You have corrected the forum url and the one error you have left is this
vBulletin_init();
thats the error and a
vb one. It can not find its java source. Every last one of your java files are relative path. See below
<script type="text/javascript">
<!--
var SESSIONURL = "";
var IMGDIR_MISC = "http://forums.pimprig.com/images/misc";
// -->
</script>
<script type="text/javascript" src="/clientscript/vbulletin_global.
js"></script>
<script type="text/javascript" src="/clientscript/statistic_java.
js"></script>
<script type="text/javascript" src="/clientscript/resizeall.
js"></script>
<script type="text/javascript" src="/clientscript/vbulletin_menu.
js"></script>
I cant say why yours are relative but anyway you can edit the
vb header include template and make sure they are all full url and you should be fine