doing it properly this time

mainPost always has index 0

public/src/forum/topic.js

@@ -76,7 +76,7 @@ define('forum/topic', dependencies, function(pagination, infinitescroll, threadT
 	};
 
 	Topic.toTop = function() {
-		navigator.scrollTop(1);
+		navigator.scrollTop(0);
 	};
 
 	Topic.toBottom = function() {

public/src/modules/navigator.js

@@ -110,7 +110,7 @@ define('navigator', ['forum/pagination'], function(pagination) {
 
 	navigator.scrollTop = function(index) {
 		if ($('li[data-index="' + index + '"]').length) {
-			navigator.scrollUp();
+			navigator.scrollToPost(index, true);
 		} else {
 			ajaxify.go(generateUrl());
 		}
@@ -118,7 +118,7 @@ define('navigator', ['forum/pagination'], function(pagination) {
 
 	navigator.scrollBottom = function(index) {
 		if ($('li[data-index="' + index + '"]').length) {
-			navigator.scrollDown();
+			navigator.scrollToPost(index, true);
 		} else {
 			index = parseInt(index, 10) + 1;
 			ajaxify.go(generateUrl(index));

src/topics.js

@@ -256,11 +256,25 @@ var async = require('async'),
 			}
 
 			async.parallel({
-				mainPost: function(next) {
-					Topics.getMainPost(tid, uid, next);
-				},
  				posts: function(next) {
-					Topics.getTopicPosts(tid, set, start, end, uid, reverse, next);
+					posts.getPidsFromSet(set, start, end, reverse, function(err, pids) {
+						if (err) {
+							return next(err);
+						}
+
+						pids = [topicData.mainPid].concat(pids);
+						posts.getPostsByPids(pids, tid, function(err, posts) {
+							if (err) {
+								return next(err);
+							}
+							start = parseInt(start, 10);
+							for(var i=0; i<posts.length; ++i) {
+								posts[i].index = start + i;
+							}
+							posts[0].index = 0;
+							Topics.addPostData(posts, uid, next);
+						});
+					});
  				},
 				category: function(next) {
 					Topics.getCategoryData(tid, next);
@@ -280,7 +294,7 @@ var async = require('async'),
 				}
 
 				topicData.category = results.category;
-				topicData.posts = results.mainPost.concat(results.posts);
+				topicData.posts = results.posts;
 				topicData.tags = results.tags;
 				topicData.thread_tools = results.threadTools;
 				topicData.pageCount = results.pageCount;