Can i change the topic title?

<?php
/***********************************************************************

  Copyright (C) 2002-2005  Rickard Andersson (rickard@punbb.org)

  This file is part of PunBB.

  PunBB 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.

  PunBB 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., 59 Temple Place, Suite 330, Boston,
  MA  02111-1307  USA

************************************************************************/


define('PUN_ROOT', './');
require PUN_ROOT.'include/common.php';


if ($pun_user['g_read_board'] == '0')
    message($lang_common['No view']);


// Load the index.php language file
require PUN_ROOT.'lang/'.$pun_user['language'].'/index.php';

$page_title = pun_htmlspecialchars($pun_config['o_board_title']);
define('PUN_ALLOW_INDEX', 1);
require PUN_ROOT.'header.php';

// Print the categories and forums
$result = $db->query('SELECT c.id AS cid, c.cat_name, f.id AS fid, f.forum_name, f.forum_desc, f.redirect_url, f.moderators, f.num_topics, f.num_posts, f.last_post, f.last_post_id, f.last_poster, t.subject FROM '.$db->prefix.'categories AS c INNER JOIN '.$db->prefix.'forums AS f ON c.id=f.cat_id INNER JOIN '.$db->prefix.'topics AS t ON t.last_post_id=f.last_post_id LEFT JOIN '.$db->prefix.'forum_perms AS fp ON (fp.forum_id=f.id AND fp.group_id='.$pun_user['g_id'].') WHERE fp.read_forum IS NULL OR fp.read_forum=1 ORDER BY c.disp_position, c.id, f.disp_position', true) or error('Unable to fetch category/forum list', __FILE__, __LINE__, $db->error());

$cur_category = 0;
$cat_count = 0;
while ($cur_forum = $db->fetch_assoc($result))
{
    $moderators = '';

    if ($cur_forum['cid'] != $cur_category)    // A new category since last iteration?
    {
        if ($cur_category != 0)
            echo "\t\t\t".'</tbody>'."\n\t\t\t".'</table>'."\n\t\t".'</div>'."\n\t".'</div>'."\n".'</div>'."\n\n";

        ++$cat_count;

?>
<div id="idx<?php echo $cat_count ?>" class="blocktable">
    <h2><span><?php echo pun_htmlspecialchars($cur_forum['cat_name']) ?></span></h2>
    <div class="box">
        <div class="inbox">
            <table cellspacing="0">
            <thead>
                <tr>
                    <th class="tcl" scope="col"><?php echo $lang_common['Forum'] ?></th>
                    <th class="tc2" scope="col"><?php echo $lang_index['Topics'] ?></th>
                    <th class="tc3" scope="col"><?php echo $lang_common['Posts'] ?></th>
                    <th class="tcr" scope="col"><?php echo $lang_common['Last post'] ?></th>
                </tr>
            </thead>
            <tbody>
<?php

        $cur_category = $cur_forum['cid'];
    }

    $item_status = '';
    $icon_text = $lang_common['Normal icon'];
    $icon_type = 'icon';

    // Are there new posts?
    if (!$pun_user['is_guest'] && $cur_forum['last_post'] > $pun_user['last_visit'])
    {
        $item_status = 'inew';
        $icon_text = $lang_common['New icon'];
        $icon_type = 'icon inew';
    }

    // Is this a redirect forum?
    if ($cur_forum['redirect_url'] != '')
    {
        $forum_field = '<h3><a href="'.pun_htmlspecialchars($cur_forum['redirect_url']).'" title="'.$lang_index['Link to'].' '.pun_htmlspecialchars($cur_forum['redirect_url']).'">'.pun_htmlspecialchars($cur_forum['forum_name']).'</a></h3>';
        $num_topics = $num_posts = ' ';
        $item_status = 'iredirect';
        $icon_text = $lang_common['Redirect icon'];
        $icon_type = 'icon';
    }
    else
    {
        $forum_field = '<h3><a href="viewforum.php?id='.$cur_forum['fid'].'">'.pun_htmlspecialchars($cur_forum['forum_name']).'</a></h3>';
        $num_topics = $cur_forum['num_topics'];
        $num_posts = $cur_forum['num_posts'];
    }

    if ($cur_forum['forum_desc'] != '')
        $forum_field .= "\n\t\t\t\t\t\t\t\t".$cur_forum['forum_desc'];


