OK… I´ve found a solution.
You should do the following:
change in <blockquote>templates/ja_avian_ii_l/html/mod_login/</blockquote> the following line (should be line 49):
<blockquote><form action=”<?php echo sefRelToAbs( ‘index.php’ ); ?>” method=”post” name=”login” id=”form-login” ></blockquote>
in:
<blockquote><form action=”<?php echo JRoute::_( ‘index.php’, true, $params->get(‘usesecure’)); ?>” method=”post” name=”login” id=”form-login” ></blockquote>
The best of this change is, that you don´t need the JA Login Module anymore, because you now have only to place the standard module of Joomla to position “top” and it will be shown horizontal.
I hope, this will help you guys.
Cheers,
Hendrik