Dear David and Michael,
Interesting discussion. I can only suggest you to look at this cultural anthropologist who had spent much time in studying 'cultural belief' in Thailand and Indonesia -- especially 'Javanese Belief'. He is dutch born anthropologist Niels Mulder. (His books: "Mysticism & Everyday Life in Contemporary Java: Cultural Persistence and Change" -- Singapore University Press, 1978 and also his interesting work, "Mysticism in Java: Ideology in Indonesia" -- Pepin Press, Amsterdam).
http://en.wikipedia.org/wiki/Javanese_beliefs
Then you may see the trace of Javanese past -- the trace of "javanese mysticism" in (Indonesia) contemporary life. Mysticism is still seen until today in Indonesian life, although they have adopted Islamism for their formal belief..
A daily ritual in Java until now, as "Slametan" for instance, is still practiced among the javanese moslem until today. Pls see this
http://www.songofsnow.com/Mysticism-...-p/mysjava.htm
Niels Mulder had spent a couple of years in studying this Javanese belief
GANJAWULUNG