objResult1 = mysql_fetch_array($objQuery);

if($objResult1)
{
	echo "<script language='JavaScript' type='text/javascript'>alert('รหัสบัตรประชาชนไม่ถูกต้อง')</script>";
	echo "<script>window.location='javascript:history.go(-1)'</script>";
}else{  
$sqlMember = "INSERT INTO member (Username_Mem,Password_Mem,ID_Mem,Name_Mem,Sex_Mem,Birthday_Mem,Address_Mem                                     ,Province_Mem,Postcode_Mem,Tel_Mem,Email_Mem,Active_Mem) VALUES ('$Username_Mem','$Password_Mem','$ID_Mem','$Name_Mem','$Sex_Mem','$Birthday_Mem'             ,'$Address_Mem','$Province_Mem','$Postcode_Mem','$Tel_Mem','$Email_Mem','No')";
			$dbqueryMember = mysql_query($sqlMember); //»ÃÐÁÇżÅ
			
			if ($dbqueryMember){
				echo "<script language='JavaScript' type='text/javascript'>alert('สมัครเสร็จแล้วครับ')</script>";
				echo "<script type='text/javascript'>window.location='Index.php'</script>";
			}else{
			echo "<script language='JavaScript' type='text/javascript'>alert('กรุณากรอกข้อมูลให้ถูกต้อง ครบทุกช่องครับ)</script>";
				echo "<script>window.location='javascript:history.go(-1)'</script>";

}
}
?>