<script type="text/javascript">
(function() {  
  var textHolder = document.getElementsByClassName('big-text-neon')[0],
    text = textHolder.innerHTML,
   chars = text.length,
   newText = '',
   i;  

  for (i = 0; i < chars; i += 1) {
   newText += '<em>' + text.charAt(i) + '</em>';
  }

  textHolder.innerHTML = newText;

  var letters = document.getElementsByTagName('em'),
   flickers = [5, 7, 9, 11, 13, 15, 17],
   randomLetter,
   flickerNumber,
   counter;

  function randomFromInterval(from,to) {
   return Math.floor(Math.random()*(to-from+1)+from);
  }

  function hasClass(element, cls) {
   return (' ' + element.className + ' ').indexOf(' ' + cls + ' ') > -1;
  }

  function flicker() {   
   counter += 1;
    
   if (counter === flickerNumber) {
    return;
   }

   setTimeout(function () {
    if(hasClass(randomLetter, 'off')) {
     randomLetter.className = '';
    }
    else {
     randomLetter.className = 'off';
    }

    flicker();
   }, 30);
  }

  (function loop() {
   var rand = randomFromInterval(300,1200);

   randomLetter = randomFromInterval(0, 6);
   randomLetter = letters[randomLetter];
    
   flickerNumber = randomFromInterval(0, 3);
   flickerNumber = flickers[flickerNumber];

   setTimeout(function() {
     counter = 0;
     flicker();
     loop();   
   }, rand);
  }());
})(jQuery);
</script>