text: var video_player = document.getElementById("video_player");
  video = video_player.getElementsByTagName("video")[0],
  video_links = video_player.getElementsByTagName("figcaption")[0],
  source = video.getElementsByTagName("source"),
  link_list = [],
  vidDir = "http://demosthenes.info/assets/videos/",
  currentVid = 0,
  allLnks = video_links.children,
  lnkNum = allLnks.length;
  video.removeAttribute("controls");
  video.removeAttribute("poster");
  
  (function() {
  function playVid(index) {
   video_links.children[index].classList.add("currentvid");
      source[1].src = vidDir + link_list[index] + ".webm";  
  	source[0].src = vidDir + link_list[index] + ".mp4";
      currentVid = index;
      video.load();
  	video.play();
  }
  
  for (var i=0; i<lnkNum; i++) {
  var filename = allLnks[i].href;
  link_list[i] = filename.match(/([^\/]+)(?=\.\w+$)/)[0];
  (function(index){
          allLnks[i].onclick = function(i){
          i.preventDefault();  
  		for (var i=0; i<lnkNum; i++) {
  		allLnks[i].classList.remove("currentvid");
  		}
  		playVid(index);
          }    
      })(i);
  }
  video.addEventListener('ended', function () {
      allLnks[currentVid].classList.remove("currentvid");
      if ((currentVid + 1) >= lnkNum) { nextVid = 0 } else { nextVid = currentVid+1 }
      playVid(nextVid);
  })
  
  video.addEventListener('mouseenter', function() {
      video.setAttribute("controls","true");
  })
  
  video.addEventListener('mouseleave', function() {
      video.removeAttribute("controls");
  })
  
  var indexOf = function(needle) {
      if(typeof Array.prototype.indexOf === 'function') {
          indexOf = Array.prototype.indexOf;
      } else {
          indexOf = function(needle) {
              var i = -1, index = -1;
  			for(i = 0; i < this.length; i++) {
                  if(this[i] === needle) {
                      index = i;
                      break;
                  }}
              return index;
          };}
      return indexOf.call(this, needle);
  };
   	var focusedLink = document.activeElement;
   	index = indexOf.call(allLnks, focusedLink);
   	
  document.addEventListener('keydown', function(e) {
  if (index) {
  	var focusedElement = document.activeElement;
      if (e.keyCode == 40 || e.keyCode == 39) { // down or right cursor
      var nextNode = focusedElement.nextElementSibling;
      if (nextNode) { nextNode.focus(); } else { video_links.firstElementChild.focus(); }
      }
     if (e.keyCode == 38 || e.keyCode == 37) { // up or left cursor
      var previousNode = focusedElement.previousElementSibling;
      if (previousNode) { previousNode.focus(); } else { video_links.lastElementChild.focus(); }
      }
   }
  });
  
  })();