diff --git a/core/modules/overlay/overlay-child.js b/core/modules/overlay/overlay-child.js
index be6df9b..be43628 100644
--- a/core/modules/overlay/overlay-child.js
+++ b/core/modules/overlay/overlay-child.js
@@ -142,7 +142,7 @@ Drupal.overlayChild.behaviors.loading = function (context, settings) {
 
   $(document).bind('drupalOverlayBeforeLoad.drupal-overlay.drupal-overlay-child-loading', function () {
     $title = $('#overlay-title').text(text);
-    var id = setInterval(function () {
+    setInterval(function () {
       dots = (dots.length > 10) ? '' : dots + '.';
       $title.text(text + dots);
     }, 500);
diff --git a/core/modules/overlay/overlay-parent.js b/core/modules/overlay/overlay-parent.js
index 3356580..a8a32d6 100644
--- a/core/modules/overlay/overlay-parent.js
+++ b/core/modules/overlay/overlay-parent.js
@@ -470,7 +470,6 @@ Drupal.overlay.eventhandlerAlterDisplacedElements = function (event) {
   });
   // Trigger a repaint.
   iframeBody.style.display = 'none';
-  var _tmp = iframeBody.offsetHeight;
   iframeBody.style.display = 'block';
 
   // Constrain the width of offsetting top and bottom elements, such as the
@@ -767,7 +766,7 @@ function refreshRegion(regionName, regionSelector) {
  *   corresponding to this region.
  */
 Drupal.overlay.refreshRegions = function (data) {
-  var region, region_info, regionClass, regionName, regionSelector;
+  var region, region_info, regionClass;
   for (region in data) {
     if (data.hasOwnProperty(region)) {
       region_info = data[region];