var looper;
var images = ["bavota.png", "nystrom.png", "langhhhhhhhhheeeeinrichhhhhh.png"];
var quotes = [
  "ummmm...",
  "you know...",
  "funky quiz",
  "funky feedback",
  "funky gates",
  "close your laptops",
  "hands on",
  "frugal maps",
  "null is the devil",
  "haskell is better",
  "for some definitions of fun",
  "accumulators > loops",
  "bogosort > bubblesort",
  "logisim",
  "mic-1",
  "maxima",
  "proof by contradiction",
  "proof by induction",
  "exactly what we need to show",
  "but we need to prove it",
  "what did we do last week?",
  "someone else?",
  "Bin, is the hands-on online?",
  "Guys please",
  "check-expect or die",
  "Trees!",
  "without loss of generality",
  "1 > 0",
  "what is a for loop?",
  "donald trump",
  "zero one one one zero zero zero one zero one",
  "Now we'll show proof that 1 > 0",
  "[TELL ME]",
  "Supercomplilation"
];

document.addEventListener("DOMContentLoaded", setup);

function setup() {
  changeImages();
  window.setInterval(changeImages, 15 * (360 / 5));
  changeQuotes(250, 10);
  document.getElementById("img1").removeAttribute("style");
  document.getElementById("img2").removeAttribute("style");
  document.getElementById("img3").removeAttribute("style");
}

var imageOffset = 0;
function changeImages() {
  for (var i = 1; i < 4; i++)
    document.getElementById("img" + i).src = images[(i+imageOffset) % 3];
  imageOffset++;
}

var quote = 0;
function changeQuotes(time, offset) {
  quote += 1 + Math.floor(Math.random() * (quotes.length - 2));
  quote = quote % quotes.length;
  document.getElementById("quote").innerHTML =
    quotes[quote];
  window.setTimeout(function() {
    changeQuotes(time, offset);
  }, offset + time * Math.sqrt(quotes[quote].length));
}