Javascript problems

[scarex80]

I apologize if this isn't the correct area where posting my problem.

I was debugging my forum in order to find out and fix bug in my code. Using javascript debugger for IE, I found in my forumhome (index.php) 4 javascript error: the same error are present in the forumhome of vbulletin.org (I make a comparison as I use vBulletin 3.6.8, as Vbulletin.org does).

Are available some solution to fix this error? It is a very annoying situation that IE allert my users of some javascript errors in forum pages...

These are the errors reported by debugger.

vbulletin_global.js?v=368

if (!window.console || !console.firebug)
{
	window.console = {};
	var names = ["log", "debug", "info", "warn", "error", "assert", "dir", "dirxml", "group", "groupEnd", "time", "timeEnd", "count", "trace", "profile", "profileEnd"];
	for (var i = 0; i < names.length; ++i) window.console[names[i]] = function() {};

No explanation

vbulletin_menu.js?v=368

vBulletin.add_event("vBmenuShow");

vBulletin is null or not an object



Home page forum

<script type="text/javascript" src="clientscript/vbulletin_read_marker.js?v=368"></script>
<script type="text/javascript">
<!--
vbphrase['doubleclick_forum_markread'] = "Double-click this icon to mark this forum and its contents as read";
init_forum_readmarker_system();
-->
</script>

vbphrase is null or not an object



vbulletin_global.js?v=368 (line 1826)

	// the new init system
	vBulletin.init();

vBulletin is null or not an object