// Display the last topic
    $idm = $cur_forum['subject'];
    if(strlen($idm) > 30) {
        $idmComp = str_replace('"', "''", $idm);
        $idm = substr($idm, 0, 30).'...';
    } else
        $idmComp = '';
 
    // If there is a last_post/last_poster.
    if ($cur_forum['last_post'] != '') {
        $idmT = (isset($idmComp)) ? ' title="'.$idmComp.'"' : '';
        $last_post = format_time($cur_forum['last_post']).'<br /><a href="viewtopic.php?pid='.$cur_forum['last_post_id'].'#p'.$cur_forum['last_post_id'].'"'.$idmT.'><em>'.$idm.'</em></a><br /><span class="byuser">'.$lang_common['by'].' '.pun_htmlspecialchars($cur_forum['last_poster']).'</span>';
    } else
        $last_post = ' ';

    if ($cur_forum['moderators'] != '')
    {
        $mods_array = unserialize($cur_forum['moderators']);
        $moderators = array();

        while (list($mod_username, $mod_id) = @each($mods_array))
            $moderators[] = '<a href="profile.php?id='.$mod_id.'">'.pun_htmlspecialchars($mod_username).'</a>';

        $moderators = "\t\t\t\t\t\t\t\t".'<p><em>('.$lang_common['Moderated by'].'</em> '.implode(', ', $moderators).')</p>'."\n";
    }

?>
                 <tr<?php if ($item_status != '') echo ' class="'.$item_status.'"'; ?>>
                    <td class="tcl">
                        <div class="intd">
                            <div class="<?php echo $icon_type ?>"><div class="nosize"><?php echo $icon_text ?></div></div>
                            <div class="tclcon">
                                <?php echo $forum_field."\n".$moderators ?>
                            </div>
                        </div>
                    </td>
                    <td class="tc2"><?php echo $num_topics ?></td>
                    <td class="tc3"><?php echo $num_posts ?></td>
                    <td class="tcr"><?php echo $last_post ?></td>
                </tr>
<?php

}

// Did we output any categories and forums?
if ($cur_category > 0)
    echo "\t\t\t".'</tbody>'."\n\t\t\t".'</table>'."\n\t\t".'</div>'."\n\t".'</div>'."\n".'</div>'."\n\n";
else
    echo '<div id="idx0" class="block"><div class="box"><div class="inbox"><p>'.$lang_index['Empty board'].'</p></div></div></div>';


// Collect some statistics from the database
$result = $db->query('SELECT COUNT(id)-1 FROM '.$db->prefix.'users') or error('Unable to fetch total user count', __FILE__, __LINE__, $db->error());
$stats['total_users'] = $db->result($result);

$result = $db->query('SELECT id, username FROM '.$db->prefix.'users ORDER BY registered DESC LIMIT 1') or error('Unable to fetch newest registered user', __FILE__, __LINE__, $db->error());
$stats['last_user'] = $db->fetch_assoc($result);

$result = $db->query('SELECT SUM(num_topics), SUM(num_posts) FROM '.$db->prefix.'forums') or error('Unable to fetch topic/post count', __FILE__, __LINE__, $db->error());
list($stats['total_topics'], $stats['total_posts']) = $db->fetch_row($result);

