diff --git a/src/General/Build.coffee b/src/General/Build.coffee
index 12a5d38e8..e1bfa9bae 100644
--- a/src/General/Build.coffee
+++ b/src/General/Build.coffee
@@ -116,11 +116,11 @@ Build =
 
     if file?.isDeleted
       fileHTML = if isOP
-        "<div class=file id=f#{postID}><span class=fileThumb>" +
+        "<div class=file><span class=fileThumb>" +
           "<img src='#{staticPath}filedeleted#{gifIcon}' class=fileDeleted>" +
         "</span></div>"
       else
-        "<div class=file id=f#{postID}><span class=fileThumb>" +
+        "<div class=file><span class=fileThumb>" +
           "<img src='#{staticPath}filedeleted-res#{gifIcon}' class=fileDeletedRes>" +
         "</span></div>"
     else if file
@@ -154,7 +154,7 @@ Build =
       filename      = a.innerHTML.replace /'/g, '&apos;'
 
       fileDims = if file.name[-3..] is 'pdf' then 'PDF' else "#{file.width}x#{file.height}"
-      fileInfo = "<div class=fileText id=fT#{postID}#{if file.isSpoiler then " title='#{filename}'" else ''}>File: <a href='#{file.url}' target=_blank>#{file.timestamp}</a>" +
+      fileInfo = "<div class=fileText#{if file.isSpoiler then " title='#{filename}'" else ''}>File: <a href='#{file.url}' target=_blank>#{file.timestamp}</a>" +
         "-(#{fileSize}, #{fileDims}#{
           if file.isSpoiler
             ''
@@ -162,7 +162,7 @@ Build =
             ", <span#{if filename isnt shortFilename then " title='#{filename}'" else ''}>#{shortFilename}</span>"
         }" + ")</div>"
 
-      fileHTML = "<div class=file id=f#{postID}>#{fileInfo}#{imgSrc}</div>"
+      fileHTML = "<div class=file>#{fileInfo}#{imgSrc}</div>"
     else
       fileHTML = ''
 
@@ -186,7 +186,7 @@ Build =
       id: "pc#{postID}"
       className: "postContainer #{if isOP then 'op' else 'reply'}Container"
       innerHTML: \
-      (if isOP then '' else "<div class=sideArrows id=sa#{postID}>&gt;&gt;</div>") +
+      (if isOP then '' else "<div class=sideArrows>&gt;&gt;</div>") +
       "<div id=p#{postID} class='post #{if isOP then 'op' else 'reply'}#{
         if capcode is 'admin_highlight'
           ' highlightPost'
@@ -196,7 +196,7 @@ Build =
 
         (if isOP then fileHTML else '') +
 
-        "<div class='postInfo' id=pi#{postID}>" +
+        "<div class=postInfo>" +
           "<input type=checkbox name=#{postID} value=delete> " +
           "<span class=subject>#{subject or ''}</span> " +
           "<span class='nameBlock#{capcodeClass}'>" +
@@ -219,7 +219,7 @@ Build =
 
         (if isOP then '' else fileHTML) +
 
-        "<blockquote class=postMessage id=m#{postID}>#{comment or ''}</blockquote> " +
+        "<blockquote class=postMessage>#{comment or ''}</blockquote> " +
 
       '</div>'
 
diff --git a/src/General/Get.coffee b/src/General/Get.coffee
index afcdbc6e2..82eccdabb 100644
--- a/src/General/Get.coffee
+++ b/src/General/Get.coffee
@@ -12,12 +12,8 @@ Get =
   threadFromNode: (node) ->
     Get.threadFromRoot $.x 'ancestor::div[@class="thread"]', node
   postFromRoot: (root) ->
-    link    = $ 'a[title="Highlight this post"]', root
-    boardID = link.pathname.split('/')[1]
-    postID  = link.hash[2..]
-    index   = root.dataset.clone
-    post    = g.posts["#{boardID}.#{postID}"]
-    if index then post.clones[index] else post
+    post = g.posts[root.dataset.fullID]
+    if index = root.dataset.clone then post.clones[index] else post
   postFromNode: (node) ->
     Get.postFromRoot $.x 'ancestor::div[contains(@class,"postContainer")][1]', node
   contextFromNode: (node) ->
diff --git a/src/General/Header.coffee b/src/General/Header.coffee
index 74eb9648a..9f072a555 100644
--- a/src/General/Header.coffee
+++ b/src/General/Header.coffee
@@ -266,7 +266,7 @@ Header =
   hashScroll: ->
     hash = @location.hash[1..]
     return unless /^p\d+$/.test(hash) and post = $.id hash
-    return if (Get.postFromRoot post).isHidden
+    return if (Get.postFromNode post).isHidden
     Header.scrollTo post
   scrollTo: (root, down, needed) ->
     if down
diff --git a/src/General/Post.coffee b/src/General/Post.coffee
index 7591ed653..f2db77261 100644
--- a/src/General/Post.coffee
+++ b/src/General/Post.coffee
@@ -6,9 +6,10 @@ class Post
     @ID     = +root.id[2..]
     @fullID = "#{@board}.#{@ID}"
 
