loadScripts.js

function loadScripts(scripts, allOK) {
  var head = document.getElementsByTagName('head').item(0);
  var i = 0;
  (function load() {
    var script = document.createElement('script');
    script.type = 'text/javascript';
    script.src = scripts[i];
    script.addEventListener('load', function () {
      (++i == scripts.length) ? AllOK() : load();
    }, false);
    head.appendChild(script);
  })();
}