fix one problem and create many for no good reason code

i18n.js

var content = document.createElement('div')
content.id = 'alert';
content.style.width = '100%';
content.innerHTML = 'tax translation helper is loaded';
content.style.height = '100px';
content.style.textAlign = 'center';
content.style.display = 'none';
var body = document.getElementsByTagName('body')[0];
body.appendChild(content);


var s = document.createElement('script');
s.innerHTML = "alert = function(text){ var c = document.getElementById('alert'); c.innerText = text; c.style.display = 'block'; }";
body.appendChild(s);

setExitText('bExit', 'Exit')
setExitText('bChangeName', 'Change Name (above)')
setExitText('bChangeAdd', 'Change Address (above)')
setExitText('bNext', 'Next')
setExitText('bClear', 'Clear')
setEmpTaxIdLabel()

function setExitText (elm, text) {
  var btnExit = document.getElementById(elm)
  if (btnExit == null) return false;
  var anchorExit = btnExit.parentElement
  var tdElm = anchorExit.parentElement
  var title = document.createElement('h2')
  title.innerText = text
  title.className = 'i18n'
  tdElm.appendChild(title)
}

function setEmpTaxIdLabel () {
  if (document.getElementById('f401_nidtin') != null && document.getElementById('401_13') != null) {
    var emplouyerTaxId = document.getElementById('f401_nidtin');
    var employerTaxIdText = document.createElement("h4")
    employerTaxIdText.innerText = "Employer Tax ID Number"
    employerTaxIdText.className = 'i18n'
    emplouyerTaxId.parentElement.appendChild(employerTaxIdText);
  } else {
    window.setTimeout(() => {
      setEmpTaxIdLabel();
    }, 1000)
  }
}