I'm not sure I follow you. Do you mean the difference between an onchange_event being called from directly editing a field vs. editing a different field that called a different onchange_event modifying it? If that's the case, I don't have any great answers, mainly just arrange onchange_events in a hierarchy so you don't get stuck in an infinite loop of two fields updating each other.

Actually yes.. tats exactly the case.. i was able to stop it from going into the infinite loop... but not entirely achieved the purpose... i mean now am facing the decimal discrepancy.... working on it.. and anyways thanks for the help :)