bank nifty question

I found two conflicting index weights for the bank nifty 1) http://ournifty.com/bank-nifty-stocks-weight.html 2) http://www.moneycontrol.com/stocks/marketstats/indexcomp.php?optex=NSE&opttopic=indexcomp&sort=weight&order=&index=23 Which one is correct, also how does the index get...