<div id='loginbox'>
            <?php
            if(isset($_SESSION['username']) && isset($_SESSION['id'])) {
                echo "<b>Inloggad som <i>".$_SESSION['username']."</i></b><br />";
                echo "<a href='index.php?logout'>Logga ut</a>";
            }
            else
            {
                    if(isset($_POST['submit-login'])) {
                        $username = mysql_real_escape_string(strtolower(trim($_POST['username'])));
                        $password = mysql_real_escape_string($_POST['password']);

                        $get_data = mysql_query("SELECT id FROM members WHERE username='{$_POST['username']}' AND password='{$_POST['password']}'");
                        if(mysql_num_rows($get_data) == 0) {
                            $reg_error_login[] = 0;
                        }
                        if(!$reg_error_login) {
                            $fetch = mysql_fetch_array($get_data);
                            $_SESSION['username'] = $username;
                            $_SESSION['id'] = $fetch['id'];
                            header("Location: ".$_SERVER['REQUEST_URI']);
                        }
                    }
                    else
                    {
                        for($i=0;$i<2;$i++) {
                            $back[$i] = "";
                        }
                    }
                    $log_error = "Fel användarnamn eller lösenord.";
                ?>
                                <?php
                    if(isset($reg_error_login)) {
                        echo "Fel användarnamn eller lösenord.";
                        $back['0'] = $_POST['username'];
                        $back['1'] = $_POST['password'];
                    }
                ?>
                <form action='' method='POST'>
                Användarnamn:<input type='text' name='username' value='<?php echo $back[0]; ?>'><br />
                Lösenord:<input type='password' size='16' name='password' value='<?php echo $back[1]; ?>'>
                <input type='submit' name='submit-login' value='Logga in'>
                </form>
            <?php } ?>