[Plugin: User Photo] Code for comments WITH fall-back on avatars?

So you can do something like this: <?php echo get_avatar($comment->comment_author_email) ?> if the “Override Avatar with User Photo” is turned on; this option exists in the latest versions, so if you don’t see it where it should be, please upgrade.

Do you know How can implement that to this code:

<?php
/*
Plugin Name: Autor Exposed
Plugin URI: http://colorlightstudio.com/2008/03/14/wordpress-plugin-author-exposed/
Description: Simple and elegant way to get more information about author.
Version: 1.0
Author: Igor Penjivrag
Author URI: http://colorlightstudio.com
*/

/* Copyright 2008 Igor Penjivrag (email : [email protected])

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/

function author_exposed() {
global $authordata;
$nick = get_the_author();

// Gravatar Photo

$mail = get_the_author_email();
$get_avatar= ‘http://www.gravatar.com/avatar.php?gravatar_id=&#8217; .md5($mail);

// Get ID for hidden DIV

$div_id = ‘a’.get_the_ID();

// Hidden DIV output

$author_posts_link = get_author_posts_url($authordata->ID, $authordata->user_nicename );

$hidden_div = ‘<span id=”‘.$div_id.'” class=”mydiv” style=”display:none;”>

<img src=”‘.$get_avatar.'” alt=”gravatar” /><span class=”ae_close”>close</span><span class=”ae_top”><b>Author: ‘.get_the_author().'</b></span>

<span class=”ae_body”><b>First Name</b>: ‘.get_the_author_firstname().’
</span>
<span class=”ae_about”><b>About:</b> ‘.get_the_author_description().'</span><span class=”ae_body”>See Authors Posts (‘.get_the_author_posts().’)</span></span>’;

// Show it

echo (‘‘.$nick.’‘.$hidden_div);

}

// Add JavaScript and Styles to header

add_action(‘wp_head’, ‘add_head’);
function add_head() {
echo ‘<script type=”text/javascript” src=”‘.get_option(siteurl).’/wp-content/plugins/author_exposed/javascript/skripta.js”></script><link rel=”stylesheet” href=”‘.get_option(‘siteurl’).’/wp-content/plugins/author_exposed/css/ae_style.css” type=”text/css” />’;
}

?>