Falscher Autorisierungscode! Greifst du auf diese Funktion auf die übliche Weise zu?

Code:
<!-- Continuation of div(class="upper") as opened in the header template -->

<span class="welcome">{$lang->welcome_guest} <a href="{$mybb->settings['bburl']}/member.php?action=login" onclick="$('#quick_login').modal({ fadeDuration: 250, keepelement: true }); return false;" class="login">{$lang->welcome_login}</a> <a href="{$mybb->settings['bburl']}/member.php?action=register" class="register">{$lang->welcome_register}</a></span>

</div>

</div>

<div class="modal" id="quick_login" style="display: none;">

<form method="post" action="{$mybb->settings['bburl']}/member.php">

<input name="action" type="hidden" value="do_login" />

<input name="url" type="hidden" value="" />

<input name="quick_login" type="hidden" value="1" />

<table width="100%" cellspacing="{$theme['borderwidth']}" cellpadding="{$theme['tablespace']}" border="0" class="tborder">

<tr>

<td class="thead" colspan="2"><strong>{$lang->login}</strong></td>

</tr>

<tr>

<td class="trow1" width="25%"><strong>{$login_username}</strong></td>

<td class="trow1"><input name="quick_username" id="quick_login_username" type="text" value="" class="textbox initial_focus" /></td>

</tr>

<tr>

<td class="trow2"><strong>{$lang->password}</strong></td>

<td class="trow2">

<input name="quick_password" id="quick_login_password" type="password" value="" class="textbox" /> <a href="{$mybb->settings['bburl']}/member.php?action=lostpw" class="lost_password">{$lang->lost_password}</a>

</td>

</tr>

<tr>

<td class="trow1">&nbsp;</td>

<td class="trow1 remember_me">

<input name="quick_remember" id="quick_login_remember" type="checkbox" value="yes" class="checkbox" checked="checked" />

<label for="quick_login_remember">{$lang->remember_me}</label>

</td>

</tr>

<tr>

<td class="trow2" colspan="2">

<div align="center"><input name="submit" type="submit" class="button" value="{$lang->login}" /></div>

</td>

</tr>

</table>

</form>

</div>

<script type="text/javascript">

$("#quick_login input[name='url']").val($(location).attr('href'));

</script>



<div class="flexcontainer smalltext">

   <div style="padding-right:30px"><br/>

       <img height="180" src="{$theme['imgdir']}/welcome.png" alt="" />

   </div>



   <div class="flexme" style="text-align:justify;">

       <h2>Willkommen</h2>

       

       Willkommen im <strong>Caldwell at night</strong>! <br />

       <br />

       Eine halbprivaten Black Dagger RPG. Du wolltest schon immer die Welt der Nacht erkunden und am Kampf zwischen Lessern und Vampiren teilnehmen? Dann bist du genau richtig bei uns.

       <br /> 

       <br />     

   </div>



   



   </div>

</div>