diff --git a/builds/appchan-x.user.js b/builds/appchan-x.user.js
index 1bb01d7a2..7d494f7dc 100644
--- a/builds/appchan-x.user.js
+++ b/builds/appchan-x.user.js
@@ -115,7 +115,7 @@
 'use strict';
 
 (function() {
-  var $, $$, Anonymize, ArchiveLink, Banner, Board, Build, Callbacks, CatalogLinks, CatalogThread, Clone, Color, Conf, Config, CrossOrigin, CustomCSS, DataBoard, DeleteLink, Dice, DownloadLink, E, ExpandComment, ExpandThread, FappeTyme, Favicon, FileInfo, Filter, Flash, Fourchan, Gallery, Get, GlobalMessage, Header, IDColor, ImageExpand, ImageHover, ImageLoader, Index, JSColor, Keybinds, Labels, Linkify, Main, MarkNewIPs, MascotTools, Mascots, Menu, Nav, Navigate, Notice, PSAHiding, Polyfill, Post, PostHiding, QR, QuoteBacklink, QuoteInline, QuoteMarkers, QuotePreview, QuoteStrikeThrough, QuoteThreading, Quotify, RandomAccessList, Recursive, Redirect, RelativeDates, RemoveSpoilers, Report, ReportLink, RevealSpoilers, Rice, Sauce, Settings, SimpleDict, Style, ThemeTools, Themes, Thread, ThreadExcerpt, ThreadStats, ThreadUpdater, ThreadWatcher, Time, TrashQueue, UI, Unread, Video, c, d, doc, editMascot, editTheme, g, userNavigation,
+  var $, $$, Anonymize, ArchiveLink, Banner, Board, Build, Callbacks, CatalogLinks, CatalogThread, Clone, Color, Conf, Config, CrossOrigin, CustomCSS, DataBoard, DeleteLink, Dice, DownloadLink, E, ExpandComment, ExpandThread, FappeTyme, Favicon, FileInfo, Filter, Flash, Fourchan, Gallery, Get, GlobalMessage, Header, IDColor, ImageCommon, ImageExpand, ImageHover, ImageLoader, Index, JSColor, Keybinds, Labels, Linkify, Main, MarkNewIPs, MascotTools, Mascots, Menu, Nav, Navigate, Notice, PSAHiding, Polyfill, Post, PostHiding, QR, QuoteBacklink, QuoteInline, QuoteMarkers, QuotePreview, QuoteStrikeThrough, QuoteThreading, Quotify, RandomAccessList, Recursive, Redirect, RelativeDates, RemoveSpoilers, Report, ReportLink, RevealSpoilers, Rice, Sauce, Settings, SimpleDict, Style, ThemeTools, Themes, Thread, ThreadExcerpt, ThreadStats, ThreadUpdater, ThreadWatcher, Time, TrashQueue, UI, Unread, Video, c, d, doc, editMascot, editTheme, g, userNavigation,
     __slice = [].slice,
     __indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; },
     __hasProp = {}.hasOwnProperty,
@@ -10337,8 +10337,8 @@
 
