As promised, here is the new fixed version of my bookmarklet:

Netflix Autoplay Bookmarklet
Please note I can no longer tell when the episode is almost over, so I am now just timing the entire length of play. You will now see a countdown telling you when it will change to the next episode. This means a few things:
* If you pause the show, or it takes a long time to buffer, or is has to buffer in the middle, the timer will be off and it will switch early. There are some things you can do about this, first, you will see ‘||’ next to the timer, clicking it will pause the countdown, clicking again will unpause it, so if you walk away, be sure to click this. Also, you can click the countdown and type a new time into it, you can either give a number of seconds, or enter time in the mm:ss format.

Also, next to the pause button you will see a ‘-‘ most of you can ignore this, but if you have a lot of problems with buffering taking a really long time or something, you can also click the ‘-‘ and enter a number of seconds there. This will be added to what the bookmarklet thinks is the length of each episode to allow for buffering and such. By default 10 seconds is added to allow the episodes to load properly.

I have not done extensive testing on this, so there could very will be some bugs. If you find any, let me know.

(function(undefined){

//Takes our countdown timer and converts it to mm:ss and displays to user
function updateTime() {
var seconds = (countdownTimer % 60) + '';
if(seconds.length === 0)
seconds = '00';
else if(seconds.length === 1)
seconds = '0' + seconds;

timerNode.innerHTML = Math.floor(countdownTimer / 60) + ':' + seconds;
}

//Grabs the data for the episode matching the ID passed in
function getCurrentEpisodeData(episodeId) {
var episode, i = 0, j = 0;

if(episodeData && episodeData.video && episodeData.video.seasons) {
for(i=0; i<episodeData.video.seasons.length; i++) { for(j=0; j<episodeData.video.seasons[i].episodes.length; j++) { if(episodeData.video.seasons[i].episodes[j].id === episodeId) { episode = episodeData.video.seasons[i].episodes[j]; break; } } if(episode) break; } } return episode; } //Grabs the data for the episode following the one with the ID passed in function getNextEpisodeData(episodeId) { var episode, i = 0, j = 0, found = false; if(episodeData && episodeData.video && episodeData.video.seasons) { for(i=0; i<episodeData.video.seasons.length; i++) { for(j=0; j<episodeData.video.seasons[i].episodes.length; j++) { if(episodeData.video.seasons[i].episodes[j].id === episodeId) { found = true; } else if(found) { episode = episodeData.video.seasons[i].episodes[j]; break; } } if(episode) break; } } return episode; } //base64 decoder function decode64(input) { var keyStr = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=', output = '', chr1, chr2, chr3 = '', enc1, enc2, enc3, enc4 = '', i = 0, base64test = /[^A-Za-z0-9\+\/\=]/g; input = input.replace(base64test, ''); do { enc1 = keyStr.indexOf(input.charAt(i++)); enc2 = keyStr.indexOf(input.charAt(i++)); enc3 = keyStr.indexOf(input.charAt(i++)); enc4 = keyStr.indexOf(input.charAt(i++)); chr1 = (enc1 << 2) | (enc2 >> 4);
chr2 = ((enc2 & 15) << 4) | (enc3 >> 2);
chr3 = ((enc3 & 3) << 6) | enc4; output = output + String.fromCharCode(chr1); if (enc3 != 64) { output = output + String.fromCharCode(chr2); } if (enc4 != 64) { output = output + String.fromCharCode(chr3); } chr1 = chr2 = chr3 = ''; enc1 = enc2 = enc3 = enc4 = ''; } while (i<input.length); return unescape(output); } if(window.NetflixAutoplayLoaded) { alert('Autoplay already loaded.'); //return false; } else { window.NetflixAutoplayLoaded = true; } //resize the player so we can see the text we are about to insert under it document.getElementById('SLPlayer').style.height = (window.innerHeight - 35) + 'px'; document.getElementById('SLPlayerWrapper').style.height = (window.innerHeight - 35) + 'px'; document.getElementById('page-content').style.height = (window.innerHeight - 35) + 'px'; //create the text and other shizzy we want var autoplayElement = document.body.appendChild(document.createElement('div')); autoplayElement.id = 'NetflixAutoplayContainer'; autoplayElement.innerHTML = '




Time left until switch: 00:00 || -


';
var timerNode = document.getElementById('NetflixAutoplayTimer');
var autoplayText = document.getElementById('NetflixAutoplay');
var pauseButton = document.getElementById('NetflixAutoPauser');
var delay = document.getElementById('NetflixAutoDelay');

//the number of seconds to wait for the show to buffer on load
var timerDelay = 10;

//Pull the current episode information and the full series data for us
var episodeData = JSON.parse(decode64(netflix.Silverlight.MoviePlayer.getPlugin().settings.metadata));
var currentEppId = (/,EpisodeMovieId=\d*/.exec(netflix.Silverlight.MoviePlayer.getPlugin().settings.initParams)[0]).split('=')[1];

