function escapeHtml(str) {
  var arrEntities = {
    'lt': '<',
    'gt': '>',
    'nbsp': ' ',
    'amp': '&',
    'quot': '"',
    'middot': '·',
    'amp': '&',
    'brvbar': '¦',
    'mdash': '—',
    'ndash': '–',
    'ge': '≥',
    'le': '≤',
    'laquo': '«',
    'raquo': '»',
    'deg': '°',
    'bull': '•',
    'macr': '¯',
    '#64': '@'
  };
  return str.replace(/&(lt|gt|nbsp|amp|quot|middot|amp|brvbar|mdash|ndash|ge|le|laquo|raquo|deg|bull|macr|#64);/ig, function (all, t) { return arrEntities[t]; }).replace('<section', '<div').replace('<img', '<img style="max-width:100%;height:auto" ');
}