IT seems as if Bank Indonesia (BI) has tried just about everything, but despite all its efforts the value of the rupiah still continues to fall, unchecked. As well as tightening supervision of banks involved in dollar transactions, BI has also tried market intervention. And don't ask just how many dollars BI has bought up in order to prop up the rupiah. BI Governor Syahril Sabirin is keeping his lips sealed, but it is estimated the foreign exchang...