diff --git misc/autocomplete.js misc/autocomplete.js
index 5e85be4..f595641 100644
--- misc/autocomplete.js
+++ misc/autocomplete.js
@@ -20,6 +20,28 @@ Drupal.behaviors.autocomplete = {
         .append($('<span class="element-invisible" aria-live="assertive"></span>')
           .attr('id', $input.attr('id') + '-autocomplete-aria-live')
         );
+
+      var $inputHeight = $input.innerHeight();
+      // Get hidden element inner height.
+      if ($inputHeight == 0) {
+        var copiedElement = $input.clone()
+          .attr("id", false)
+          .css({visibility:"hidden", display:"block", position:"absolute"});
+
+        $("body").append(copiedElement);
+        $inputHeight = copiedElement.innerHeight();
+        copiedElement.remove();
+      }
+      // Calculated background posotion.
+      var $PosX = ($('html').attr('dir') == 'rtl') ? '1% ' : '100% ';
+      var $inputBgPos = $PosX + ($inputHeight / 2 - 6.5) + 'px';
+      var $inputBgPosHover = $PosX + ($inputHeight / 2 - 137) + 'px';
+
+      // Store inner height into DOM.
+      jQuery.data(document.body, $input[0].id + 'innerHeight', {inputBgPos: $inputBgPos, inputBgPosHover: $inputBgPosHover});
+
+      $input.css('background-position', $inputBgPos); 
+
       new Drupal.jsAC($input, acdb[uri]);
     });
   }
@@ -239,15 +261,18 @@ Drupal.jsAC.prototype.found = function (matches) {
 };
 
 Drupal.jsAC.prototype.setStatus = function (status) {
+  var $innerHeight = jQuery.data(document.body, $(this.input)[0].id + 'innerHeight');
   switch (status) {
     case 'begin':
-      $(this.input).addClass('throbbing');
+      $(this.input).addClass('throbbing')
+        .css('background-position', $innerHeight.inputBgPosHover);
       $(this.ariaLive).html(Drupal.t('Searching for matches...'));
       break;
     case 'cancel':
     case 'error':
     case 'found':
-      $(this.input).removeClass('throbbing');
+      $(this.input).removeClass('throbbing')
+        .css('background-position', $innerHeight.inputBgPos);
       break;
   }
 };
diff --git misc/throbber.gif misc/throbber.gif
index 4352e64e859bb5e4d2e438f00d9d34c1d27462d1..1455394fd1ada97307d2854263f38c6f777c49be 100644
GIT binary patch
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diff --git modules/system/system.base-rtl.css modules/system/system.base-rtl.css
index 9099c9d..0eed0bd 100644
--- modules/system/system.base-rtl.css
+++ modules/system/system.base-rtl.css
@@ -5,17 +5,6 @@
  */
 
 /**
- * Autocomplete.
- */
-/* Animated throbber */
-html.js input.form-autocomplete {
-  background-position: 0% 2px;
-}
-html.js input.throbbing {
-  background-position: 0% -18px;
-}
-
-/**
  * Progress bar.
  */
 .progress .percentage {
diff --git modules/system/system.base.css modules/system/system.base.css
index a6748de..fce2fd0 100644
--- modules/system/system.base.css
+++ modules/system/system.base.css
@@ -31,12 +31,8 @@
 /* Animated throbber */
 html.js input.form-autocomplete {
   background-image: url(../../misc/throbber.gif);
-  background-position: 100% 2px; /* LTR */
   background-repeat: no-repeat;
 }
-html.js input.throbbing {
-  background-position: 100% -18px; /* LTR */
-}
 
 /**
  * Collapsible fieldsets.
diff --git themes/bartik/css/style-rtl.css themes/bartik/css/style-rtl.css
index d25006f..04f4c82 100644
--- themes/bartik/css/style-rtl.css
+++ themes/bartik/css/style-rtl.css
@@ -218,14 +218,6 @@ ul.action-links li a {
   margin-left: 0;
 }
 
-/* Animated throbber */
-html.js input.form-autocomplete {
-  background-position: 1% 4px;
-}
-html.js input.throbbing {
-  background-position: 1% -16px;
-}
-
 /* Comment form */
 .comment-form label {
   float: right;
diff --git themes/bartik/css/style.css themes/bartik/css/style.css
index 75e43b0..bb0f9c0 100644
--- themes/bartik/css/style.css
+++ themes/bartik/css/style.css
@@ -1329,14 +1329,6 @@ input.form-button-disabled:active,
   color: #717171;
 }
 
-/* Animated throbber */
-html.js input.form-autocomplete {
-  background-position: 100% 4px; /* LTR */
-}
-html.js input.throbbing {
-  background-position: 100% -16px; /* LTR */
-}
-
 /* Comment form */
 .comment-form label {
   float: left; /* LTR */
diff --git themes/seven/style.css themes/seven/style.css
index 66303c5..49b6b03 100644
--- themes/seven/style.css
+++ themes/seven/style.css
@@ -699,12 +699,6 @@ select.form-select:focus {
   color: #000;
   border-color: #ace;
 }
-html.js input.form-autocomplete {
-  background-position: 100% 4px;
-}
-html.js input.throbbing {
-  background-position: 100% -16px;
-}
 ul.action-links {
   margin: 1em 0;
   padding: 0 20px 0 20px;