   Gallery = {
     init: function() {
-      var el;
-      if (g.BOARD === 'f' || !Conf['Gallery']) {
+      var el, _ref;
+      if (!(((_ref = g.VIEW) === 'index' || _ref === 'thread') && Conf['Gallery']) || g.BOARD === 'f') {
         return;
       }
       el = $.el('a', {
@@ -10360,7 +10360,7 @@
         return;
       }
       if (Gallery.nodes) {
-        Gallery.generateThumb($('.file', this.nodes.root));
+        Gallery.generateThumb(this);
         Gallery.nodes.total.textContent = Gallery.images.length;
       }
       if (!Conf['Image Expansion']) {
@@ -10368,14 +10368,30 @@
       }
     },
     build: function(image) {
-      var cb, createSubEntry, dialog, el, file, i, key, menuButton, name, nodes, value, _i, _len, _ref, _ref1;
+      var candidate, cb, dialog, entry, file, key, menuButton, nodes, post, thumb, value, _i, _j, _len, _len1, _ref, _ref1, _ref2;
+      if (Conf['Fullscreen Gallery']) {
+        $.one(d, 'fullscreenchange mozfullscreenchange webkitfullscreenchange', function() {
+          return $.on(d, 'fullscreenchange mozfullscreenchange webkitfullscreenchange', cb.close);
+        });
+        if (typeof doc.mozRequestFullScreen === "function") {
+          doc.mozRequestFullScreen();
+        }
+        if (typeof doc.webkitRequestFullScreen === "function") {
+          doc.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT);
+        }
+      }
       Gallery.images = [];
       nodes = Gallery.nodes = {};
+      Gallery.fullIDs = {};
+      Gallery.slideshow = false;
       nodes.el = dialog = $.el('div', {
-        id: 'a-gallery',
-        innerHTML: "<div class=gal-viewport>\n  <span class=gal-buttons>\n    <a class=\"menu-button\" href=\"javascript:;\"><i></i></a>\n    <a href=javascript:; class=gal-close>×</a>\n  </span>\n  <a class=gal-name target=\"_blank\"></a>\n  <span class=gal-count>\n    <span class='count'></span> / <span class='total'></span>\n  </span>\n  <div class=gal-prev></div>\n  <div class=gal-image>\n    <a href=javascript:;><img></a>\n  </div>\n  <div class=gal-next></div>\n</div>\n<div class=gal-thumbnails></div>"
+        id: 'a-gallery'
+      });
+      $.extend(dialog, {
+        innerHTML: "<div class=\"gal-viewport\">\r<span class=\"gal-buttons\">\r<a href=\"javascript:;\" class=\"gal-start\" title=\"Start slideshow (S to toggle)\"><i></i></a>\r<a href=\"javascript:;\" class=\"gal-stop\" title=\"Stop slideshow (S to toggle)\"><i></i></a>\r<a href=\"javascript:;\" class=\"menu-button\"><i></i></a>\r<a href=\"javascript:;\" class=\"gal-close\">×</a>\r</span>\r<a class=\"gal-name\" target=\"_blank\"></a>\r<span class=\"gal-count\">\r<span class=\"count\"></span> / <span class=\"total\"></span>\r</span>\r<div class=\"gal-prev\"></div>\r<div class=\"gal-image\">\r<a href=\"javascript:;\"><img></a>\r</div>\r<div class=\"gal-next\"></div>\r</div>\r<div class=\"gal-thumbnails\"></div>"
       });
       _ref = {
+        buttons: '.gal-buttons',
         frame: '.gal-image',
         name: '.gal-name',
         count: '.count',
@@ -10389,58 +10405,71 @@
         nodes[key] = $(value, dialog);
       }
       menuButton = $('.menu-button', dialog);
-      nodes.menu = new UI.Menu();
+      nodes.menu = new UI.Menu('gallery');
       cb = Gallery.cb;
       $.on(nodes.frame, 'click', cb.blank);
-      $.on(nodes.next, 'click', cb.advance);
+      $.on(nodes.next, 'click', cb.click);
       $.on($('.gal-prev', dialog), 'click', cb.prev);
       $.on($('.gal-next', dialog), 'click', cb.next);
+      $.on($('.gal-start', dialog), 'click', cb.start);
+      $.on($('.gal-stop', dialog), 'click', cb.stop);
       $.on($('.gal-close', dialog), 'click', cb.close);
       $.on(menuButton, 'click', function(e) {
         return nodes.menu.toggle(e, this, g);
       });
-      createSubEntry = Gallery.menu.createSubEntry;
-      for (name in Config.gallery) {
-        el = createSubEntry(name).el;
-        nodes.menu.addEntry({
-          el: el,
-          order: 0
-        });
+      _ref1 = Gallery.menu.createSubEntries();
+      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
+        entry = _ref1[_i];
+        entry.order = 0;
+        nodes.menu.addEntry(entry);
       }
       $.on(d, 'keydown', cb.keybinds);
-      $.off(d, 'keydown', Keybinds.keydown);
-      _ref1 = $$('.post .file');
-      for (i = _i = 0, _len = _ref1.length; _i < _len; i = ++_i) {
-        file = _ref1[i];
-        if (!$('.fileDeletedRes, .fileDeleted', file)) {
-          Gallery.generateThumb(file);
+      if (Conf['Keybinds']) {
+        $.off(d, 'keydown', Keybinds.keydown);
+      }
+      _ref2 = $$('.post .file');
+      for (_j = 0, _len1 = _ref2.length; _j < _len1; _j++) {
+        file = _ref2[_j];
+        post = Get.postFromNode(file);
+        if (post.file.isDead) {
+          continue;
+        }
+        Gallery.generateThumb(post);
+        if (!image && Gallery.fullIDs[post.fullID]) {
+          candidate = post.file.thumb.parentNode;
+          if (Header.getTopOf(candidate) + candidate.getBoundingClientRect().height >= 0) {
+            image = candidate;
+          }
         }
       }
+      $.addClass(doc, 'gallery-open');
       $.add(d.body, dialog);
       nodes.thumbs.scrollTop = 0;
       nodes.current.parentElement.scrollTop = 0;
-      Gallery.cb.open.call(image ? $("[href*='" + image.pathname + "']", nodes.thumbs) : Gallery.images[0]);
-      d.body.style.overflow = 'hidden';
-      return nodes.total.textContent = i;
+      if (image) {
+        thumb = $("[href='" + image.href + "']", nodes.thumbs);
+      }
+      thumb || (thumb = Gallery.images[Gallery.images.length - 1]);
+      if (thumb) {
+        Gallery.open(thumb);
+      }
+      doc.style.overflow = 'hidden';
+      return nodes.total.textContent = Gallery.images.length;
     },
-    generateThumb: function(file) {
-      var post, thumb, thumbImg, title;
-      post = Get.postFromNode(file);
-      if (!(post.file && (post.file.isImage || post.file.isVideo || Conf['PDF in Gallery']))) {
+    generateThumb: function(post) {
+      var thumb, thumbImg, _ref, _ref1;
+      if (post.isClone || post.isHidden && !(((_ref = post.file) != null ? _ref.isImage : void 0) || ((_ref1 = post.file) != null ? _ref1.isVideo : void 0) || Conf['PDF in Gallery'])) {
         return;
       }
-      title = ($('.fileText a', file)).textContent;
+      Gallery.fullIDs[post.fullID] = true;
       thumb = $.el('a', {
         className: 'gal-thumb',
         href: post.file.URL,
         target: '_blank',
-        title: title
+        title: post.file.name
       });
       thumb.dataset.id = Gallery.images.length;
       thumb.dataset.post = post.fullID;
-      if (post.file.isVideo) {
-        thumb.dataset.isVideo = true;
-      }
       thumbImg = post.file.thumb.cloneNode(false);
       thumbImg.style.cssText = '';
       $.add(thumb, thumbImg);
@@ -10448,6 +10477,110 @@
       Gallery.images.push(thumb);
       return $.add(Gallery.nodes.thumbs, thumb);
     },
+    open: function(thumb) {
+      var el, elType, file, name, newID, nodes, oldID, post, slideshow, _base, _ref;
+      nodes = Gallery.nodes;
+      name = nodes.name;
+      oldID = +nodes.current.dataset.id;
+      newID = +thumb.dataset.id;
+      slideshow = Gallery.slideshow && (newID > oldID || (oldID === Gallery.images.length - 1 && newID === 0));
+      if (el = $('.gal-highlight', nodes.thumbs)) {
+        $.rmClass(el, 'gal-highlight');
+      }
+      $.addClass(thumb, 'gal-highlight');
+      elType = /\.webm$/.test(thumb.href) ? 'video' : /\.pdf$/.test(thumb.href) ? 'iframe' : 'image';
+      $[elType === 'iframe' ? 'addClass' : 'rmClass'](doc, 'gal-pdf');
+      file = $.el(elType, {
+        title: name.download = name.textContent = thumb.title
+      });
+      $.on(file, 'error', (function(_this) {
+        return function() {
+          return Gallery.error(file, thumb);
+        };
+      })(this));
+      file.src = name.href = thumb.href;
+      $.extend(file.dataset, thumb.dataset);
+      if (!nodes.current.error) {
+        if (typeof (_base = nodes.current).pause === "function") {
+          _base.pause();
+        }
+      }
+      $.replace(nodes.current, file);
+      if (elType === 'video') {
+        file.loop = true;
+        if (Conf['Autoplay']) {
+          file.play();
+        }
+        if (Conf['Show Controls']) {
+          ImageCommon.addControls(file);
+        }
+      }
+      nodes.count.textContent = +thumb.dataset.id + 1;
+      nodes.current = file;
+      nodes.frame.scrollTop = 0;
+      nodes.next.focus();
+      if (slideshow) {
+        Gallery.setupTimer();
+      } else {
+        Gallery.cb.stop();
+      }
+      if (Conf['Scroll to Post'] && (post = (_ref = (post = g.posts[file.dataset.post])) != null ? _ref.nodes.root : void 0)) {
+        Header.scrollTo(post);
+      }
+      return nodes.thumbs.scrollTop = thumb.offsetTop + thumb.offsetHeight / 2 - nodes.thumbs.clientHeight / 2;
+    },
+    error: function(file, thumb) {
+      var _ref;
+      if (((_ref = file.error) != null ? _ref.code : void 0) === MediaError.MEDIA_ERR_DECODE) {
+        return new Notice('error', 'Corrupt or unplayable video', 30);
+      }
+      if (file.src.split('/')[2] !== 'i.4cdn.org') {
+        return;
+      }
+      return ImageCommon.error(file, g.posts[file.dataset.post], null, function(URL) {
+        if (!URL) {
+          return;
+        }
+        thumb.href = URL;
+        if (Gallery.nodes.current === file) {
+          return file.src = URL;
+        }
+      });
+    },
+    cleanupTimer: function() {
+      var current;
+      clearTimeout(Gallery.timeoutID);
+      current = Gallery.nodes.current;
+      $.off(current, 'canplaythrough load', Gallery.startTimer);
+      return $.off(current, 'ended', Gallery.cb.next);
+    },
+    startTimer: function() {
+      return Gallery.timeoutID = setTimeout(Gallery.checkTimer, Gallery.delay * $.SECOND);
+    },
+    setupTimer: function() {
+      var current, isVideo;
+      Gallery.cleanupTimer();
+      current = Gallery.nodes.current;
+      isVideo = current.nodeName === 'VIDEO';
+      if (isVideo) {
+        current.play();
+      }
+      if ((isVideo ? current.readyState >= 4 : current.complete) || current.nodeName === 'IFRAME') {
+        return Gallery.startTimer();
+      } else {
+        return $.on(current, (isVideo ? 'canplaythrough' : 'load'), Gallery.startTimer);
+      }
+    },
+    checkTimer: function() {
+      var current;
+      current = Gallery.nodes.current;
+      if (current.nodeName === 'VIDEO' && !current.paused) {
+        $.on(current, 'ended', Gallery.cb.next);
+        return current.loop = false;
+      } else {
+        return Gallery.cb.next();
+      }
+    },
     cb: {
       keybinds: function(e) {
         var cb, key;
@@ -10456,7 +10589,7 @@
         }
         cb = (function() {
           switch (key) {
-            case 'Esc':
+            case Conf['Close']:
             case Conf['Open Gallery']:
               return Gallery.cb.close;
             case 'Right':
@@ -10466,6 +10599,10 @@
             case 'Left':
             case '':
               return Gallery.cb.prev;
+            case Conf['Pause']:
+              return Gallery.cb.pause;
+            case Conf['Slideshow']:
+              return Gallery.cb.toggleSlideshow;
           }
         })();
         if (!cb) {
@@ -10476,110 +10613,34 @@
         return cb();
       },
       open: function(e) {
-        var el, elType, file, name, nodes, post, rect, top, _base, _ref;
         if (e) {
           e.preventDefault();
         }
-        if (!this) {
-          return;
+        if (this) {
+          return Gallery.open(this);
         }
-        nodes = Gallery.nodes;
-        name = nodes.name;
-        if (el = $('.gal-highlight', nodes.thumbs)) {
-          $.rmClass(el, 'gal-highlight');
-        }
-        $.addClass(this, 'gal-highlight');
-        elType = this.dataset.isVideo ? 'video' : /\.pdf$/.test(this.href) ? 'iframe' : 'img';
-        $[elType === 'iframe' ? 'addClass' : 'rmClass'](nodes.el, 'gal-pdf');
-        file = $.el(elType, {
-          src: name.href = this.href,
-          title: name.download = name.textContent = this.title
-        });
-        $.extend(file.dataset, this.dataset);
-        if (typeof (_base = nodes.current).pause === "function") {
-          _base.pause();
-        }
-        $.replace(nodes.current, file);
-        if (this.dataset.isVideo) {
-          Video.configure(file);
-        }
-        nodes.count.textContent = +this.dataset.id + 1;
-        nodes.current = file;
-        nodes.frame.scrollTop = 0;
-        nodes.next.focus();
-        if (Conf['Scroll to Post'] && (post = (_ref = (post = g.posts[file.dataset.post])) != null ? _ref.nodes.root : void 0)) {
-          Header.scrollTo(post);
-        }
-        $.on(file, 'error', function() {
-          return Gallery.cb.error(file, thumb);
-        });
-        rect = this.getBoundingClientRect();
-        top = rect.top;
-        if (top > 0) {
-          top += rect.height - doc.clientHeight;
-          if (top < 0) {
-            return;
-          }
-        }
-        return nodes.thumbs.scrollTop += top;
       },
       image: function(e) {
         e.preventDefault();
         e.stopPropagation();
         return Gallery.build(this);
       },
-      error: function(img, thumb) {
-        var URL, post, src;
-        post = Get.postFromLink($.el('a', {
-          href: img.dataset.post
-        }));
-        delete post.file.fullImage;
-        src = this.src.split('/');
-        if (src[2] === 'i.4cdn.org') {
-          URL = Redirect.to('file', {
-            boardID: src[3],
-            filename: src[src.length - 1]
-          });
-          if (URL) {
-            thumb.href = URL;
-            if (Gallery.nodes.current !== img) {
-              return;
-            }
-            img.src = URL;
-            return;
-          }
-          if (g.DEAD || post.isDead || post.file.isDead) {
-            return;
-          }
-        }
-        return $.ajax("//a.4cdn.org/" + post.board + "/thread/" + post.thread + ".json", {
-          onload: function() {
-            var i, postObj, posts;
-            if (this.status !== 200) {
-              return;
-            }
-            i = 0;
-            posts = this.response.posts;
-            while (postObj = posts[i++]) {
-              if (postObj.no === post.ID) {
-                break;
-              }
-            }
-            if (!postObj.no) {
-              return post.kill();
-            }
-            if (postObj.filedeleted) {
-              return post.kill(true);
-            }
-          }
-        });
-      },
       prev: function() {
         return Gallery.cb.open.call(Gallery.images[+Gallery.nodes.current.dataset.id - 1] || Gallery.images[Gallery.images.length - 1]);
       },
       next: function() {
         return Gallery.cb.open.call(Gallery.images[+Gallery.nodes.current.dataset.id + 1] || Gallery.images[0]);
       },
+      enterKey: function() {
+        if (Gallery.nodes.current.paused) {
+          return Gallery.nodes.current.play();
+        } else {
+          return Gallery.cb.next();
+        }
+      },
+      click: function() {
+        return Gallery.cb[Gallery.nodes.current.controls ? 'stop' : 'enterKey']();
+      },
       toggle: function() {
         return (Gallery.nodes ? Gallery.cb.close : Gallery.build)();
       },
@@ -10588,41 +10649,66 @@
           return Gallery.cb.close();
         }
       },
-      advance: function() {
-        if (Gallery.nodes.current.controls) {
-          return;
-        }
-        if (Gallery.nodes.current.paused) {
-          return Gallery.nodes.current.play();
-        }
-        return Gallery.cb.next();
-      },
       pause: function() {
         var current;
+        Gallery.cb.stop();
         current = Gallery.nodes.current;
-        if (current.nodeType === 'VIDEO') {
+        if (current.nodeName === 'VIDEO') {
           return current[current.paused ? 'play' : 'pause']();
         }
       },
+      start: function() {
+        $.addClass(Gallery.nodes.buttons, 'gal-playing');
+        Gallery.slideshow = true;
+        return Gallery.setupTimer();
+      },
+      stop: function() {
+        var current;
+        if (!Gallery.slideshow) {
+          return;
+        }
+        Gallery.cleanupTimer();
+        current = Gallery.nodes.current;
+        current.loop = current.nodeName === 'VIDEO';
+        $.rmClass(Gallery.nodes.buttons, 'gal-playing');
+        return Gallery.slideshow = false;
+      },
       close: function() {
         var _base;
         if (typeof (_base = Gallery.nodes.current).pause === "function") {
           _base.pause();
         }
         $.rm(Gallery.nodes.el);
+        $.rmClass(doc, 'gallery-open');
+        if (Conf['Fullscreen Gallery']) {
+          $.off(d, 'fullscreenchange mozfullscreenchange webkitfullscreenchange', Gallery.cb.close);
+          if (typeof d.mozCancelFullScreen === "function") {
+            d.mozCancelFullScreen();
+          }
+          if (typeof d.webkitExitFullscreen === "function") {
+            d.webkitExitFullscreen();
+          }
+        }
         delete Gallery.nodes;
-        d.body.style.overflow = '';
+        delete Gallery.fullIDs;
+        doc.style.overflow = '';
         $.off(d, 'keydown', Gallery.cb.keybinds);
-        return $.on(d, 'keydown', Keybinds.keydown);
+        if (Conf['Keybinds']) {
+          $.on(d, 'keydown', Keybinds.keydown);
+        }
+        return clearTimeout(Gallery.timeoutID);
       },
       setFitness: function() {
         return (this.checked ? $.addClass : $.rmClass)(doc, "gal-" + (this.name.toLowerCase().replace(/\s+/g, '-')));
+      },
+      setDelay: function() {
+        return Gallery.delay = +this.value;
       }
     },
     menu: {
       init: function() {
-        var createSubEntry, el, name, subEntries;
-        if (!Conf['Gallery']) {
+        var createSubEntry, el, name, subEntries, _ref;
+        if (!(((_ref = g.VIEW) === 'index' || _ref === 'thread') && Conf['Gallery'])) {
           return;
         }
         el = $.el('span', {
@@ -10655,10 +10741,149 @@
         return {
           el: label
         };
+      },
+      createSubEntries: function() {
+        var delayInput, delayLabel, item, subEntries;
+        subEntries = (function() {
+          var _i, _len, _ref, _results;
+          _ref = ['Hide Thumbnails', 'Fit Width', 'Fit Height', 'Scroll to Post'];
+          _results = [];
+          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+            item = _ref[_i];
+            _results.push(Gallery.menu.createSubEntry(item));
+          }
+          return _results;
+        })();
+        delayLabel = $.el('label', {
+          innerHTML: "Slide Delay: <input type=\"number\" name=\"Slide Delay\" min=\"0\" step=\"any\" class=\"field\">"
+        });
+        delayInput = delayLabel.firstElementChild;
+        delayInput.value = Gallery.delay;
+        $.on(delayInput, 'change', Gallery.cb.setDelay);
+        $.on(delayInput, 'change', $.cb.value);
+        subEntries.push({
+          el: delayLabel
+        });
+        return subEntries;
       }
     }
   };
 
