Trello info-board view simplification with screensaver

// ==UserScript==
// @name         trello dasboard
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  try to take over the world!
// @author       You
// @match        https://trello.com/b/JsOrQ0aZ/infopannel
// @grant        none
// ==/UserScript==
var aHeaderList;
var aWrapperList;
var iCurrentFrame = 0;
var iCurrentFrameDirection = 1;
var oScreenSaverInterval = null;
var iScreenSaverIterations = 0;

var iScreenSaverStart = 50000;//10*60*1000;
(function() {
    'use strict';
//    aHeaderList[0].style.display = "none";
    // Your code here...
    setTimeout(function(){
        aHeaderList = document.getElementsByClassName("js-board-header");
        for (var i = 0; i < aHeaderList.length; i++) {
            aHeaderList[i].style.display = "none";
        }
        document.getElementById("header").style.display = "none";
        document.getElementById("board").style.paddingTop = "1px";

        aWrapperList = document.getElementsByClassName("js-list list-wrapper");
        for (i = 0; i < aWrapperList.length; i++) {
            aWrapperList[i].style.margin = "0 1px";
        }

        setTimeout(startScreenSaver,iScreenSaverStart);
    }, 2000)
})();

var startScreenSaver = function() {
    //document.getElementById("classic-body").style.display="none";
    oScreenSaverInterval = setInterval(screenSaverNextFrame, 50);
}

var screenSaverNextFrame = function() {
    iScreenSaverIterations++;
    if(iScreenSaverIterations > 100) {
        iScreenSaverIterations=0;
        clearInterval(oScreenSaverInterval);
        oScreenSaverInterval = null;
        document.getElementById("classic-body").style.display="block";
        setTimeout(startScreenSaver,iScreenSaverStart);
    }

    iCurrentFrame = iCurrentFrame + iCurrentFrameDirection;
    if(iCurrentFrame > 100) {
        iCurrentFrame = 100;
        iCurrentFrameDirection = -1;
    }
    if(iCurrentFrame < 0) {
        iCurrentFrame = 0;
        iCurrentFrameDirection = 1;
    }
   document.body.style.filter = "invert("+iCurrentFrame+"%)";

}