Firefox will allow you to use jQuery to assign a value to the <title> of a page. IE will not. It gives you an error deep in jQuery:
User Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)
Timestamp: Fri, 26 Feb 2010 17:08:14 UTC
Message: Unexpected call to method or property access.
Line: 260
Char: 5
Code: 0
Fortunately, document.title='Cool New Title'; works on both and with javascsriptMVC.
FYI