I don't know if this is the right forum, but I'm having problems when trying to indent topics in the main page, when I click on the arrow to move a topic to the right, it doesn't work and the browser gives this message:
Agente de usuario: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 5.1; Trident/4.0; .NET CLR 2.0.50727; .NET CLR 1.1.4322; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)
Fecha: Tue, 18 Jan 2011 19:07:44 UTC
Mensaje: 'classList' is null or not an object
The weird thing is that it was working before.