Login PHP

<?php
if(isset($_POST["Login"])){
$usr=$_POST["user"];
$pas=$_POST["pass"];

$sql1="select * from `$tbadmin` where `username`='$usr' and `password`='$pas' and `status`='Aktif'";

if(getJum($conn,$sql1)>0){
$d=getField($conn,$sql1);
$kode=$d["kode_admin"];
$nama=$d["username"];
if($usr==$nama){
   $_SESSION["cid"]=$kode;
   $_SESSION["cnama"]=$nama;
   $_SESSION["cstatus"]="Administrator";
echo "<script>alert('Otentikasi ".$_SESSION["cstatus"]." ".$_SESSION["cnama"]." (".$_SESSION["cid"].") berhasil Login!');
document.location.href='index.php?mnu=home';</script>";
        }
else{
session_destroy();
echo "<script>alert('Otentikasi GAGAL Login!,Silakan cek data Anda kembali...');
document.location.href='index.php?mnu=login';</script>";
}
}

else{
session_destroy();
echo "<script>alert('Otentikasi Login GAGAL !,Silakan cek data Anda kembali...');
document.location.href='index.php?mnu=login';</script>";
}
}


?>

Load otomatis

Javascript :

<script type="text/javascript">
function Ajax(){
var $http,$self = arguments.callee;

if (window.XMLHttpRequest) {$http = new XMLHttpRequest();}
else if (window.ActiveXObject) {
try {$http = new ActiveXObject('Msxml2.XMLHTTP');}
catch(e) {$http = new ActiveXObject('Microsoft.XMLHTTP');}
}

if ($http) {
$http.onreadystatechange = function(){
if (/4|^complete$/.test($http.readyState)) {
document.getElementById('txtAuto').innerHTML = $http.responseText;
setTimeout(function(){$self();}, 1000);
}
};
$http.open('GET', 'load.php' + '?' + new Date().getTime(), true);
$http.send(null);
}
}
</script>
<script type="text/javascript">setTimeout(function() {Ajax();}, 1000);</script>


<label id="txtAuto">...</label>
//==================================================================//