?>
<div id="brdstats" class="block">
    <h2><span><?php echo $lang_index['Board info'] ?></span></h2>
    <div class="box">
        <div class="inbox">
            <dl class="conr">
                <dt><strong><?php echo $lang_index['Board stats'] ?></strong></dt>
                <dd><?php echo $lang_index['No of users'].': <strong>'. $stats['total_users'] ?></strong></dd>
                <dd><?php echo $lang_index['No of topics'].': <strong>'.$stats['total_topics'] ?></strong></dd>
                <dd><?php echo $lang_index['No of posts'].': <strong>'.$stats['total_posts'] ?></strong></dd>
            </dl>
            <dl class="conl">
                <dt><strong><?php echo $lang_index['User info'] ?></strong></dt>
                <dd><?php echo $lang_index['Newest user'] ?>: <a href="profile.php?id=<?php echo $stats['last_user']['id'] ?>"><?php echo pun_htmlspecialchars($stats['last_user']['username']) ?></a></dd>
<?php

if ($pun_config['o_users_online'] == '1')
{
    // Fetch users online info and generate strings for output
    $num_guests = 0;
    $users = array();
    $result = $db->query('SELECT user_id, ident FROM '.$db->prefix.'online WHERE idle=0 ORDER BY ident', true) or error('Unable to fetch online list', __FILE__, __LINE__, $db->error());

    while ($pun_user_online = $db->fetch_assoc($result))
    {
        if ($pun_user_online['user_id'] > 1)
            $users[] = "\n\t\t\t\t".'<dd><a href="profile.php?id='.$pun_user_online['user_id'].'">'.pun_htmlspecialchars($pun_user_online['ident']).'</a>';
        else
            ++$num_guests;
    }

    $num_users = count($users);
    $date = getdate(time());
    $todaystamp = mktime(0,0,0, $date['mon'], $date['mday'], $date['year']);

    $result = $db->query('SELECT username, id, last_visit from '.$db->prefix.'users WHERE last_visit >= \''.$todaystamp.'\' ORDER by last_visit DESC') or error('Impossible de retrouver la liste des utilisateurs en ligne aujourd\'hui', __FILE__, __LINE__, $db->error());

    $users_today = array();
    while ($pun_user_online_today = $db->fetch_assoc($result))
        $users_today[] .=  "\n\t\t\t\t".'<dd><a href="profile.php?id='.$pun_user_online_today['id'].'" title="Dernière visite de '.$pun_user_online_today['username'].' : '.format_time($pun_user_online_today['last_visit']).'">'.$pun_user_online_today['username'].'</a>';
        
    $num_users_today = count($users_today);
    echo "\t\t\t\t".'<dd>'.$lang_index['Users online'].': <strong>'.$num_users.'</strong></dd>'."\n\t\t\t\t".'<dd>'.$lang_index['Users today'].': <strong>'.$num_users_today.'</strong></dd>'."\n\t\t\t\t".'<dd>'.$lang_index['Guests online'].': <strong>'.$num_guests.'</strong></dd>'."\n\t\t\t".'</dl>'."\n";

    if ($num_users > 0)
        echo "\t\t\t".'<dl id="onlinelist" class= "clearb">'."\n\t\t\t\t".'<dt><strong>'.$lang_index['Online'].': </strong></dt>'."\t\t\t\t".implode(',</dd> ', $users).'</dd>'."\n\t\t\t".'</dl>'."\n";
    else
        echo "\t\t\t".'<div class="clearer"></div>'."\n";

    echo "\t\t\t".'<dl id="onlinetodaylist">'."\n\t\t\t\t".'<dt><strong>'.$lang_index['Online today'].': </strong></dt>';
    if ($num_users_today > 0) 
        echo implode(',</dd> ', $users_today).'</dd>'."\n\t\t\t".'</dl>'."\n";
    else
        echo '<dd><em>aucun</em></dd>'."\n\t\t\t".'</dl>'."\n";

}
else
    echo "\t\t".'</dl>'."\n\t\t\t".'<div class="clearer"></div>'."\n";


?>
        </div>
    </div>
</div>
<?php

$footer_style = 'index';
require PUN_ROOT.'footer.php';