Dont push to browser history!

static/js/map.js

@@ -480,7 +480,7 @@ BusMap.Map = function(opts) {
             return;
         }
         that.hashChangedProgrammatically = true; // avoid infinite loop!
-        window.location = window.location.href.replace(window.location.hash, "#" + view);
+        window.location.replace(window.location.href.replace(window.location.hash, "#" + view));
     }