<?php if ($_SESSION['user_group'] == 'Guest'): ?>
<div id="members"><p>Welcome Guest! Please Login or <a href="register.htm">Register</a></p>
    <form name="login" action="_php/login.php" method="post">
    Username: <input name="user" type="text" />
    Password: <input name="pass" type="password" />
    <input type="image" src="_images/login.png"/>
    </form>
</div>
<?php endif; ?>

<?php if ($_SESSION['user_group'] == 'Member'): ?>
<div id="members"><p>Welcome <?php echo $_SESSION['username']; ?>! (Member) <a href="_php/logout.php">Logout</a></p></div>
<?php endif; ?>

<?php if ($_SESSION['user_group'] == 'Admin'): ?>
<div id="members"><p>Welcome <?php echo $_SESSION['username']; ?>! (Admin) | <a href="members.php">Members List</a> | <a href="newsletter.php">Send Newsletter</a> | <a href="_php/logout.php">Logout</a> |</p></div>
<?php endif; ?>