Index: /src/django_gheat/wlheatmap/static/heatmap.js
===================================================================
--- /src/django_gheat/wlheatmap/static/heatmap.js	(revision 9782)
+++ /src/django_gheat/wlheatmap/static/heatmap.js	(revision 9811)
@@ -62,7 +62,20 @@
                   }
               }
+              // Update permalink URL to reflect new location and filters
+              layerid = 0;
+              for (var i=1, len=layers.length; i < len; i++) {
+                var layer = layers[i];
+                if ($.isArray(layer.url)) {
+                  var url = layer.url[0];
+                } else {
+                  var url = layer.url;
+                }
+                var filter = url.split('?')[1];
+                layerid += 1;
+                params['layername' + i] = layer.name;
+                params['layerfilter' + i] = filter;
+              }
+	      params['layercount']  = layerid;
           }
-          //XXX: Hack custom filters in here
-          params.customParam = "foo";
           return params;
         }