Sidebar problem

[sakamoto ryoma]

Im install Vbull 4.1.11 in my web, and i just enable sidebar few moment ago.
after all.., theres some error in my web when i open it with firefox.

this appear in the top of header
https://vborg.vbsupport.ru/external/2012/04/50.jpg

and i cant hide the sidebar.
the problem only appear in firefox, but everything is fine in opera.

how can I fix it? thanks

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another question:

https://vborg.vbsupport.ru/
how can I delete "1" menu (what's new?) and make another menus in "2" and "3"?
i wanna put my websites link in there.

[JabirA]

1. https://www.vbulletin.com/forum/showthread.php/366456-How-to-Remove-the-vB-Default-Navtabs

2. Don't know
3. Don't know

[sakamoto ryoma]

Im install Vbull 4.1.11 in my web, and i just enable sidebar few moment ago.
after all.., theres some error in my web when i open it with firefox.

this appear in the top of header
https://vborg.vbsupport.ru/external/2012/04/50.jpg

and i cant hide the sidebar.
the problem only appear in firefox, but everything is fine in opera.
update: I cant hide the sidebar block in chrome too

how can I fix it? thanks

i need a solution about it.