LotR site question

[elady25]

Hey, I know many HP fans are also fans of Tolkein.  As I have been 
studying Middle-Earth more, I wonder if there is any site about it 
that is akin to the Harry Potter Lexicon, with dates, times, people, 
etc. cross-referenced, indexed, and easy-to-use.  I have often wanted 
to check a fact and either not been able to remember where it was, or 
not have all the books with me to use inices and appendices (I only 
happen to own LotR and The Silmarilian, none of the tomes of the 
History of Middle Earth or lost tales or anything).  Can anyone help 
me out?

Thanks
imamommy