Fixed positioning of Zurb Foundation 4 dropdowns in IE8. ZF4 expects you to serve IE8 with mobile stylesheet but if you use respond.js or ZF4 grid polyfill (https://gist.github.com/zurbchris/5068210) you want it to behave differently. Usage: insert after foundation.js and foundation.dropdown.js

foundation.dropdown.extended.js

/*jslint unparam: true, browser: true, indent: 2 */

;(function ($, window, document, undefined) {
  'use strict';

  Foundation.libs.dropdown.small = function () {
    return $(window).width() < 768;
  };
}(Foundation.zj, this, this.document));