fix

app/helpers/pool_versions_helper.rb

@@ -1,2 +1,14 @@
 module PoolVersionsHelper
+  def pool_version_diff(current)
+    prev = PoolVersion.where(["pool_id = ? and id < ?", current.pool_id, current.id]).order("id desc").first
+
+    if prev.nil?
+      return current.post_id_array.map {|x| content_tag("ins", "+#{x}")}.join(" ").html_safe
+    end
+
+    added = current.post_id_array - prev.post_id_array
+    removed = prev.post_id_array - current.post_id_array
+
+    added.map {|x| '<ins>+<a href="/posts/' + x.to_s + '">' + x.to_s + '</a></ins>'}.join(" ") + removed.map {|x| '<del>&ndash;<a href="/posts/' + x.to_s + '">' + x.to_s + '</a></del>'}.join(" ").html_safe
+  end
 end

app/helpers/post_votes_helper.rb

@@ -1,14 +1,2 @@
 module PostVotesHelper
-  def pool_version_diff(current)
-    prev = PoolVersion.where(["pool_id = ? and id < ?", current.pool_id, current.id]).order("id desc").first
-
-    if prev.nil?
-      return current.post_id_array.map {|x| content_tag("ins", "+#{x}")}.join(" ").html_safe
-    end
-
-    added = current.post_id_array - prev.post_id_array
-    removed = prev.post_id_array - current.post_id_array
-
-    added.map {|x| '<ins>+<a href="/posts/' + x.to_s + '">' + x.to_s + '</a></ins>'}.join(" ") + removed.map {|x| '<del>&ndash;<a href="/posts/' + x.to_s + '">' + x.to_s + '</a></del>'}.join(" ")
-  end
 end

app/views/pool_versions/index.html.erb

@@ -2,7 +2,7 @@
   <div id="a-index">
     <h1>Pool History</h1>
     
-    <table width="100%">
+    <table width="100%" class="striped">
       <thead>
         <tr>
           <th>Pool</th>