//gets data for current & next epps
var currentEpp = getCurrentEpisodeData(currentEppId);
var nextEpp = getNextEpisodeData(currentEpp.id);

var paused = false; //bool to see if paused
var done = false; //bool to see if finished autoplay
var editingTime = false; //bool to check if user is editing time

//Javascript to execute to change episode
var ini = document.getElementsByTagName('script');
ini = ini[ini.length-1].innerHTML;

//Set the countdown till next episode + the pause we need for buffer
function updateCountdown() {
countdownTimer = parseInt(currentEpp.runtime, 10) + timerDelay;
}

var countdownTimer = 0; //episode length timer
updateCountdown(); //Sets the count down timer for current episode

//Prompt user for number of episodes
var numToWatch = 3;
function getNumberOfEpisodesToWatch() {
var newNum;
do {
newNum = prompt('How many episodes would you like to play?', numToWatch);
} while (isNaN(newNum));

numToWatch = parseInt(newNum, 10);

//set the text
if(numToWatch > 0) {
autoplayText.innerHTML = 'Netflix autoplay on, Episodes left: ' + numToWatch;

if(done) { //if we have already finished, restart
done = false;
switchEpps();
}
} else {
autoplayText.innerHTML = 'Netflix autoplay off';
}
}

//ask the user for the number of episodes they want
getNumberOfEpisodesToWatch();

//handler for pause button
function pause() {
if(pauseButton.innerHTML === '||') {
paused = true;
pauseButton.innerHTML = '>';
} else {
paused = false;
pauseButton.innerHTML = '||';
}
}

//handles editing the buffer delay
function delayEdit(e) {
if((!e.keyCode || e.keyCode === 13) && !isNaN(delay.innerHTML)) {
timerDelay = parseInt(delay.innerHTML, 10);

if (!e) var e = window.event;
e.cancelBubble = true;
if (e.stopPropagation) e.stopPropagation();
return false;
}
}

//handler for editing time left to play
function editTime(e) {
timerNode.contentEditable=true;
editingTime = true;

if (!e) var e = window.event;
e.cancelBubble = true;
if (e.stopPropagation) e.stopPropagation();
return false;
}

//handles updating time left to play after user edit
function endEdit(e) {
if(timerNode.contentEditable.toString() === 'true' && (e.type === 'blur' || e.keyCode === 13)) {
timerNode.contentEditable = false;
editingTime = false;

var time = timerNode.innerHTML;
if(time.indexOf(':') >0) { //converts minutes:seconds into time
time = time.split(':');
countdownTimer = parseInt(time[0], 10)*60 + parseInt(time[1], 10);
} else { //converts just seconds into time
if(!isNaN(time)) {
countdownTimer = parseInt(time, 10);
}
}

if (!e) var e = window.event;
e.cancelBubble = true;
if (e.stopPropagation) e.stopPropagation();
return false;
}
}

//Does everything to change to the next episode
function switchEpps() {
//setup the script for the next epp
ini = ini.replace(/,EpisodeMovieId=\d*/,',EpisodeMovieId=' + nextEpp.id);

//switch out data to the new epps
currentEpp = nextEpp;
nextEpp = getNextEpisodeData(currentEpp.id);

//Switch to next epp & update text
if(currentEpp) {
autoplayText.innerHTML = 'Netflix autoplay on, Episodes left: ' + numToWatch;
updateCountdown();
eval(ini);
nextEppTimer();
} else {
autoplayText.innerHTML = 'There does not seem to be a next episode.';
}
}

//Main loop, updates our timer and stuff, switches to next epp when necessary, yadayda
function nextEppTimer() {
setTimeout(function() {
if(isNaN(countdownTimer) || isNaN(numToWatch)) {
autoplayText.innerHTML = 'NUMBERS DO NOT WORK THAT WAY! GOOD NIGHT!';
nextEppTimer();
return;
}

if(countdownTimer <= 0) { if(numToWatch-- > 0) {
switchEpps();
} else {
done = true;
autoplayText.innerHTML = 'Netflix autoplay completed.';
numToWatch = 0;
}
} else {
if(!editingTime && !paused) {
countdownTimer--;
updateTime();
}
nextEppTimer();
}
}, 1000);
}

//attach the events we need
autoplayText.addEventListener('click', getNumberOfEpisodesToWatch, false);
pauseButton.addEventListener('click', pause, false);
timerNode.addEventListener('click', editTime, false);
timerNode.addEventListener('blur', endEdit, false);
timerNode.addEventListener('keypress', endEdit, false);
delay.addEventListener('blur', delayEdit, false);
delay.addEventListener('keyup', delayEdit, false);

//START EVERYTHING!
nextEppTimer();
})();