-    @cleanup root if that.isOriginalMarkup
     post = $ '.post',     root
     info = $ '.postInfo', post
+    @cleanup root, post if that.isOriginalMarkup
+    root.dataset.fullID = @fullID
     @nodes =
       root: root
       post: post
@@ -146,9 +147,11 @@ class Post
     if @file.isImage = /(jpg|png|gif)$/i.test @file.name
       @file.dimensions = fileText.textContent.match(/\d+x\d+/)[0]
 
-  cleanup: (root) ->
+  cleanup: (root, post) ->
     for node in $$ '.mobile', root
       $.rm node
+    for node in $$ '[id]', post
+      node.removeAttribute 'id'
     for node in $$ '.desktop', root
       $.rmClass node, 'desktop'
     return
diff --git a/src/Menu/Menu.coffee b/src/Menu/Menu.coffee
index 5803ed0ed..537d87e07 100644
--- a/src/Menu/Menu.coffee
+++ b/src/Menu/Menu.coffee
@@ -30,13 +30,4 @@ Menu =
     clone
 
   toggle: (e) ->
-    try
-      # Posts, inlined posts, hidden replies.
-      post = Get.postFromNode @
-    catch
-      post = if fullID = @parentNode.parentNode.dataset.fullID
-        g.threads[fullID].OP
-      else
-        # Hidden threads.
-        Get.threadFromNode(@).OP
-    Menu.menu.toggle e, @, post
+    Menu.menu.toggle e, @, Get.postFromNode @
diff --git a/src/Monitoring/ThreadUpdater.coffee b/src/Monitoring/ThreadUpdater.coffee
index 784c4738f..39dc11170 100644
--- a/src/Monitoring/ThreadUpdater.coffee
+++ b/src/Monitoring/ThreadUpdater.coffee
@@ -26,9 +26,9 @@ ThreadUpdater =
       cb:   @node
 
   node: ->
-    ThreadUpdater.thread       = @
-    ThreadUpdater.root         = @OP.nodes.root.parentNode
-    ThreadUpdater.lastPost     = +ThreadUpdater.root.lastElementChild.id.match(/\d+/)[0]
+    ThreadUpdater.thread   = @
+    ThreadUpdater.root     = @OP.nodes.root.parentNode
+    ThreadUpdater.lastPost = +Object.keys(@posts).sort()[-1..][0]
 
     for input in $$ 'input', ThreadUpdater.dialog
       if input.type is 'checkbox'
diff --git a/src/Monitoring/ThreadWatcher.coffee b/src/Monitoring/ThreadWatcher.coffee
index ab570ebb0..da939918c 100644
--- a/src/Monitoring/ThreadWatcher.coffee
+++ b/src/Monitoring/ThreadWatcher.coffee
@@ -60,7 +60,7 @@ ThreadWatcher =
       ThreadWatcher.refresh()
       $.event 'CloseMenu'
     toggle: ->
-      ThreadWatcher.toggle Get.postFromNode(@).thread
+      ThreadWatcher.toggle Get.threadFromNode @
     rm: ->
       [boardID, threadID] = @parentNode.dataset.fullID.split '.'
       ThreadWatcher.rm boardID, +threadID
diff --git a/src/Quotelinks/QuoteInline.coffee b/src/Quotelinks/QuoteInline.coffee
index b61aa5af3..15510cdc8 100644
--- a/src/Quotelinks/QuoteInline.coffee
+++ b/src/Quotelinks/QuoteInline.coffee
@@ -17,7 +17,7 @@ QuoteInline =
     if $.hasClass @, 'inlined'
       QuoteInline.rm @, boardID, threadID, postID, context
     else
-      return if $.x "ancestor::div[@id='p#{postID}']", @
+      return if $.x "ancestor::div[@id='pc#{postID}']", @
       QuoteInline.add @, boardID, threadID, postID, context
     @classList.toggle 'inlined'