+  ImageCommon = {
+    rewind: function(el) {
+      if (el.nodeName === 'VIDEO') {
+        if (el.readyState >= el.HAVE_METADATA) {
+          return el.currentTime = 0;
+        }
+      } else if (/\.gif$/.test(el.src)) {
+        return $.queueTask(function() {
+          return el.src = el.src;
+        });
+      }
+    },
+    pushCache: function(el) {
+      ImageCommon.cache = el;
+      return $.on(el, 'error', ImageCommon.cacheError);
+    },
+    popCache: function() {
+      var el;
+      el = ImageCommon.cache;
+      $.off(el, 'error', ImageCommon.cacheError);
+      delete ImageCommon.cache;
+      return el;
+    },
+    cacheError: function() {
+      if (ImageCommon.cache === this) {
+        return delete ImageCommon.cache;
+      }
+    },
+    decodeError: function(file, post) {
+      var message, _ref;
+      if (((_ref = file.error) != null ? _ref.code : void 0) !== MediaError.MEDIA_ERR_DECODE) {
+        return false;
+      }
+      if (!(message = $('.warning', post.file.thumb.parentNode))) {
+        message = $.el('div', {
+          className: 'warning'
+        });
+        $.after(post.file.thumb, message);
+      }
+      message.textContent = 'Error: Corrupt or unplayable video';
+      return true;
+    },
+    error: function(file, post, delay, cb) {
+      var URL, redirect, src, timeoutID;
+      src = post.file.URL.split('/');
+      URL = Redirect.to('file', {
+        boardID: post.board.ID,
+        filename: src[src.length - 1]
+      });
+      if (!(Conf['404 Redirect'] && URL && Redirect.securityCheck(URL))) {
+        URL = null;
+      }
+      if ((post.isDead || post.file.isDead) && file.src.split('/')[2] === 'i.4cdn.org') {
+        return cb(URL);
+      }
+      if (delay != null) {
+        timeoutID = setTimeout((function() {
+          return cb(URL);
+        }), delay);
+      }
+      if (post.isDead || post.file.isDead) {
+        return;
+      }
+      redirect = function() {
+        if (file.src.split('/')[2] === 'i.4cdn.org') {
+          if (delay != null) {
+            clearTimeout(timeoutID);
+          }
+          return cb(URL);
+        }
+      };
+      return $.ajax("//a.4cdn.org/" + post.board + "/thread/" + post.thread + ".json", {
+        onload: function() {
+          var postObj, _i, _len, _ref;
+          if (this.status === 404) {
+            post.kill();
+          }
+          if (this.status !== 200) {
+            return redirect();
+          }
+          _ref = this.response.posts;
+          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+            postObj = _ref[_i];
+            if (postObj.no === post.ID) {
+              break;
+            }
+          }
+          if (postObj.no !== post.ID) {
+            post.kill();
+            return redirect();
+          } else if (postObj.filedeleted) {
+            post.kill(true);
+            return redirect();
+          } else {
+            return URL = post.file.URL;
+          }
+        }
+      });
+    },
+    addControls: function(video) {
+      var handler;
+      handler = function() {
+        var t;
+        $.off(video, 'mouseover', handler);
+        t = new Date().getTime();
+        return $.asap((function() {
+          return (typeof chrome !== "undefined" && chrome !== null) || (video.readyState >= 3 && video.currentTime <= Math.max(0.1, video.duration - 0.5)) || new Date().getTime() >= t + 1000;
+        }), function() {
+          return video.controls = true;
+        });
+      };
+      return $.on(video, 'mouseover', handler);
+    }
+  };
+
   ImageExpand = {
     init: function() {
       if (g.VIEW === 'catalog' || !Conf['Image Expansion']) {
diff --git a/builds/crx/script.js b/builds/crx/script.js
index c00c1d1b6..07b05489c 100644
--- a/builds/crx/script.js
+++ b/builds/crx/script.js
@@ -88,7 +88,7 @@
 'use strict';
 
