var ncnpTimer;
function doNcnp() {
  clearTimeout(ncnpTimer);
  var ncnpObj = document.getElementById('ncnp');
  if (ncnpNummer == ncnpTekst.length - 1) {
    ncnpNummer = 0;
  } else {
    ncnpNummer++;
  }
  ncnpObj.innerHTML = ncnpTekst[ncnpNummer];
  ncnpTimer = setTimeout(doNcnp, 4000);
}