Tom0000 / Hide header

// ==UserScript==
// @name        Hide header
// @namespace   nl.tomvanleeuwen.npohack
// @description Hides the NPO header bar in full screen mode.
// @include     https://start-player.npo.nl/*
// @version     1
// @grant       none
// ==/UserScript==
function hideAll(items) {
  for (var item = 0; item < items.length; item++) {
    items[item].style.display = 'None';
  }
}
function hideCrap() {
  var hideList = [
    'npo-player-header',
    'npo-player-recommended',
    'npo-player-endscreen',
    'vjs-play-control'
  ];
  for (var hide = 0; hide < hideList.length; hide++) {
    var items = document.getElementsByClassName(hideList[hide]);
    hideAll(items);
  }
}
setInterval(hideCrap, 1000);