 (function() {
-  var $, $$, Anonymize, ArchiveLink, Banner, Board, Build, Callbacks, CatalogLinks, CatalogThread, Clone, Color, Conf, Config, CrossOrigin, CustomCSS, DataBoard, DeleteLink, Dice, DownloadLink, E, ExpandComment, ExpandThread, FappeTyme, Favicon, FileInfo, Filter, Flash, Fourchan, Gallery, Get, GlobalMessage, Header, IDColor, ImageExpand, ImageHover, ImageLoader, Index, JSColor, Keybinds, Labels, Linkify, Main, MarkNewIPs, MascotTools, Mascots, Menu, Nav, Navigate, Notice, PSAHiding, Polyfill, Post, PostHiding, QR, QuoteBacklink, QuoteInline, QuoteMarkers, QuotePreview, QuoteStrikeThrough, QuoteThreading, Quotify, RandomAccessList, Recursive, Redirect, RelativeDates, RemoveSpoilers, Report, ReportLink, RevealSpoilers, Rice, Sauce, Settings, SimpleDict, Style, ThemeTools, Themes, Thread, ThreadExcerpt, ThreadStats, ThreadUpdater, ThreadWatcher, Time, TrashQueue, UI, Unread, Video, c, d, doc, editMascot, editTheme, g, userNavigation,
+  var $, $$, Anonymize, ArchiveLink, Banner, Board, Build, Callbacks, CatalogLinks, CatalogThread, Clone, Color, Conf, Config, CrossOrigin, CustomCSS, DataBoard, DeleteLink, Dice, DownloadLink, E, ExpandComment, ExpandThread, FappeTyme, Favicon, FileInfo, Filter, Flash, Fourchan, Gallery, Get, GlobalMessage, Header, IDColor, ImageCommon, ImageExpand, ImageHover, ImageLoader, Index, JSColor, Keybinds, Labels, Linkify, Main, MarkNewIPs, MascotTools, Mascots, Menu, Nav, Navigate, Notice, PSAHiding, Polyfill, Post, PostHiding, QR, QuoteBacklink, QuoteInline, QuoteMarkers, QuotePreview, QuoteStrikeThrough, QuoteThreading, Quotify, RandomAccessList, Recursive, Redirect, RelativeDates, RemoveSpoilers, Report, ReportLink, RevealSpoilers, Rice, Sauce, Settings, SimpleDict, Style, ThemeTools, Themes, Thread, ThreadExcerpt, ThreadStats, ThreadUpdater, ThreadWatcher, Time, TrashQueue, UI, Unread, Video, c, d, doc, editMascot, editTheme, g, userNavigation,
     __slice = [].slice,
     __indexOf = [].indexOf || function(item) { for (var i = 0, l = this.length; i < l; i++) { if (i in this && this[i] === item) return i; } return -1; },
     __hasProp = {}.hasOwnProperty,
@@ -10372,8 +10372,8 @@
 
