var rate = new Array(
1.000000,      //HRK       0
0.136742,      //EUR index 1
0.228274,      //CHF index 2
0.200924);     //USD index 3


function valuta_pretvori(origin) {
var valuta = eval('document.valuta.c'+origin+'.value');
var kn = rate[origin];
var v;
for (i=0; i<rate.length; i++) {
if (i!=origin) {
v = Math.round(rate[i]*valuta/kn*100)/100;
eval('document.valuta.c'+i+'.value = '+v);
}
}
return true;
}