diff --git a/app/views/posts/index.html.erb b/app/views/posts/index.html.erb
index 5aa6f0585..df35d72d6 100644
--- a/app/views/posts/index.html.erb
+++ b/app/views/posts/index.html.erb
@@ -1,7 +1,7 @@
 <div id="c-posts">
   <div id="a-index">
     <aside id="sidebar">
-      <%= render "posts/partials/common/search", :path => posts_path, :tags => params[:tags] %>
+      <%= render "posts/partials/common/search", :path => posts_path, :tags => params[:tags], :tags_dom_id => "tags" %>
 
       <%= render "posts/partials/index/mode_menu" %>
 
@@ -36,7 +36,7 @@
     </section>
     
     <section id="responsive-tag-list">
-      <%= render "posts/partials/common/search", :path => posts_path, :tags => params[:tags] %>
+      <%= render "posts/partials/common/search", :path => posts_path, :tags => params[:tags], :tags_dom_id => "responsive-tags" %>
       <%= @post_set.presenter.tag_list_html(self) %>
     </section>
 
diff --git a/app/views/posts/partials/common/_search.html.erb b/app/views/posts/partials/common/_search.html.erb
index 604e43d21..e06448006 100644
--- a/app/views/posts/partials/common/_search.html.erb
+++ b/app/views/posts/partials/common/_search.html.erb
@@ -6,7 +6,7 @@
 <section id="search-box">
   <h1>Search</h1>
   <%= form_tag(path, :method => "get") do %>
-    <%= text_field_tag("tags", tags, :size => 20) %>
+    <%= text_field_tag("tags", tags, :size => 20, :id => tags_dom_id) %>
     <% if params[:raw] %>
       <%= hidden_field_tag :raw, params[:raw] %>
     <% end %>
diff --git a/app/views/posts/show.html.erb b/app/views/posts/show.html.erb
index 6ad7f8877..d8253e875 100644
--- a/app/views/posts/show.html.erb
+++ b/app/views/posts/show.html.erb
@@ -1,7 +1,7 @@
 <div id="c-posts">
   <div id="a-show">
     <aside id="sidebar">
-      <%= render "posts/partials/common/search", :path => posts_path, :tags => params[:tags] %>
+      <%= render "posts/partials/common/search", :path => posts_path, :tags => params[:tags], :tags_dom_id => "tags" %>
 
       <%= render "posts/partials/index/blacklist" %>
 
@@ -89,7 +89,7 @@
       </menu>
 
       <section id="responsive-tag-list">
-        <%= render "posts/partials/common/search", :path => posts_path, :tags => params[:tags] %>
+        <%= render "posts/partials/common/search", :path => posts_path, :tags => params[:tags], :tags_dom_id => "responsive-tags" %>
         <%= @post.presenter.split_tag_list_html(self) %>
       </section>