diff --git a/lib/jquery.uls/src/jquery.uls.core.js b/lib/jquery.uls/src/jquery.uls.core.js
index 86615788..fcf489d6 100644
--- a/lib/jquery.uls/src/jquery.uls.core.js
+++ b/lib/jquery.uls/src/jquery.uls.core.js
@@ -119,6 +119,11 @@
 				top = this.top,
 				left = this.left;
 
+			if ( this.options.onPosition ) {
+				return this.options.onPosition.call( this );
+			}
+
+			// Default implementation (middle of the screen under the trigger)
 			if ( top === undefined ) {
 				pos = $.extend( {}, this.$element.offset(), {
 					height: this.$element[ 0 ].offsetHeight
@@ -380,9 +385,9 @@
 	};
 
 	$.fn.uls.defaults = {
-		// CSS top position for the dialog
+		// DEPRECATED: CSS top position for the dialog
 		top: undefined,
-		// CSS left position for the dialog
+		// DEPRECATED: CSS left position for the dialog
 		left: undefined,
 		// Callback function when user selects a language
 		onSelect: undefined,
@@ -392,6 +397,8 @@
 		onReady: undefined,
 		// Callback function when ULS dialog is shown
 		onVisible: undefined,
+		// Callback function when ULS dialog is ready to be shown
+		onPosition: undefined,
 		// Languages to be used for ULS, default is all languages
 		languages: $.uls.data.getAutonyms(),
 		// The options are wide (4 columns), medium (2 columns), and narrow (1 column).
diff --git a/lib/jquery.uls/src/jquery.uls.data.js b/lib/jquery.uls/src/jquery.uls.data.js
index 9d137ae2..de38e95c 100644
--- a/lib/jquery.uls/src/jquery.uls.data.js
+++ b/lib/jquery.uls/src/jquery.uls.data.js
@@ -1,7 +1,9 @@
-(function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
-module.exports=( function ( $ ) {
-	$.uls = $.uls || {};
-	$.uls.data = {
+( function () { function r( e, n, t ) { function o( i, f ) { if ( !n[ i ] ) { if ( !e[ i ] ) { var c = typeof require === 'function' && require; if ( !f && c ) { return c( i, !0 ); } if ( u ) { return u( i, !0 ); } var a = new Error( "Cannot find module '" + i + "'" ); throw a.code = 'MODULE_NOT_FOUND', a; } var p = n[ i ] = { exports: {} }; e[ i ][ 0 ].call( p.exports, function ( r ) { var n = e[ i ][ 1 ][ r ]; return o( n || r ); }, p, p.exports, r, e, n, t ); } return n[ i ].exports; } for ( var u = typeof require === 'function' && require, i = 0; i < t.length; i++ ) { o( t[ i ] ); } return o; } return r; }() )( {
+	1: [ function ( require, module, exports ) {
+		module.exports = ( function ( $ ) {
+			$.uls = $.uls || {};
+			$.uls.data =
+{
     "languages": {
         "aa": [
             "Latn",
@@ -6059,5 +6061,6 @@ module.exports=( function ( $ ) {
     }
 }
 
-} ( jQuery ) );
-},{}]},{},[1]);
+		}( jQuery ) );
+	}, {} ]
+}, {}, [ 1 ] );