// JScript File
  function checkText(){
  if (document.getElementById('txtCheck').value.toLowerCase() !='j98yf'){
  alert('Characters provided do not match the image.');
  return false;
  }else{
  //disable txtCheck before submit:
  document.getElementById('txtCheck').disabled = true;
  return confirm('Are you finished entering data? Click OK to send the form or CANCEL to continue entering data.')
  }
  }