Javascriptprobleme nach Upgrade

Code:
<link rel="alternate" type="application/rss+xml" title="{$lang->latest_threads} (RSS 2.0)" href="{$mybb->settings['bburl']}/syndication.php" />



<link rel="alternate" type="application/atom+xml" title="{$lang->latest_threads} (Atom 1.0)" href="{$mybb->settings['bburl']}/syndication.php?type=atom1.0" />

<meta http-equiv="Content-Type" content="text/html; charset={$charset}" />

<meta http-equiv="Content-Script-Type" content="text/javascript" />

<meta http-equiv="expires" content="432000"> 

<script type="text/javascript" src="{$mybb->asset_url}/jscripts/jquery.js?ver=1804"></script>

<script type="text/javascript" src="{$mybb->asset_url}/jscripts/jquery.plugins.min.js?ver=1804"></script>

<script type="text/javascript" src="{$mybb->asset_url}/jscripts/general.js?ver=1804"></script>

<script type="text/javascript" src="{$mybb->settings['bburl']}/jscripts/prototype.js?ver=1603"></script>

<script type="text/javascript" src="{$mybb->settings['bburl']}/jscripts/scriptaculous.js"></script>

<script type="text/javascript" src="{$mybb->settings['bburl']}/jscripts/effects.js"></script>

<script type="text/javascript" src="{$mybb->settings['bburl']}/jscripts/general.js?ver=1603"></script>

<script type="text/javascript" src="{$mybb->settings['bburl']}/jscripts/popup_menu.js?ver=1800"></script>

<link rel="stylesheet" type="text/css" href="highslide/highslide.css">

<script type="text/javascript" src="highslide/highslide-with-gallery.js"></script>

<script type="text/javascript" src="highslide/highslide-gt.js"></script>

<script type="text/javascript" src="jscripts/shoutbox_jquery.js?ver=121"></script>

{$stylesheets}

<script type="text/javascript">

lang.unknown_error = "{$lang->unknown_error}";



lang.select2_match = "{$lang->select2_match}";

lang.select2_matches = "{$lang->select2_matches}";

lang.select2_nomatches = "{$lang->select2_nomatches}";

lang.select2_inputtooshort_single = "{$lang->select2_inputtooshort_single}";

lang.select2_inputtooshort_plural = "{$lang->select2_inputtooshort_plural}";

lang.select2_inputtoolong_single = "{$lang->select2_inputtoolong_single}";

lang.select2_inputtoolong_plural = "{$lang->select2_inputtoolong_plural}";

lang.select2_selectiontoobig_single = "{$lang->select2_selectiontoobig_single}";

lang.select2_selectiontoobig_plural = "{$lang->select2_selectiontoobig_plural}";

lang.select2_loadmore = "{$lang->select2_loadmore}";

lang.select2_searching = "{$lang->select2_searching}";



var cookieDomain = "{$mybb->settings['cookiedomain']}";

var cookiePath = "{$mybb->settings['cookiepath']}";

var cookiePrefix = "{$mybb->settings['cookieprefix']}";

var deleteevent_confirm = "{$lang->deleteevent_confirm}";

var removeattach_confirm = "{$lang->removeattach_confirm}";

var loading_text = '{$lang->ajax_loading}';

var saving_changes = '{$lang->saving_changes}';

var use_xmlhttprequest = "{$mybb->settings['use_xmlhttprequest']}";

var my_post_key = "{$mybb->post_code}";

var rootpath = "{$mybb->settings['bburl']}";

var imagepath = "{$theme['imgdir']}";

  var yes_confirm = "{$lang->yes}";

var no_confirm = "{$lang->no}";

var MyBBEditor = null;

var spinner_image = "{$theme['imgdir']}/spinner.gif";

var spinner = "<img src='" + spinner_image +"' alt='' />";

var modal_zindex = 9999;

</script>



{$newpmmsg}







<meta name="Description" content="Großes Kartforum rund ums Rennkart fahren-  Tipps, Setup, Kartbörse, Motoren, Tuning, Abstimmung, gebrauchte Karts Spiele">

<meta name="KeyWords" content="Kart, Go-Kart, Rennkart, Kartforum, Forum, Strecken, Rennserien, Kartfahren, gebrauchte Karts, Tipps">

<script type="text/javascript">

function getElementsByClass(searchClass,node,tag) {

var classElements = new Array();

if ( node == null ) node = document;

if ( tag == null ) tag = '*';

var els = node.getElementsByTagName(tag);

var elsLen = els.length;

var pattern = new RegExp("(^|\\s)"+searchClass+"(\\s|$)");

var j = 0;

for (var i = 0, j = 0; i < elsLen; i++) {

if ( pattern.test(els[i].className) ) {

classElements[j] = els[i]; j++;

}

}

return classElements;

}

function spoiler(obj) {

var st = obj.getElementsByTagName('span')[0].style;

st.display = (st.display == 'none' || st.display == '') ? 'block' : 'none';

}

</script>







<script type="text/javascript">

 var _gaq = _gaq || [];

 _gaq.push(['_setAccount', 'UA-881119-3']);

 _gaq.push(['_trackPageview']);



 (function() {

   var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;

ga.src = ('https:' == document.location.protocol ? 'https://' : 'http://') + 'stats.g.doubleclick.net/dc.js';

   var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);

 })();

</script>

<meta name="google-translate-customization" content="9b300e2584983aa1-80f46335aa950c79-g1da1456d79f51429-16"></meta>