   Gallery = {
     init: function() {
-      var el;
-      if (g.BOARD === 'f' || !Conf['Gallery']) {
+      var el, _ref;
+      if (!(((_ref = g.VIEW) === 'index' || _ref === 'thread') && Conf['Gallery']) || g.BOARD === 'f') {
         return;
       }
       el = $.el('a', {
@@ -10395,7 +10395,7 @@
         return;
       }
       if (Gallery.nodes) {
-        Gallery.generateThumb($('.file', this.nodes.root));
+        Gallery.generateThumb(this);
         Gallery.nodes.total.textContent = Gallery.images.length;
       }
       if (!Conf['Image Expansion']) {
@@ -10403,14 +10403,30 @@
       }
     },
     build: function(image) {
-      var cb, createSubEntry, dialog, el, file, i, key, menuButton, name, nodes, value, _i, _len, _ref, _ref1;
+      var candidate, cb, dialog, entry, file, key, menuButton, nodes, post, thumb, value, _i, _j, _len, _len1, _ref, _ref1, _ref2;
+      if (Conf['Fullscreen Gallery']) {
+        $.one(d, 'fullscreenchange mozfullscreenchange webkitfullscreenchange', function() {
+          return $.on(d, 'fullscreenchange mozfullscreenchange webkitfullscreenchange', cb.close);
+        });
+        if (typeof doc.mozRequestFullScreen === "function") {
+          doc.mozRequestFullScreen();
+        }
+        if (typeof doc.webkitRequestFullScreen === "function") {
+          doc.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT);
+        }
+      }
       Gallery.images = [];
       nodes = Gallery.nodes = {};
+      Gallery.fullIDs = {};
+      Gallery.slideshow = false;
       nodes.el = dialog = $.el('div', {
-        id: 'a-gallery',
-        innerHTML: "<div class=gal-viewport>\n  <span class=gal-buttons>\n    <a class=\"menu-button\" href=\"javascript:;\"><i></i></a>\n    <a href=javascript:; class=gal-close>×</a>\n  </span>\n  <a class=gal-name target=\"_blank\"></a>\n  <span class=gal-count>\n    <span class='count'></span> / <span class='total'></span>\n  </span>\n  <div class=gal-prev></div>\n  <div class=gal-image>\n    <a href=javascript:;><img></a>\n  </div>\n  <div class=gal-next></div>\n</div>\n<div class=gal-thumbnails></div>"
+        id: 'a-gallery'
+      });
+      $.extend(dialog, {
+        innerHTML: "<div class=\"gal-viewport\">\r<span class=\"gal-buttons\">\r<a href=\"javascript:;\" class=\"gal-start\" title=\"Start slideshow (S to toggle)\"><i></i></a>\r<a href=\"javascript:;\" class=\"gal-stop\" title=\"Stop slideshow (S to toggle)\"><i></i></a>\r<a href=\"javascript:;\" class=\"menu-button\"><i></i></a>\r<a href=\"javascript:;\" class=\"gal-close\">×</a>\r</span>\r<a class=\"gal-name\" target=\"_blank\"></a>\r<span class=\"gal-count\">\r<span class=\"count\"></span> / <span class=\"total\"></span>\r</span>\r<div class=\"gal-prev\"></div>\r<div class=\"gal-image\">\r<a href=\"javascript:;\"><img></a>\r</div>\r<div class=\"gal-next\"></div>\r</div>\r<div class=\"gal-thumbnails\"></div>"
       });
       _ref = {
+        buttons: '.gal-buttons',
         frame: '.gal-image',
         name: '.gal-name',
         count: '.count',
@@ -10424,58 +10440,71 @@
         nodes[key] = $(value, dialog);
       }
       menuButton = $('.menu-button', dialog);
-      nodes.menu = new UI.Menu();
+      nodes.menu = new UI.Menu('gallery');
       cb = Gallery.cb;
       $.on(nodes.frame, 'click', cb.blank);
-      $.on(nodes.next, 'click', cb.advance);
+      $.on(nodes.next, 'click', cb.click);
       $.on($('.gal-prev', dialog), 'click', cb.prev);
       $.on($('.gal-next', dialog), 'click', cb.next);
+      $.on($('.gal-start', dialog), 'click', cb.start);
+      $.on($('.gal-stop', dialog), 'click', cb.stop);
       $.on($('.gal-close', dialog), 'click', cb.close);
       $.on(menuButton, 'click', function(e) {
         return nodes.menu.toggle(e, this, g);
       });
-      createSubEntry = Gallery.menu.createSubEntry;
-      for (name in Config.gallery) {
-        el = createSubEntry(name).el;
-        nodes.menu.addEntry({
-          el: el,
-          order: 0
-        });
+      _ref1 = Gallery.menu.createSubEntries();
+      for (_i = 0, _len = _ref1.length; _i < _len; _i++) {
+        entry = _ref1[_i];
+        entry.order = 0;
+        nodes.menu.addEntry(entry);
       }
       $.on(d, 'keydown', cb.keybinds);
-      $.off(d, 'keydown', Keybinds.keydown);
-      _ref1 = $$('.post .file');
-      for (i = _i = 0, _len = _ref1.length; _i < _len; i = ++_i) {
-        file = _ref1[i];
-        if (!$('.fileDeletedRes, .fileDeleted', file)) {
-          Gallery.generateThumb(file);
+      if (Conf['Keybinds']) {
+        $.off(d, 'keydown', Keybinds.keydown);
+      }
+      _ref2 = $$('.post .file');
+      for (_j = 0, _len1 = _ref2.length; _j < _len1; _j++) {
+        file = _ref2[_j];
+        post = Get.postFromNode(file);
+        if (post.file.isDead) {
+          continue;
+        }
+        Gallery.generateThumb(post);
+        if (!image && Gallery.fullIDs[post.fullID]) {
+          candidate = post.file.thumb.parentNode;
+          if (Header.getTopOf(candidate) + candidate.getBoundingClientRect().height >= 0) {
+            image = candidate;
+          }
         }
       }
+      $.addClass(doc, 'gallery-open');
       $.add(d.body, dialog);
       nodes.thumbs.scrollTop = 0;
       nodes.current.parentElement.scrollTop = 0;
-      Gallery.cb.open.call(image ? $("[href*='" + image.pathname + "']", nodes.thumbs) : Gallery.images[0]);
-      d.body.style.overflow = 'hidden';
-      return nodes.total.textContent = i;
+      if (image) {
+        thumb = $("[href='" + image.href + "']", nodes.thumbs);
+      }
+      thumb || (thumb = Gallery.images[Gallery.images.length - 1]);
+      if (thumb) {
+        Gallery.open(thumb);
+      }
+      doc.style.overflow = 'hidden';
+      return nodes.total.textContent = Gallery.images.length;
     },
-    generateThumb: function(file) {
-      var post, thumb, thumbImg, title;
-      post = Get.postFromNode(file);
-      if (!(post.file && (post.file.isImage || post.file.isVideo || Conf['PDF in Gallery']))) {
+    generateThumb: function(post) {
+      var thumb, thumbImg, _ref, _ref1;
+      if (post.isClone || post.isHidden && !(((_ref = post.file) != null ? _ref.isImage : void 0) || ((_ref1 = post.file) != null ? _ref1.isVideo : void 0) || Conf['PDF in Gallery'])) {
         return;
       }
-      title = ($('.fileText a', file)).textContent;
+      Gallery.fullIDs[post.fullID] = true;
       thumb = $.el('a', {
         className: 'gal-thumb',
         href: post.file.URL,
         target: '_blank',
-        title: title
+        title: post.file.name
       });
       thumb.dataset.id = Gallery.images.length;
       thumb.dataset.post = post.fullID;
-      if (post.file.isVideo) {
-        thumb.dataset.isVideo = true;
-      }
       thumbImg = post.file.thumb.cloneNode(false);
       thumbImg.style.cssText = '';
       $.add(thumb, thumbImg);
@@ -10483,6 +10512,110 @@
       Gallery.images.push(thumb);
       return $.add(Gallery.nodes.thumbs, thumb);
     },
+    open: function(thumb) {
+      var el, elType, file, name, newID, nodes, oldID, post, slideshow, _base, _ref;
+      nodes = Gallery.nodes;
+      name = nodes.name;
+      oldID = +nodes.current.dataset.id;
+      newID = +thumb.dataset.id;
+      slideshow = Gallery.slideshow && (newID > oldID || (oldID === Gallery.images.length - 1 && newID === 0));
+      if (el = $('.gal-highlight', nodes.thumbs)) {
+        $.rmClass(el, 'gal-highlight');
+      }
+      $.addClass(thumb, 'gal-highlight');
+      elType = /\.webm$/.test(thumb.href) ? 'video' : /\.pdf$/.test(thumb.href) ? 'iframe' : 'image';
+      $[elType === 'iframe' ? 'addClass' : 'rmClass'](doc, 'gal-pdf');
+      file = $.el(elType, {
+        title: name.download = name.textContent = thumb.title
+      });
+      $.on(file, 'error', (function(_this) {
+        return function() {
+          return Gallery.error(file, thumb);
+        };
+      })(this));
+      file.src = name.href = thumb.href;
+      $.extend(file.dataset, thumb.dataset);
+      if (!nodes.current.error) {
+        if (typeof (_base = nodes.current).pause === "function") {
+          _base.pause();
+        }
+      }
+      $.replace(nodes.current, file);
+      if (elType === 'video') {
+        file.loop = true;
+        if (Conf['Autoplay']) {
+          file.play();
+        }
+        if (Conf['Show Controls']) {
+          ImageCommon.addControls(file);
+        }
+      }
+      nodes.count.textContent = +thumb.dataset.id + 1;
+      nodes.current = file;
+      nodes.frame.scrollTop = 0;
+      nodes.next.focus();
+      if (slideshow) {
+        Gallery.setupTimer();
+      } else {
+        Gallery.cb.stop();
+      }
+      if (Conf['Scroll to Post'] && (post = (_ref = (post = g.posts[file.dataset.post])) != null ? _ref.nodes.root : void 0)) {
+        Header.scrollTo(post);
+      }
+      return nodes.thumbs.scrollTop = thumb.offsetTop + thumb.offsetHeight / 2 - nodes.thumbs.clientHeight / 2;
+    },
+    error: function(file, thumb) {
+      var _ref;
+      if (((_ref = file.error) != null ? _ref.code : void 0) === MediaError.MEDIA_ERR_DECODE) {
+        return new Notice('error', 'Corrupt or unplayable video', 30);
+      }
+      if (file.src.split('/')[2] !== 'i.4cdn.org') {
+        return;
+      }
+      return ImageCommon.error(file, g.posts[file.dataset.post], null, function(URL) {
+        if (!URL) {
+          return;
+        }
+        thumb.href = URL;
+        if (Gallery.nodes.current === file) {
+          return file.src = URL;
+        }
+      });
+    },
+    cleanupTimer: function() {
+      var current;
+      clearTimeout(Gallery.timeoutID);
+      current = Gallery.nodes.current;
+      $.off(current, 'canplaythrough load', Gallery.startTimer);
+      return $.off(current, 'ended', Gallery.cb.next);
+    },
+    startTimer: function() {
+      return Gallery.timeoutID = setTimeout(Gallery.checkTimer, Gallery.delay * $.SECOND);
+    },
+    setupTimer: function() {
+      var current, isVideo;
+      Gallery.cleanupTimer();
+      current = Gallery.nodes.current;
+      isVideo = current.nodeName === 'VIDEO';
+      if (isVideo) {
+        current.play();
+      }
+      if ((isVideo ? current.readyState >= 4 : current.complete) || current.nodeName === 'IFRAME') {
+        return Gallery.startTimer();
+      } else {
+        return $.on(current, (isVideo ? 'canplaythrough' : 'load'), Gallery.startTimer);
+      }
+    },
+    checkTimer: function() {
+      var current;
+      current = Gallery.nodes.current;
+      if (current.nodeName === 'VIDEO' && !current.paused) {
+        $.on(current, 'ended', Gallery.cb.next);
+        return current.loop = false;
+      } else {
+        return Gallery.cb.next();
+      }
+    },
     cb: {
       keybinds: function(e) {
         var cb, key;
@@ -10491,7 +10624,7 @@
         }
         cb = (function() {
           switch (key) {
-            case 'Esc':
+            case Conf['Close']:
             case Conf['Open Gallery']:
               return Gallery.cb.close;
             case 'Right':
@@ -10501,6 +10634,10 @@
             case 'Left':
             case '':
               return Gallery.cb.prev;
+            case Conf['Pause']:
+              return Gallery.cb.pause;
+            case Conf['Slideshow']:
+              return Gallery.cb.toggleSlideshow;
           }
         })();
         if (!cb) {
@@ -10511,110 +10648,34 @@
         return cb();
       },
       open: function(e) {
-        var el, elType, file, name, nodes, post, rect, top, _base, _ref;
         if (e) {
           e.preventDefault();
         }
-        if (!this) {
-          return;
+        if (this) {
+          return Gallery.open(this);
         }
-        nodes = Gallery.nodes;
-        name = nodes.name;
-        if (el = $('.gal-highlight', nodes.thumbs)) {
-          $.rmClass(el, 'gal-highlight');
-        }
-        $.addClass(this, 'gal-highlight');
-        elType = this.dataset.isVideo ? 'video' : /\.pdf$/.test(this.href) ? 'iframe' : 'img';
-        $[elType === 'iframe' ? 'addClass' : 'rmClass'](nodes.el, 'gal-pdf');
-        file = $.el(elType, {
-          src: name.href = this.href,
-          title: name.download = name.textContent = this.title
-        });
-        $.extend(file.dataset, this.dataset);
-        if (typeof (_base = nodes.current).pause === "function") {
-          _base.pause();
-        }
-        $.replace(nodes.current, file);
-        if (this.dataset.isVideo) {
-          Video.configure(file);
-        }
-        nodes.count.textContent = +this.dataset.id + 1;
-        nodes.current = file;
-        nodes.frame.scrollTop = 0;
-        nodes.next.focus();
-        if (Conf['Scroll to Post'] && (post = (_ref = (post = g.posts[file.dataset.post])) != null ? _ref.nodes.root : void 0)) {
-          Header.scrollTo(post);
-        }
-        $.on(file, 'error', function() {
-          return Gallery.cb.error(file, thumb);
-        });
-        rect = this.getBoundingClientRect();
-        top = rect.top;
-        if (top > 0) {
-          top += rect.height - doc.clientHeight;
-          if (top < 0) {
-            return;
-          }
-        }
-        return nodes.thumbs.scrollTop += top;
       },
       image: function(e) {
         e.preventDefault();
         e.stopPropagation();
         return Gallery.build(this);
       },
-      error: function(img, thumb) {
-        var URL, post, src;
-        post = Get.postFromLink($.el('a', {
-          href: img.dataset.post
-        }));
-        delete post.file.fullImage;
-        src = this.src.split('/');
-        if (src[2] === 'i.4cdn.org') {
-          URL = Redirect.to('file', {
-            boardID: src[3],
-            filename: src[src.length - 1]
-          });
-          if (URL) {
-            thumb.href = URL;
-            if (Gallery.nodes.current !== img) {
-              return;
-            }
-            img.src = URL;
-            return;
-          }
-          if (g.DEAD || post.isDead || post.file.isDead) {
-            return;
-          }
-        }
-        return $.ajax("//a.4cdn.org/" + post.board + "/thread/" + post.thread + ".json", {
-          onload: function() {
-            var i, postObj, posts;
-            if (this.status !== 200) {
-              return;
-            }
-            i = 0;
-            posts = this.response.posts;
-            while (postObj = posts[i++]) {
-              if (postObj.no === post.ID) {
-                break;
-              }
-            }
-            if (!postObj.no) {
-              return post.kill();
-            }
-            if (postObj.filedeleted) {
-              return post.kill(true);
-            }
-          }
-        });
-      },
       prev: function() {
         return Gallery.cb.open.call(Gallery.images[+Gallery.nodes.current.dataset.id - 1] || Gallery.images[Gallery.images.length - 1]);
       },
       next: function() {
         return Gallery.cb.open.call(Gallery.images[+Gallery.nodes.current.dataset.id + 1] || Gallery.images[0]);
       },
+      enterKey: function() {
+        if (Gallery.nodes.current.paused) {
+          return Gallery.nodes.current.play();
+        } else {
+          return Gallery.cb.next();
+        }
+      },
+      click: function() {
+        return Gallery.cb[Gallery.nodes.current.controls ? 'stop' : 'enterKey']();
+      },
       toggle: function() {
         return (Gallery.nodes ? Gallery.cb.close : Gallery.build)();
       },
@@ -10623,41 +10684,66 @@
           return Gallery.cb.close();
         }
       },
-      advance: function() {
-        if (Gallery.nodes.current.controls) {
-          return;
-        }
-        if (Gallery.nodes.current.paused) {
-          return Gallery.nodes.current.play();
-        }
-        return Gallery.cb.next();
-      },
       pause: function() {
         var current;
+        Gallery.cb.stop();
         current = Gallery.nodes.current;
-        if (current.nodeType === 'VIDEO') {
+        if (current.nodeName === 'VIDEO') {
           return current[current.paused ? 'play' : 'pause']();
         }
       },
+      start: function() {
+        $.addClass(Gallery.nodes.buttons, 'gal-playing');
+        Gallery.slideshow = true;
+        return Gallery.setupTimer();
+      },
+      stop: function() {
+        var current;
+        if (!Gallery.slideshow) {
+          return;
+        }
+        Gallery.cleanupTimer();
+        current = Gallery.nodes.current;
+        current.loop = current.nodeName === 'VIDEO';
+        $.rmClass(Gallery.nodes.buttons, 'gal-playing');
+        return Gallery.slideshow = false;
+      },
       close: function() {
         var _base;
         if (typeof (_base = Gallery.nodes.current).pause === "function") {
           _base.pause();
         }
         $.rm(Gallery.nodes.el);
+        $.rmClass(doc, 'gallery-open');
+        if (Conf['Fullscreen Gallery']) {
+          $.off(d, 'fullscreenchange mozfullscreenchange webkitfullscreenchange', Gallery.cb.close);
+          if (typeof d.mozCancelFullScreen === "function") {
+            d.mozCancelFullScreen();
+          }
+          if (typeof d.webkitExitFullscreen === "function") {
+            d.webkitExitFullscreen();
+          }
+        }
         delete Gallery.nodes;
-        d.body.style.overflow = '';
+        delete Gallery.fullIDs;
+        doc.style.overflow = '';
         $.off(d, 'keydown', Gallery.cb.keybinds);
-        return $.on(d, 'keydown', Keybinds.keydown);
+        if (Conf['Keybinds']) {
+          $.on(d, 'keydown', Keybinds.keydown);
+        }
+        return clearTimeout(Gallery.timeoutID);
       },
       setFitness: function() {
         return (this.checked ? $.addClass : $.rmClass)(doc, "gal-" + (this.name.toLowerCase().replace(/\s+/g, '-')));
+      },
+      setDelay: function() {
+        return Gallery.delay = +this.value;
       }
     },
     menu: {
       init: function() {
-        var createSubEntry, el, name, subEntries;
-        if (!Conf['Gallery']) {
+        var createSubEntry, el, name, subEntries, _ref;
+        if (!(((_ref = g.VIEW) === 'index' || _ref === 'thread') && Conf['Gallery'])) {
           return;
         }
         el = $.el('span', {
@@ -10690,10 +10776,136 @@
         return {
           el: label
         };
+      },
+      createSubEntries: function() {
+        var delayInput, delayLabel, item, subEntries;
+        subEntries = (function() {
+          var _i, _len, _ref, _results;
+          _ref = ['Hide Thumbnails', 'Fit Width', 'Fit Height', 'Scroll to Post'];
+          _results = [];
+          for (_i = 0, _len = _ref.length; _i < _len; _i++) {
+            item = _ref[_i];
+            _results.push(Gallery.menu.createSubEntry(item));
+          }
+          return _results;
+        })();
+        delayLabel = $.el('label', {
+          innerHTML: "Slide Delay: <input type=\"number\" name=\"Slide Delay\" min=\"0\" step=\"any\" class=\"field\">"
+        });
+        delayInput = delayLabel.firstElementChild;
+        delayInput.value = Gallery.delay;
+        $.on(delayInput, 'change', Gallery.cb.setDelay);
+        $.on(delayInput, 'change', $.cb.value);
+        subEntries.push({
+          el: delayLabel
+        });
+        return subEntries;
       }
     }
   };
 
