//used to convert chinese yuan to euro and us dollars
var rate = new Array(1, 0.147, 0.101);
function currency_convert(origin) {
	var origin_value = eval('document.currency.c'+origin+'.value');
	var cny_equivalent = rate[origin];
	var v;
	for (i=0; i<rate.length; i++) {
		if (i!=origin) {
			v = Math.round(rate[i]*origin_value/cny_equivalent*100)/100;
			eval('document.currency.c'+i+'.value = '+v);
		}
	}
	return true;
}