var rate = new Array(0.6677184664,0.7330960079,1.0000000000);
        function currency_convert(origin) {
                var origin_value = eval('document.currency.c'+origin+'.value');
                var euro_equivalent = rate[origin];
                var v;
                for (i=0; i<rate.length; i++) {
                        if (i!=origin) {
                                v = Math.round(rate[i]*origin_value/euro_equivalent*100)/100;
                                eval('document.currency.c'+i+'.value = '+v);
                        }
                }
                return true;
        }