+  ImageCommon = {
+    rewind: function(el) {
+      if (el.nodeName === 'VIDEO') {
+        if (el.readyState >= el.HAVE_METADATA) {
+          return el.currentTime = 0;
+        }
+      } else if (/\.gif$/.test(el.src)) {
+        return $.queueTask(function() {
+          return el.src = el.src;
+        });
+      }
+    },
+    pushCache: function(el) {
+      ImageCommon.cache = el;
+      return $.on(el, 'error', ImageCommon.cacheError);
+    },
+    popCache: function() {
+      var el;
+      el = ImageCommon.cache;
+      $.off(el, 'error', ImageCommon.cacheError);
+      delete ImageCommon.cache;
+      return el;
+    },
+    cacheError: function() {
+      if (ImageCommon.cache === this) {
+        return delete ImageCommon.cache;
+      }
+    },
+    decodeError: function(file, post) {
+      var message, _ref;
+      if (((_ref = file.error) != null ? _ref.code : void 0) !== MediaError.MEDIA_ERR_DECODE) {
+        return false;
+      }
+      if (!(message = $('.warning', post.file.thumb.parentNode))) {
+        message = $.el('div', {
+          className: 'warning'
+        });
+        $.after(post.file.thumb, message);
+      }
+      message.textContent = 'Error: Corrupt or unplayable video';
+      return true;
+    },
+    error: function(file, post, delay, cb) {
+      var URL, redirect, src, timeoutID;
+      src = post.file.URL.split('/');
+      URL = Redirect.to('file', {
+        boardID: post.board.ID,
+        filename: src[src.length - 1]
+      });
+      if (!(Conf['404 Redirect'] && URL && Redirect.securityCheck(URL))) {
+        URL = null;
+      }
+      if ((post.isDead || post.file.isDead) && file.src.split('/')[2] === 'i.4cdn.org') {
+        return cb(URL);
+      }
+      if (delay != null) {
+        timeoutID = setTimeout((function() {
+          return cb(URL);
+        }), delay);
+      }
+      if (post.isDead || post.file.isDead) {
+        return;
+      }
+      redirect = function() {
+        if (file.src.split('/')[2] === 'i.4cdn.org') {
+          if (delay != null) {
+            clearTimeout(timeoutID);
+          }
+          return cb(URL);
+        }
+      };
+      return $.ajax(post.file.URL, {
+        onloadend: function() {
+          if (this.status === 200) {
+            return URL = post.file.URL;
+          } else {
+            if (this.status === 404) {
+              post.kill(true);
+            }
+            return redirect();
+          }
+        }
+      }, {
+        type: 'head'
+      });
+    },
+    addControls: function(video) {
+      var handler;
+      handler = function() {
+        var t;
+        $.off(video, 'mouseover', handler);
+        t = new Date().getTime();
+        return $.asap((function() {
+          return (typeof chrome !== "undefined" && chrome !== null) || (video.readyState >= 3 && video.currentTime <= Math.max(0.1, video.duration - 0.5)) || new Date().getTime() >= t + 1000;
+        }), function() {
+          return video.controls = true;
+        });
+      };
+      return $.on(video, 'mouseover', handler);
+    }
+  };
+
   ImageExpand = {
     init: function() {
       if (g.VIEW === 'catalog' || !Conf['Image Expansion']) {
diff --git a/src/General/html/Features/Gallery.html b/src/General/html/Features/Gallery.html
new file mode 100644
index 000000000..ed76ff59f
--- /dev/null
+++ b/src/General/html/Features/Gallery.html
@@ -0,0 +1,18 @@
+<div class="gal-viewport">
+  <span class="gal-buttons">
+    <a href="javascript:;" class="gal-start" title="Start slideshow (S to toggle)"><i></i></a>
+    <a href="javascript:;" class="gal-stop" title="Stop slideshow (S to toggle)"><i></i></a>
+    <a href="javascript:;" class="menu-button"><i></i></a>
+    <a href="javascript:;" class="gal-close">×</a>
+  </span>
+  <a class="gal-name" target="_blank"></a>
+  <span class="gal-count">
+    <span class="count"></span> / <span class="total"></span>
+  </span>
+  <div class="gal-prev"></div>
+  <div class="gal-image">
+    <a href="javascript:;"><img></a>
+  </div>
+  <div class="gal-next"></div>
+</div>
+<div class="gal-thumbnails"></div>
\ No newline at end of file
diff --git a/src/Images/Gallery.coffee b/src/Images/Gallery.coffee
index 503fd2e49..710b66ada 100644
--- a/src/Images/Gallery.coffee
+++ b/src/Images/Gallery.coffee
@@ -1,6 +1,6 @@
 Gallery =
   init: ->
-    return if g.BOARD is 'f' or !Conf['Gallery']
+    return if not (g.VIEW in ['index', 'thread'] and Conf['Gallery']) or g.BOARD is 'f'
 
     el = $.el 'a',
       href: 'javascript:;'
@@ -20,38 +20,30 @@ Gallery =
   node: ->
     return unless @file
     if Gallery.nodes
-      Gallery.generateThumb $ '.file', @nodes.root
+      Gallery.generateThumb @
       Gallery.nodes.total.textContent = Gallery.images.length
 
     unless Conf['Image Expansion']
       $.on @file.thumb.parentNode, 'click', Gallery.cb.image
 
