ช่วยหน่อยครับ ใช้ ie กับ firefox มันไม่รีเฟรชหน้าตอนล๊อกอินไห้ครับ

if($claim=='1'){
									echo '<meta http-equiv="refresh" content="0;location.href="admin/index.php">';

if($claim=='1'){
		echo '<script>location.href="admin/index.php";</script>';

echo "<script>window.location=\"admin/index.php\"</script>";

            echo("<script language='javascript1.2'>");
            echo("window.location='admin/index.php';");
            echo("</script>"); }

else { echo "<script>alert(\"" .  $claim  . "\");</script>"; }

<?php 
session_start();
?>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?php
include"connect.php";

if(isset($LoginUser)){
		if($_POST["txtUser"]!=null){
			$txtUser=$_POST[txtUser];
			$txtPass=$_POST[txtPass];
			$sql="SELECT * FROM users WHERE U_USERNAME ='$txtUser' AND U_PASS ='$txtPass' ";
							$result=mysql_query($sql);
							$row=mysql_num_rows($result);
							if($row==1){
								$data=mysql_fetch_array($result);
								$frefix=$data[U_PREFIX];
								$user=$data[U_USERNAME];
								$Fname=$data[U_NAME];
								$Lname=$data[U_LAST];
								$claim=$data[U_CLAIM];
								$u_id=$data[U_ID];
								session_register("frefix","user","Fname","Lname","claim","u_id");
							echo $claim;  /*  ค่านี้มาปกติครับ */
							if($claim=='1'){
									echo ("<script language='javascript1.2'>");
                                                                        echo("window.location='admin/index.php';");
                                                                         echo("</script>"); 
								}else if($claim=='2'){
									echo '<meta http-equiv="refresh" content="0;url=staff/index.php">';
								}else if($claim=='3'){
								echo '<meta http-equiv="refresh" content="0;url=teacher/index.php">';
								}
								else if($claim=='5'){
								echo '<meta http-equiv="refresh" content="0;url=student/index.php">';
								}
								
							
						    }else{
										echo '<script language ="JavaScript">
											alert("ชื่อผู้ใช้หรือรหัสผ่าน ไม่ถูกต้อง")
											</script>';
											echo '<meta http-equiv="refresh" content="0;url=index.php">';
							}
		}
		
}
?>

<?php 
session_start();
?>

<?php
include"connect.php";

if(isset($LoginUser)){


echo ("<script>");
echo("alert('5678');");
echo("</script>");

echo ("<script language='javascript1.2'>");
echo("window.location='admin/index.php';");
echo("</script>");


		
}
?>

							if($row>0){
								$data=mysql_fetch_array($result);
								$frefix=$data[U_PREFIX];
								$user=$data[U_USERNAME];
								$Fname=$data[U_NAME];
								$Lname=$data[U_LAST];
								$claim=$data[U_CLAIM];
								$u_id=$data[U_ID];
								session_register("frefix","user","Fname","Lname","claim","u_id");
							
								if($claim==1){
									echo '<script>location.href="admin/index.php"</script>';
								}else if($claim==2){
									echo '<script>location.href="staff/index.php"</script>';
								}else if($claim==3){
									echo '<script>location.href="teacher/index.php"</script>';
								}
								else if($claim==5){
									echo '<script>location.href="student/index.php"</script>';
								}								
							
						    }else{
										echo '<script>	alert("ชื่อผู้ใช้หรือรหัสผ่าน ไม่ถูกต้อง");location.href="index.php";</script>';
							}

echo "<pre>";
print_r($_SESSION);
echo "</pre>";

if(!empty($_POST['LoginUser'])){

$data = array('frefix'=>$frefix,'user'=>$user,'Fname'=>$Fname,'Lname'=>$Lname,'claim'=>$claim,'u_id'=$u_id);
$_SESSION['youe_session_name'] = $data;

Array
(
    [frefix] => 1
    [user] => admin
    [Fname] => Fari, Mr
    [Lname] => Jiwang
    [claim] => 1
    [u_id] => 11
)