Error when creating notification during the document loading phase in IE6/7

This is caused by the fact that the code that generates the notification container uses document.body.insert, which doesn't work in IE6/7 if document.body hasn't been manually extended with Prototype's methods, so it should be accessed with $(document.body). Normally it works since another script already uses $ to extend the body, but depending on the order that scripts receive the dom:loaded event, sometimes notifications can't be created during the dom:loaded phase.