function db_login() {
    $server = "server";
    $username = "username";
    $password = "password";

    global $link;

    $link = @mysql_connect ($server, $username, $password)
    or die (mysql_error());

    if (!@mysql_select_db("database", $link)) {
        echo "<p>There has been an error. This is the error message:</p>";
        echo "<p><strong>" . mysql_error() . "</strong></p>";
        echo "Please Contact Your Systems Administrator with the details";
    }
}

if ($_SESSION['logged_in'] == 1) {
    echo "<a href=\"myaccount.php\">My Account</a><br />\n";

    // Check if the user is an admin
    // If yes, display the 'Admin Panel' link

    $link = db_login();

    $user = $_SESSION['user'];

    $sql_check_admin = "SELECT admin FROM users WHERE (email = '$user')";

    $result = mysql_query($sql_check_admin, $link);
    check_result($result);

    $row_admin = mysql_fetch_array($result);

    $admin = $row_admin['admin'];

    if ($admin == 1)
        echo "<a href=\"/admin\">Admin Panel</a><br />";

    mysql_close($link);
}