problem s quick reply

#
#-----[ OPEN ]------------------------------------------
#
viewtopic.php

#
#-----[ FIND ]------------------------------------------
#
$template->pparse('body');

include($phpbb_root_path . 'includes/page_tail.'.$phpEx);

#
#-----[ BEFORE, ADD ]------------------------------------
#
//
// Quick Reply Mod
//
if ( ((!$is_auth['auth_reply']) or ($forum_topic_data['forum_status'] == FORUM_LOCKED) or ($forum_topic_data['topic_status'] == TOPIC_LOCKED)) and ($userdata['user_level'] != ADMIN) )
{
   $quick_reply_form = "";
}
else
{
   if ( $can_watch_topic && $is_watching_topic )
   {
      $notify = 1;
   }
   else
   {
      $notify = $userdata['user_notify'];
   }
   $bbcode_uid = $postrow[$total_posts - 1]['bbcode_uid'];
   $last_poster = $postrow[$total_posts - 1]['username'];
   $last_msg = $postrow[$total_posts - 1]['post_text'];
   $last_msg = str_replace(":1:$bbcode_uid", "", $last_msg);
   $last_msg = str_replace(":u:$bbcode_uid", "", $last_msg);
   $last_msg = str_replace(":o:$bbcode_uid", "", $last_msg);
   $last_msg = str_replace(":$bbcode_uid", "", $last_msg);
   $last_msg = str_replace("'", "'", $last_msg);
   $last_msg = "[QUOTE=\"$last_poster\"]" . $last_msg . "[/QUOTE]";
   $quick_reply_form = "
   <script language='JavaScript' type='text/javascript'>
      function checkForm() {
         formErrors = false;
         document.post.message.value = '';
         if (document.post.input.value.length < 2) {
            formErrors = '" . $lang['Empty_message'] . "';
         }
         if (formErrors) {
            alert(formErrors);
            return false;
         } else {
            if (document.post.quick_quote.checked) {
               document.post.message.value = document.post.last_msg.value;
            }
            document.post.message.value += document.post.input.value;
            return true;
         }
      }
   </script>
   <form action='".append_sid("posting.$phpEx")."' method='post' name='post' onsubmit='return checkForm(this)'>
   <span class='genmed'><b>".$lang["Quick_Reply"].":</b><br />";

   if (!$userdata['session_logged_in'])
   {
      $quick_reply_form .= $lang['Username'] . ":&nbsp;<input class='post' type='text' name='username' size='25' maxlength='25' value='' /><br />";
   }

   $quick_reply_form .= "<textarea name='input' rows='10' cols='50' wrap='virtual' class='post''></textarea><br />
   <input type='checkbox' name='quick_quote' />".$lang["Quick_quote"]."<br />
   <input type='checkbox' name='attach_sig' checked='checked' />".$lang["Attach_signature"]."<br />
   <input type='hidden' name='mode' value='reply' />
   <input type='hidden' name='sid' value='" . $userdata['session_id'] . "' />
   <input type='hidden' name='t' value='" . $topic_id . "' />
   <input type='hidden' name='message' value='' />
   <input type='hidden' name='notify' value=" . $notify  . " />
   <input type='hidden' name='last_msg' value='" . $last_msg  . "' />
   <input type='submit' name='preview' class='liteoption' value='".$lang['Preview']."' />&nbsp;
   <input type='submit' name='post' class='mainoption' value='".$lang["Submit"]."' />
   </form></span>";
}

$template->assign_vars(array(
   'QUICK_REPLY_FORM' => $quick_reply_form)
);
//
// END Quick Reply Mod
//

#
#-----[ OPEN ]------------------------------------------
#
lang_main.php

#
#-----[ FIND ]------------------------------------------
#
//
// That's all Folks!

#
#-----[ BEFORE, ADD ]------------------------------------
#
// Quick Reply Mod
$lang['Quick_Reply'] = 'Rychlá odpověď';
$lang['Quick_quote'] = 'Citovat poslední zprávu';

#
#-----[ OPEN ]------------------------------------------
#
viewtopic_body.tpl

#
#-----[ FIND ]------------------------------------------
#
{S_TOPIC_ADMIN}

#
#-----[ AFTER, ADD ]------------------------------------
#
{QUICK_REPLY_FORM}


#
#-----[ SAVE/CLOSE ALL FILES ]------------------------------------------
#
# EoM