// skript na eurokalkulačku
  var kurz = 30.1260;
  var maxCelychCisel = 10;
  var maxDesatinnychCiselSkk = 2;
  var maxDesatinnychCiselEur = 4;

  function ibaCisla(text, max) {
  var cnt = text.length;
  var ret = '';
  var nemamBodku = true;
  var predBodkou = 0;
  var zaBodkou = 0;
  for (i=0;i<cnt;i++) {
  var znak = text.substring(i,i+1);
  if (znak == ',') {znak = '.';}
  if (znak >= '0' && znak <= '9') {
  // max. celych cisel
  if (nemamBodku) {
  if (predBodkou<maxCelychCisel) {
  ret = ret + znak;
  predBodkou++;
  }
  // max. desatinnych sicel;
  } else {
  if (zaBodkou<max) {
  ret = ret + znak;
  zaBodkou++;
  }
  }
  }
  if (znak == '.' && nemamBodku) {
  nemamBodku = false;
  ret = ret + znak;
  }
  }
  if (ret=='.') {ret = '';}
  return ret;
  }
 
  function writeCurr(skk, eur, event) {
  // filter specialnych klaves
  if ((event.keyCode>34 && event.keyCode<41)) {return;}
  if (skk == null) {
  eur = ibaCisla(eur,maxDesatinnychCiselEur);
  skk = (eur*kurz).toFixed(2)*1;
  if (skk == 0) {skk = '';}
  } else {
  skk = ibaCisla(skk,maxDesatinnychCiselSkk);
  eur = (skk/kurz).toFixed(maxDesatinnychCiselEur)*1;
  if (eur == 0) {eur = '';}
  }
  if (document.getElementById('inputSkk').value!=skk) {document.getElementById('inputSkk').value = skk;}
  if (document.getElementById('inputEur').value!=eur) {document.getElementById('inputEur').value = eur;}
  }