eateElement('div');
  div.setAttribute('style', 'position: absolute; top: 0, left:0; width:0, height:0, overflow: hidden; visibility: hidden;');
  div.innerHTML = popover.getAttribute('data-content');

  var has_math = div.querySelector("span.math");
  if (has_math) {
    document.body.appendChild(div);
    MathJax.Hub.Queue(["Typeset", MathJax.Hub, div]);
    MathJax.Hub.Queue(function() {
      popover.setAttribute('data-content', div.innerHTML);
      document.body.removeChild(div);
    })
  }
}
</script