  var _getIntroContent = function(html) {
    var htmlContent = $(html),
      result = '';
    for (var i = 0; i < 10; i++) {
      if (!htmlContent[i]) {
        break;
      }
      if (!htmlContent[i].outerHTML) {
        continue;
      }

      result += htmlContent[i].outerHTML;
    }
    return result
  }