diff --git a/js/iD/id.js b/js/iD/id.js
index 8468694e6..f17a5eba7 100644
--- a/js/iD/id.js
+++ b/js/iD/id.js
@@ -60,9 +60,9 @@ var iD = function(container) {
                 encodeURIComponent(val) + '.jsonp?callback=grid';
         });
 
-    function grid(resp) {
-        map.setCentre(resp.results[0][0]);
-    }
+    window.grid = function(resp) {
+        map.setCenter([resp.results[0][0].lon, resp.results[0][0].lat]);
+    };
 
     bar.append('div')
         .attr('class', 'messages');
diff --git a/js/iD/renderer/Map.js b/js/iD/renderer/Map.js
index 24a14fdc3..84170deef 100644
--- a/js/iD/renderer/Map.js
+++ b/js/iD/renderer/Map.js
@@ -395,7 +395,7 @@ iD.Map = function(elem, connection) {
             var a = d3.event.translate,
                 b = translateStart;
             surface.style(transformProp,
-                'translate3d(' + (a[0] - b[0]) + 'px,' + (a[1] - b[1]) + 'px, 0px)');
+                'translate3d(' + ~~(a[0] - b[0]) + 'px,' + ~~(a[1] - b[1]) + 'px, 0px)');
         } else {
             redraw();
             translateStart = null;