Use data-aspect_id, because integer html ids freak me out.

app/views/aspects/_aspect_listings.haml

@@ -11,7 +11,7 @@
 
     %ul.sub_nav
       - for aspect in all_aspects
-        %li{:id => aspect.id, :class => ("active" if params["a_id"].to_i == aspect.id)}
+        %li{:data => {:aspect_id => aspect.id}, :class => ("active" if params["a_id"].to_i == aspect.id)}
           .edit
             = link_to image_tag("icons/pencil.svg", :height => 12), edit_aspect_path(aspect), :rel => "facebox"
 

public/javascripts/aspect-sorting.js

@@ -5,9 +5,9 @@
 
 $(document).ready(function() {
   $('#aspect_nav.left_nav .all_aspects .sub_nav').sortable({
-    items: 'li[id]',
+    items: "li[data-aspect_id]",
     update: function(event, ui) {
-      var order = $(this).sortable('toArray'),
+      var order = $(this).sortable("toArray", {attribute: "data-aspect_id"}),
           obj = { 'reorder_aspects': order, '_method': 'put' };
       $.ajax('/user', { type: 'post', dataType: 'script', data: obj });
     },