add id to thread links

templates/thread.html

@@ -49,8 +49,12 @@
 	{{ body }}
 	{% include 'report_delete.html' %}
 	</form>
-	<a href="{{ return }}">[{% trans %}Return{% endtrans %}]</a>
-        <a href="#" id="bottom" style="padding-left: 10px">[{% trans %}Go to top{% endtrans %}]</a>
+	
+	<span id="thread-links">
+		<a id="thread-return" href="{{ return }}">[{% trans %}Return{% endtrans %}]</a>
+    	<a id="thread-top" href="#" style="padding-left: 10px">[{% trans %}Go to top{% endtrans %}]</a>
+    	<a id="thread-catalog" style="padding-left: 10px" href="{{ config.root }}{{ board.dir }}{{ config.catalog_link }}">[{% trans %}Catalog{% endtrans %}]</a>
+    </span>
 
 	{{ boardlist.bottom }}