Speed up post hiding, do not load the hidden posts list for each post being processed

boards/static/js/main.js

@@ -143,11 +143,15 b' function getHiddenPosts() {'
     return arr;
 }
 
-function processPostHiding(post) {
+function processPostHiding(posts) {
     var hiddenPosts = getHiddenPosts();
-    if (hiddenPosts.indexOf(post.attr("id")) > -1) {
-        post.toggleClass("hidden_post");
-    }
+
+    $.each(posts, function(index) {
+        var post = $(this);
+        if (hiddenPosts.indexOf(post.attr("id")) > -1) {
+            post.toggleClass("hidden_post");
+        }
+    });
 }
 
 /**
@@ -158,7 +162,7 b' function addScriptsToPost(post) {'
     addRefLinkPreview(post[0]);
     highlightCode(post);
     processVolumeUser(post.find("video,audio"));
-    processPostHiding(post);
+    processPostHiding([post]);
 }
 
 /**
@@ -354,7 +358,5 b' function addContextMenu() {'
 
     compatibilityCrutches();
 
-    $('.post').each(function(index) {
-        processPostHiding($(this));
-    });
+    processPostHiding($('.post'));
 });