diff --git a/ui/jquery.ui.tabs.js b/ui/jquery.ui.tabs.js
index 8b6d7232947..a934c0f218d 100644
--- a/ui/jquery.ui.tabs.js
+++ b/ui/jquery.ui.tabs.js
@@ -16,6 +16,14 @@
 var tabId = 0,
 	listId = 0;
 
+function getNextTabId() {
+	return ++tabId;
+}
+
+function getNextListId() {
+	return ++listId;
+}
+
 $.widget("ui.tabs", {
 	options: {
 		add: null,
@@ -56,7 +64,7 @@ $.widget("ui.tabs", {
 
 	_tabId: function(a) {
 		return a.title && a.title.replace(/\s/g, '_').replace(/[^A-Za-z0-9\-_:\.]/g, '') ||
-			this.options.idPrefix + (++tabId);
+			this.options.idPrefix + getNextTabId();
 	},
 
 	_sanitizeSelector: function(hash) {
@@ -64,7 +72,7 @@ $.widget("ui.tabs", {
 	},
 
 	_cookie: function() {
-		var cookie = this.cookie || (this.cookie = this.options.cookie.name || 'ui-tabs-' + (++listId));
+		var cookie = this.cookie || (this.cookie = this.options.cookie.name || 'ui-tabs-' + getNextListId());
 		return $.cookie.apply(null, [cookie].concat($.makeArray(arguments)));
 	},