   build: (image) ->
+    if Conf['Fullscreen Gallery']
+      $.one d, 'fullscreenchange mozfullscreenchange webkitfullscreenchange', ->
+        $.on d, 'fullscreenchange mozfullscreenchange webkitfullscreenchange', cb.close
+      doc.mozRequestFullScreen?()
+      doc.webkitRequestFullScreen?(Element.ALLOW_KEYBOARD_INPUT)
+
     Gallery.images  = []
     nodes = Gallery.nodes = {}
+    Gallery.fullIDs = {}
+    Gallery.slideshow = false
 
     nodes.el = dialog = $.el 'div',
       id: 'a-gallery'
-      innerHTML: """
-        <div class=gal-viewport>
-          <span class=gal-buttons>
-            <a class="menu-button" href="javascript:;"><i></i></a>
-            <a href=javascript:; class=gal-close>×</a>
-          </span>
-          <a class=gal-name target="_blank"></a>
-          <span class=gal-count>
-            <span class='count'></span> / <span class='total'></span>
-          </span>
-          <div class=gal-prev></div>
-          <div class=gal-image>
-            <a href=javascript:;><img></a>
-          </div>
-          <div class=gal-next></div>
-        </div>
-        <div class=gal-thumbnails></div>
-      """
+    $.extend dialog, <%= importHTML('Features/Gallery') %>
 
     nodes[key] = $ value, dialog for key, value of {
+      buttons: '.gal-buttons'
       frame:   '.gal-image'
       name:    '.gal-name'
       count:   '.count'
@@ -62,56 +54,64 @@ Gallery =
     }
 
     menuButton = $ '.menu-button', dialog
-    nodes.menu = new UI.Menu()
+    nodes.menu = new UI.Menu 'gallery'
 
     {cb} = Gallery
     $.on nodes.frame,             'click', cb.blank
-    $.on nodes.next,              'click', cb.advance
+    $.on nodes.next,              'click', cb.click
     $.on $('.gal-prev',  dialog), 'click', cb.prev
     $.on $('.gal-next',  dialog), 'click', cb.next
+    $.on $('.gal-start', dialog), 'click', cb.start
+    $.on $('.gal-stop',  dialog), 'click', cb.stop
     $.on $('.gal-close', dialog), 'click', cb.close
 
     $.on menuButton, 'click', (e) ->
       nodes.menu.toggle e, @, g
 
-    {createSubEntry} = Gallery.menu
-    for name of Config.gallery
-      {el} = createSubEntry name
-
-      nodes.menu.addEntry
-        el: el
-        order: 0
+    for entry in Gallery.menu.createSubEntries()
+      entry.order = 0
+      nodes.menu.addEntry entry
 
     $.on  d, 'keydown', cb.keybinds
-    $.off d, 'keydown', Keybinds.keydown
-    Gallery.generateThumb file for file, i in $$ '.post .file' when !$ '.fileDeletedRes, .fileDeleted', file
+    $.off d, 'keydown', Keybinds.keydown if Conf['Keybinds']
+    
+    for file in $$ '.post .file'
+      post = Get.postFromNode file
+      continue if post.file.isDead
+      Gallery.generateThumb post
+      # If no image to open is given, pick image we have scrolled to.
+      if !image and Gallery.fullIDs[post.fullID]
+        candidate = post.file.thumb.parentNode
+        if Header.getTopOf(candidate) + candidate.getBoundingClientRect().height >= 0
+          image = candidate
+    $.addClass doc, 'gallery-open'
+
     $.add d.body, dialog
 
     nodes.thumbs.scrollTop = 0
     nodes.current.parentElement.scrollTop = 0
 
-    Gallery.cb.open.call if image
-      $ "[href*='#{image.pathname}']", nodes.thumbs
-    else
-      Gallery.images[0]
+    thumb = $ "[href='#{image.href}']", nodes.thumbs if image
+    thumb or= Gallery.images[Gallery.images.length-1]
+    Gallery.open thumb if thumb
 
-    d.body.style.overflow = 'hidden'
-    nodes.total.textContent = i
+    doc.style.overflow = 'hidden'
+    nodes.total.textContent = Gallery.images.length
 
-  generateThumb: (file) ->
-    post  = Get.postFromNode file
-    return unless post.file and (post.file.isImage or post.file.isVideo or Conf['PDF in Gallery'])
-    title = ($ '.fileText a', file).textContent
+  generateThumb: (post) ->
+    return if post.isClone or post.isHidden and
+      not (post.file?.isImage or post.file?.isVideo or Conf['PDF in Gallery'])
+
+    Gallery.fullIDs[post.fullID] = true
 
     thumb = $.el 'a',
       className: 'gal-thumb'
       href:      post.file.URL
       target:    '_blank'
-      title:     title
+      title:     post.file.name
 
-    thumb.dataset.id      = Gallery.images.length
-    thumb.dataset.post    = post.fullID
-    thumb.dataset.isVideo = true if post.file.isVideo
+    thumb.dataset.id   = Gallery.images.length
+    thumb.dataset.post = post.fullID
 
     thumbImg = post.file.thumb.cloneNode false
     thumbImg.style.cssText = ''
@@ -122,12 +122,95 @@ Gallery =
     Gallery.images.push thumb
     $.add Gallery.nodes.thumbs, thumb
 
+  open: (thumb) ->
+    {nodes} = Gallery
+    {name}  = nodes
+    oldID = +nodes.current.dataset.id
+    newID = +thumb.dataset.id
+    slideshow = Gallery.slideshow and (newID > oldID or (oldID is Gallery.images.length-1 and newID is 0))
+
+    $.rmClass  el,    'gal-highlight' if el = $ '.gal-highlight', nodes.thumbs
+    $.addClass thumb, 'gal-highlight'
+
+    elType = if /\.webm$/.test(thumb.href)
+      'video'
+    else if /\.pdf$/.test(thumb.href)
+      'iframe'
+    else
+      'image'
+
+    $[if elType is 'iframe' then 'addClass' else 'rmClass'] doc, 'gal-pdf'
+    file = $.el elType,
+      title: name.download = name.textContent = thumb.title
+    $.on file, 'error', =>
+      Gallery.error file, thumb
+    file.src = name.href = thumb.href
+
+    $.extend  file.dataset, thumb.dataset
+    nodes.current.pause?() unless nodes.current.error
+    $.replace nodes.current, file
+    if elType is 'video'
+      file.loop = true
+      file.play() if Conf['Autoplay']
+      ImageCommon.addControls file if Conf['Show Controls']
+    nodes.count.textContent = +thumb.dataset.id + 1
+    nodes.current           = file
+    nodes.frame.scrollTop   = 0
+    nodes.next.focus()
+    if slideshow
+      Gallery.setupTimer()
+    else
+      Gallery.cb.stop()
+
+    # Scroll to post
+    if Conf['Scroll to Post'] and post = (post = g.posts[file.dataset.post])?.nodes.root
+      Header.scrollTo post
+
+    # Center selected thumbnail
+    nodes.thumbs.scrollTop = thumb.offsetTop + thumb.offsetHeight/2 - nodes.thumbs.clientHeight/2
+
+  error: (file, thumb) ->
+    if file.error?.code is MediaError.MEDIA_ERR_DECODE
+      return new Notice 'error', 'Corrupt or unplayable video', 30
+    return unless file.src.split('/')[2] is 'i.4cdn.org'
+    ImageCommon.error file, g.posts[file.dataset.post], null, (URL) ->
+      return unless URL
+      thumb.href = URL
+      file.src = URL if Gallery.nodes.current is file
+
+  cleanupTimer: ->
+    clearTimeout Gallery.timeoutID
+    {current} = Gallery.nodes
+    $.off current, 'canplaythrough load', Gallery.startTimer
+    $.off current, 'ended', Gallery.cb.next
+
+  startTimer: ->
+    Gallery.timeoutID = setTimeout Gallery.checkTimer, Gallery.delay * $.SECOND
+
+  setupTimer: ->
+    Gallery.cleanupTimer()
+    {current} = Gallery.nodes
+    isVideo = current.nodeName is 'VIDEO'
+    current.play() if isVideo
+    if (if isVideo then current.readyState >= 4 else current.complete) or current.nodeName is 'IFRAME'
+      Gallery.startTimer()
+    else
+      $.on current, (if isVideo then 'canplaythrough' else 'load'), Gallery.startTimer
+
+  checkTimer: ->
+    {current} = Gallery.nodes
+    if current.nodeName is 'VIDEO' and !current.paused
+      $.on current, 'ended', Gallery.cb.next
+      current.loop = false
+    else
+      Gallery.cb.next()
+
   cb:
     keybinds: (e) ->
       return unless key = Keybinds.keyCode e
 
       cb = switch key
-        when 'Esc', Conf['Open Gallery']
+        when Conf['Close'], Conf['Open Gallery']
           Gallery.cb.close
         when 'Right'
           Gallery.cb.next
@@ -135,6 +218,10 @@ Gallery =
           Gallery.cb.advance
         when 'Left', ''
           Gallery.cb.prev
+        when Conf['Pause']
+          Gallery.cb.pause
+        when Conf['Slideshow']
+          Gallery.cb.toggleSlideshow
 
