-            return base_path + "/" + arguments[1] + "/rev";
-
-               if (vname == "ajax_document_addtag")
-                       return base_path + "/" + arguments[1] + "/tags";
-
-               if (vname == "ajax_publish")
-                       return base_path + "/" + arguments[1] + "/publish";
-
-               console.log("Couldn't reverse match:", vname);
-               return "/404.html";
-       };
-
-       /*
-        * Document Abstraction
-        */
-       function WikiDocument(element_id) {
-               var meta = $('#' + element_id);
-               this.id = meta.attr('data-document-name');
-
-               this.revision = $("*[data-key='revision']", meta).text();
-               this.readonly = !!$("*[data-key='readonly']", meta).text();
-
-               this.galleryLink = $("*[data-key='gallery']", meta).text();
-               this.galleryImages = [];
-               this.text = null;
-               this.has_local_changes = false;
-               this._lock = -1;
-               this._context_lock = -1;
-               this._lock_count = 0;
-       };
-
-       WikiDocument.prototype.triggerDocumentChanged = function() {
-               $(document).trigger('wlapi_document_changed', this);
-       };
-       /*
-        * Fetch text of this document.
-        */
-       WikiDocument.prototype.fetch = function(params) {
-               params = $.extend({}, noops, params);
-               var self = this;
-               $.ajax({
-                       method: "GET",
-                       url: reverse("ajax_document_text", self.id),
-                       data: {"revision": self.revision},
-                       dataType: 'json',
-                       success: function(data) {
-                               var changed = false;
-
-                               if (self.text === null || self.revision !== data.revision) {
-                                       self.text = data.text;
-                                       self.revision = data.revision;
-                                       self.gallery = data.gallery;
-                                       changed = true;
-                                       self.triggerDocumentChanged();
-                               };
-
-                               self.has_local_changes = false;
-                               params['success'](self, changed);
-                       },
-                       error: function() {
-                               params['failure'](self, "Nie udało się wczytać treści dokumentu.");
-                       }
-               });
-       };
-       /*
-        * Fetch history of this document.
-        *
-        * from - First revision to fetch (default = 0) upto - Last revision to
-        * fetch (default = tip)
-        *
-        */
-       WikiDocument.prototype.fetchHistory = function(params) {
-               /* this doesn't modify anything, so no locks */
-               params = $.extend({}, noops, params);
-               var self = this;
-               $.ajax({
-                       method: "GET",
-                       url: reverse("ajax_document_history", self.id),
-                       dataType: 'json',
-                       data: {
-                               "from": params['from'],
-                               "upto": params['upto']
-                       },
-                       success: function(data) {
-                               params['success'](self, data);
-                       },
-                       error: function() {
-                               params['failure'](self, "Nie udało się wczytać historii dokumentu.");
-                       }
-               });
-       };
-       WikiDocument.prototype.fetchDiff = function(params) {
-               /* this doesn't modify anything, so no locks */
-               var self = this;
-               params = $.extend({
-                       'from': self.revision,
-                       'to': self.revision
-               }, noops, params);
-               $.ajax({
-                       method: "GET",
-                       url: reverse("ajax_document_diff", self.id),
-                       dataType: 'html',
-                       data: {
-                               "from": params['from'],
-                               "to": params['to']
-                       },
-                       success: function(data) {
-                               params['success'](self, data);
-                       },
-                       error: function() {
-                               params['failure'](self, "Nie udało się wczytać porównania wersji.");
-                       }
-               });
-       };
-
-    WikiDocument.prototype.checkRevision = function(params) {
+            return base_path + "/rev/" + arguments[1] + '/';
+
+        if (vname == "ajax_document_pubmark")
+            return base_path + "/pubmark/" + arguments[1] + '/';
+
+        if (vname == "ajax_cover_preview")
+            return "/cover/preview/";
+
+        console.log("Couldn't reverse match:", vname);
+        return "/404.html";
+    }
+
+    /*
+     * Document Abstraction
+     */
+    function WikiDocument(element_id) {
+        var meta = $('#' + element_id);
+        this.id = meta.attr('data-chunk-id');
+
+        this.revision = $("*[data-key='revision']", meta).text();
+        this.readonly = !!$("*[data-key='readonly']", meta).text();
+
+        this.galleryLink = $("*[data-key='gallery']", meta).text();
+        this.galleryStart = parseInt($("*[data-key='gallery-start']", meta).text());
+
+        var diff = $("*[data-key='diff']", meta).text();
+        if (diff) {
+            diff = diff.split(',');
+            if (diff.length == 2 && diff[0] < diff[1])
+                this.diff = diff;
+            else if (diff.length == 1) {
+                diff = parseInt(diff);
+                if (!isNaN(diff))
+                    this.diff = [diff - 1, diff];
+            }
+        }
+
+        this.galleryImages = [];
+        this.text = null;
+        this.has_local_changes = false;
+        this._lock = -1;
+        this._context_lock = -1;
+        this._lock_count = 0;
+    }
+
+    WikiDocument.prototype.triggerDocumentChanged = function() {
+        $(document).trigger('wlapi_document_changed', this);
+    };
+    /*
+     * Fetch text of this document.
+     */
+    WikiDocument.prototype.fetch = function(params) {
+        params = $.extend({}, noops, params);
+        var self = this;
+        $.ajax({
+            method: "GET",
+            url: reverse("ajax_document_text", self.id),
+            data: {"revision": self.revision},
+            dataType: 'json',
+            success: function(data) {
+                var changed = false;
+
+                if (self.text === null || self.revision !== data.revision) {
+                    self.text = data.text;
+                    self.revision = data.revision;
+                    self.gallery = data.gallery;
+                    changed = true;
+                    self.triggerDocumentChanged();
+                }
+
+                self.has_local_changes = false;
+                params['success'](self, changed);
+            },
+            error: function() {
+                params['failure'](self, "Nie udało się wczytać treści dokumentu.");
+            }
+        });
+    };
+    /*
+     * Fetch history of this document.
+     *
+     * from - First revision to fetch (default = 0) upto - Last revision to
+     * fetch (default = tip)
+     *
+     */
+    WikiDocument.prototype.fetchHistory = function(params) {
+        /* this doesn't modify anything, so no locks */
+        params = $.extend({}, noops, params);
+        var self = this;
+        $.ajax({
+            method: "GET",
+            url: reverse("ajax_document_history", self.id),
+            dataType: 'json',
+            data: {
+                "from": params['from'],
+                "upto": params['upto']
+            },
+            success: function(data) {
+                params['success'](self, data);
+            },
+            error: function() {
+                params['failure'](self, "Nie udało się wczytać historii dokumentu.");
+            }
+        });
+    };
+    WikiDocument.prototype.fetchDiff = function(params) {