very rough add, allows rough comparison

static/report/compare.html

@@ -142,8 +142,9 @@
           } );
 
           $('window').on('hashchange', route_add);
-          $('#menu').on('click', 'A', route_add);
+          $('#menu').on('click', 'A.add-button', route_add);
           function route_add (ev) {
+            pools.add_new( );
             console.log('Add', ev.target, arguments);
           }
           var compare = { toolbar: toolbar, timeline: timeline, control: control};

static/report/js/compare.js

@@ -171,6 +171,12 @@ function manager (view, data, opts) {
     }
   }
 
+  function add_new ( ) {
+    var item = make({ });
+    pools.push(item);
+  }
+
+  manage.add_new = add_new;
 
   return init( );
 }