Visit http://nanjangudtemple.kar.nic.in/.
The website provides details of festivals, sevas and facilities available at Nanjundeshwara Temple. The Gallery has many photographs of temple and dodda jaathre festival.
The official website of Nanjangud Temple also mentions an address of another Govt. of Karnataka website where the online booking of the facilities available at various temples can be done. But the website is not yet functioning. ( karnatakatempleyatra.kar.nic.in ). Once it starts functioning, devotees can do online booking of various facilities/sevas.

Snapshot of the website as on 23-Jan-2014:
The list of Muzrai Temples in Karnataka is available in the e-Governance Portal (website) of Regional Commissioner, Mysore ( http://rcmysore-portal.kar.nic.in/ ) in Muzrai Temples page ( http://rcmysore-portal.kar.nic.in/MuzraiTemples.html )