gistfile1.js

var HAS_EXPANDING_BOX_BUG = (function(){
  var el = document.createElement('div'),
      isBuggy = false;
  el.style.width = '1px';
  el.innerHTML = 'xxxxxxxxxx';
  document.body.appendChild(el);
  isBuggy = (el.offsetWidth > 1);
  document.body.removeChild(el);
  el = null;
  return isBuggy;
})();