       return unless cb
       e.stopPropagation()
@@ -143,80 +230,13 @@ Gallery =
 
     open: (e) ->
       e.preventDefault() if e
-      return unless @
-
-      {nodes} = Gallery
-      {name}  = nodes
-
-      $.rmClass  el, 'gal-highlight' if el = $ '.gal-highlight', nodes.thumbs
-      $.addClass @,  'gal-highlight'
-
-      elType = if @dataset.isVideo then 'video' else if /\.pdf$/.test(@href) then 'iframe' else 'img'
-      $[if elType is 'iframe' then 'addClass' else 'rmClass'] nodes.el, 'gal-pdf'
-
-      file = $.el elType,
-        src:   name.href     = @href
-        title: name.download = name.textContent = @title
-
-      $.extend  file.dataset,   @dataset
-      nodes.current.pause?()
-      $.replace nodes.current,  file
-      Video.configure file if @dataset.isVideo
-      nodes.count.textContent = +@dataset.id + 1
-      nodes.current           = file
-      nodes.frame.scrollTop   = 0
-      nodes.next.focus()
-      
-      # Scroll to post
-      if Conf['Scroll to Post'] and post = (post = g.posts[file.dataset.post])?.nodes.root
-        Header.scrollTo post
-
-      $.on file, 'error', ->
-        Gallery.cb.error file, thumb
-
-      # Scroll
-      rect  = @getBoundingClientRect()
-      {top} = rect
-      if top > 0
-        top += rect.height - doc.clientHeight
-        return if top < 0
-
-      nodes.thumbs.scrollTop += top
+      if @ then Gallery.open @
 
     image: (e) ->
       e.preventDefault()
       e.stopPropagation()
       Gallery.build @
 
-    error: (img, thumb) ->
-      post = Get.postFromLink $.el 'a', href: img.dataset.post
-      delete post.file.fullImage
-
-      src = @src.split '/'
-      if src[2] is 'i.4cdn.org'
-        URL = Redirect.to 'file',
-          boardID:  src[3]
-          filename: src[src.length - 1]
-        if URL
-          thumb.href = URL
-          return unless Gallery.nodes.current is img
-          img.src = URL
-          return
-        if g.DEAD or post.isDead or post.file.isDead
-          return
-
-      # XXX CORS for i.4cdn.org WHEN?
-      $.ajax "//a.4cdn.org/#{post.board}/thread/#{post.thread}.json", onload: ->
-        return if @status isnt 200
-        i = 0
-        {posts} = @response
-        while postObj = posts[i++]
-          break if postObj.no is post.ID
-        unless postObj.no
-          return post.kill()
-        if postObj.filedeleted
-          post.kill true
-
     prev:      ->
       Gallery.cb.open.call(
         Gallery.images[+Gallery.nodes.current.dataset.id - 1] or Gallery.images[Gallery.images.length - 1]
@@ -225,33 +245,54 @@ Gallery =
       Gallery.cb.open.call(
         Gallery.images[+Gallery.nodes.current.dataset.id + 1] or Gallery.images[0]
       )
+
+    enterKey:  -> if Gallery.nodes.current.paused then Gallery.nodes.current.play() else Gallery.cb.next()
+    click:     -> Gallery.cb[if Gallery.nodes.current.controls then 'stop' else 'enterKey']()
     toggle:    -> (if Gallery.nodes then Gallery.cb.close else Gallery.build)()
     blank: (e) -> Gallery.cb.close() if e.target is @
-
-    advance: ->
-      if Gallery.nodes.current.controls then return
-      if Gallery.nodes.current.paused   then return Gallery.nodes.current.play()
-      Gallery.cb.next()
     
     pause: ->
+      Gallery.cb.stop()
       {current} = Gallery.nodes
-      current[if current.paused then 'play' else 'pause']() if current.nodeType is 'VIDEO'
+      current[if current.paused then 'play' else 'pause']() if current.nodeName is 'VIDEO'
+
+    start: ->
+      $.addClass Gallery.nodes.buttons, 'gal-playing'
+      Gallery.slideshow = true
+      Gallery.setupTimer()
+
+    stop: ->
+      return unless Gallery.slideshow
+      Gallery.cleanupTimer()
+      {current} = Gallery.nodes
+      current.loop = current.nodeName is 'VIDEO'
+      $.rmClass Gallery.nodes.buttons, 'gal-playing'
+      Gallery.slideshow = false
 
     close: ->
       Gallery.nodes.current.pause?()
       $.rm Gallery.nodes.el
+      $.rmClass doc, 'gallery-open'
+      if Conf['Fullscreen Gallery']
+        $.off d, 'fullscreenchange mozfullscreenchange webkitfullscreenchange', Gallery.cb.close
+        d.mozCancelFullScreen?()
+        d.webkitExitFullscreen?()
       delete Gallery.nodes
-      d.body.style.overflow = ''
+      delete Gallery.fullIDs
+      doc.style.overflow = ''
 
       $.off d, 'keydown', Gallery.cb.keybinds
-      $.on  d, 'keydown', Keybinds.keydown
+      $.on  d, 'keydown', Keybinds.keydown if Conf['Keybinds']
+      clearTimeout Gallery.timeoutID
 
     setFitness: ->
       (if @checked then $.addClass else $.rmClass) doc, "gal-#{@name.toLowerCase().replace /\s+/g, '-'}"
 
+    setDelay: -> Gallery.delay = +@value
+
   menu:
     init: ->
-      return if !Conf['Gallery']
+      return unless g.VIEW in ['index', 'thread'] and Conf['Gallery']
 
       el = $.el 'span',
         textContent: 'Gallery'
@@ -277,3 +318,15 @@ Gallery =
       $.event 'change', null, input
       $.on input, 'change', $.cb.checked
       el: label
+
+    createSubEntries: ->
+      subEntries = (Gallery.menu.createSubEntry item for item in ['Hide Thumbnails', 'Fit Width', 'Fit Height', 'Scroll to Post'])
+
+      delayLabel = $.el 'label', <%= html('Slide Delay: <input type="number" name="Slide Delay" min="0" step="any" class="field">') %>
+      delayInput = delayLabel.firstElementChild
+      delayInput.value = Gallery.delay
+      $.on delayInput, 'change', Gallery.cb.setDelay
+      $.on delayInput, 'change', $.cb.value
+      subEntries.push el: delayLabel
+
+      subEntries
\ No newline at end of file
diff --git a/src/Images/ImageCommon.coffee b/src/Images/ImageCommon.coffee
new file mode 100644
index 000000000..2c55fbbbf
--- /dev/null
+++ b/src/Images/ImageCommon.coffee
@@ -0,0 +1,81 @@
+ImageCommon =
+  rewind: (el) ->
+    if el.nodeName is 'VIDEO'
+      el.currentTime = 0 if el.readyState >= el.HAVE_METADATA
+    else if /\.gif$/.test el.src
+      $.queueTask -> el.src = el.src
+
+  pushCache: (el) ->
+    ImageCommon.cache = el
+    $.on el, 'error', ImageCommon.cacheError
+
+  popCache: ->
+    el = ImageCommon.cache
+    $.off el, 'error', ImageCommon.cacheError
+    delete ImageCommon.cache
+    el
+
+  cacheError: ->
+    delete ImageCommon.cache if ImageCommon.cache is @
+
+  decodeError: (file, post) ->
+    return false unless file.error?.code is MediaError.MEDIA_ERR_DECODE
+    unless message = $ '.warning', post.file.thumb.parentNode
+      message = $.el 'div', className:   'warning'
+      $.after post.file.thumb, message
+    message.textContent = 'Error: Corrupt or unplayable video'
+    return true
+
+  error: (file, post, delay, cb) ->
+    src = post.file.URL.split '/'
+    URL = Redirect.to 'file',
+      boardID:  post.board.ID
+      filename: src[src.length - 1]
+    unless Conf['404 Redirect'] and URL and Redirect.securityCheck URL
+      URL = null
+
+    return cb URL if (post.isDead or post.file.isDead) and file.src.split('/')[2] is 'i.4cdn.org'
+
+    timeoutID = setTimeout (-> cb URL), delay if delay?
+    return if post.isDead or post.file.isDead
+    redirect = ->
+      if file.src.split('/')[2] is 'i.4cdn.org'
+        clearTimeout timeoutID if delay?
+        cb URL
+
+    <% if (type === 'crx') { %>
+    $.ajax post.file.URL,
+      onloadend: ->
+        if @status is 200
+          URL = post.file.URL
+        else
+          post.kill true if @status is 404
+          redirect()
+    ,
+      type: 'head'
+    <% } else { %>
+    # XXX CORS for i.4cdn.org WHEN?
+    $.ajax "//a.4cdn.org/#{post.board}/thread/#{post.thread}.json", onload: ->
+      post.kill() if @status is 404
+      return redirect() if @status isnt 200
+      for postObj in @response.posts
+        break if postObj.no is post.ID
+      if postObj.no isnt post.ID
+        post.kill()
+        redirect()
+      else if postObj.filedeleted
+        post.kill true
+        redirect()
+      else
+        URL = post.file.URL
+    <% } %>
+
+  # Add controls, but not until the mouse is moved over the video.
+  addControls: (video) ->
+    handler = ->
+      $.off video, 'mouseover', handler
+      # Hacky workaround for Firefox forever-loading bug for very short videos
+      t = new Date().getTime()
+      $.asap (-> chrome? or (video.readyState >= 3 and video.currentTime <= Math.max 0.1, (video.duration - 0.5)) or new Date().getTime() >= t + 1000), ->
+        video.controls = true
+    $.on video, 'mouseover', handler