Wordpress custom login code

<div id="login-register-password">

    <?php global $user_ID, $user_identity; get_currentuserinfo(); if (!$user_ID) { ?>

    <ul class="tabs_login">
        <li class="active_login"><a href="#tab1_login">Login</a></li>
        <li><a href="#tab2_login">Register</a></li>
        <li><a href="#tab3_login">Forgot?</a></li>
    </ul>
    <div class="tab_container_login">
        <div id="tab1_login" class="tab_content_login">

            <?php $register = $_GET['register']; $reset = $_GET['reset']; if ($register == true) { ?>

            <h3>Success!</h3>
            <p>Check your email for the password and then return to log in.</p>

            <?php } elseif ($reset == true) { ?>

            <h3>Success!</h3>
            <p>Check your email to reset your password.</p>

            <?php } else { ?>

            <h3>Have an account?</h3>
            <p>Log in or sign up! It&rsquo;s fast &amp; <em>free!</em></p>

            <?php } ?>

            <form method="post" action="<?php bloginfo('url') ?>/wp-login.php" class="wp-user-form">
                <div class="username">
                    <label for="user_login"><?php _e('Username'); ?>: </label>
                    <input type="text" name="log" value="<?php echo esc_attr(stripslashes($user_login)); ?>" size="20" id="user_login" tabindex="11" />
                </div>
                <div class="password">
                    <label for="user_pass"><?php _e('Password'); ?>: </label>
                    <input type="password" name="pwd" value="" size="20" id="user_pass" tabindex="12" />
                </div>
                <div class="login_fields">
                    <div class="rememberme">
                        <label for="rememberme">
                            <input type="checkbox" name="rememberme" value="forever" checked="checked" id="rememberme" tabindex="13" /> Remember me
                        </label>
                    </div>
                    <?php do_action('login_form'); ?>
                    <input type="submit" name="user-submit" value="<?php _e('Login'); ?>" tabindex="14" class="user-submit" />
                    <input type="hidden" name="redirect_to" value="<?php echo $_SERVER['REQUEST_URI']; ?>" />
                    <input type="hidden" name="user-cookie" value="1" />
                </div>
            </form>
        </div>
        <div id="tab2_login" class="tab_content_login" style="display:none;">
            <h3>Register for this site!</h3>
            <p>Sign up now for the good stuff.</p>
            <form method="post" action="<?php echo site_url('wp-login.php?action=register', 'login_post') ?>" class="wp-user-form">
                <div class="username">
                    <label for="user_login"><?php _e('Username'); ?>: </label>
                    <input type="text" name="user_login" value="<?php echo esc_attr(stripslashes($user_login)); ?>" size="20" id="user_login" tabindex="101" />
                </div>
                <div class="password">
                    <label for="user_email"><?php _e('Your Email'); ?>: </label>
                    <input type="text" name="user_email" value="<?php echo esc_attr(stripslashes($user_email)); ?>" size="25" id="user_email" tabindex="102" />
                </div>
                <div class="login_fields">
                    <?php do_action('register_form'); ?>
                    <input type="submit" name="user-submit" value="<?php _e('Sign up!'); ?>" class="user-submit" tabindex="103" />
                    <?php $register = $_GET['register']; if($register == true) { echo '<p>Check your email for the password!</p>'; } ?>
                    <input type="hidden" name="redirect_to" value="<?php echo $_SERVER['REQUEST_URI']; ?>?register=true" />
                    <input type="hidden" name="user-cookie" value="1" />
                </div>
            </form>
        </div>
        <div id="tab3_login" class="tab_content_login" style="display:none;">
            <h3>Lose something?</h3>
            <p>Enter your username or email to reset your password.</p>
            <form method="post" action="<?php echo site_url('wp-login.php?action=lostpassword', 'login_post') ?>" class="wp-user-form">
                <div class="username">
                    <label for="user_login" class="hide"><?php _e('Username or Email'); ?>: </label>
                    <input type="text" name="user_login" value="" size="20" id="user_login" tabindex="1001" />
                </div>
                <div class="login_fields">
                    <?php do_action('login_form', 'resetpass'); ?>
                    <input type="submit" name="user-submit" value="<?php _e('Reset my password'); ?>" class="user-submit" tabindex="1002" />
                    <?php $reset = $_GET['reset']; if($reset == true) { echo '<p>A message will be sent to your email address.</p>'; } ?>
                    <input type="hidden" name="redirect_to" value="<?php echo $_SERVER['REQUEST_URI']; ?>?reset=true" />
                    <input type="hidden" name="user-cookie" value="1" />
                </div>
            </form>
        </div>
    </div>

    <?php } else { // is logged in ?>

    <div class="sidebox">
        <h3>Welcome, <?php echo $user_identity; ?></h3>
        <div class="usericon">
            <?php global $userdata; get_currentuserinfo(); echo get_avatar($userdata->ID, 60); ?>

        </div>
        <div class="userinfo">
            <p>You&rsquo;re logged in as <strong><?php echo $user_identity; ?></strong></p>
            <p>
                <a href="<?php echo wp_logout_url('index.php'); ?>">Log out</a> |
                <?php if (current_user_can('manage_options')) {
                    echo '<a href="' . admin_url() . '">' . __('Admin') . '</a>'; } else {
                    echo '<a href="' . admin_url() . 'profile.php">' . __('Profile') . '</a>'; } ?>

            </p>
        </div>
    </div>

    <?php } ?>

</div>