diff --git a/external/jquery-ui/accordion.js b/external/jquery-ui/accordion.js
diff --git a/external/jquery-ui/button.js b/external/jquery-ui/button.js
@@ -114,9 +114,8 @@ $.widget( "ui.button", {
 
 	_updateTooltip: function() {
 		this.title = this.element.attr( "title" );
-		this.noTitle = !this.title;
 
-		if ( !this.options.showLabel && !this.noTitle ){
+		if ( !this.options.showLabel && !this.title ){
 			this.element.attr( "title", this.options.label );
 		}
 	},

diff --git a/external/jquery-ui/checkboxradio.js b/external/jquery-ui/checkboxradio.js
@@ -24,10 +24,9 @@
 	}
 }(function( $ ) {
 
-var baseClasses = "ui-button ui-widget ui-corner-all",
-	typeClasses = " ui-icon ui-icon-background ui-state-focus ui-icon-check ui-icon-blank" +
-		" ui-radio-label ui-checkbox-label ui-state-active ui-icon-beginning ui-icon-end" +
-		" ui-icon-top ui-icon-bottom ui-radio-checked ui-checkbox-checked",
+var baseClasses = "ui-button ui-widget",
+	typeClasses = "ui-state-focus ui-radio-label ui-checkbox-label ui-state-active " +
+	"ui-icon-beginning ui-icon-end ui-icon-top ui-icon-bottom ui-radio-checked ui-checkbox-checked",
 	formResetHandler = function() {
 		var form = $( this );
 		setTimeout(function() {
@@ -104,11 +103,11 @@ $.widget( "ui.checkboxradio", {
 		var formElement = $( this.element[ 0 ].form );
 
 		// We don't use _on and _off here because we want all the checkboxes in the same form to use
-		// single handler which handles all the checkboxradio widgets in the form
+		// a single handler which handles all the checkboxradio widgets in the form
 		formElement.off( "reset" + this.eventNamespace, formResetHandler );
 		formElement.on( "reset" + this.eventNamespace, formResetHandler );
 
-		// If it is null the user set it explicitly to null so we need to check the dom
+		// If it is null the user set it explicitly to null so we need to check the DOM
 		if ( this.options.disabled == null ) {
 			this.options.disabled = this.element.prop( "disabled" ) || false;
 		}
@@ -137,7 +136,7 @@ $.widget( "ui.checkboxradio", {
 	_readType: function() {
 		this.type = this.element[ 0 ].type;
 		if ( !/radio|checkbox/.test( this.type ) ) {
-			throw new Error( "Can't create checkboxradio widget for type " + this.type );
+			$.error( "Can't create checkboxradio widget for type " + this.type );
 		}
 	},
 
@@ -218,7 +217,8 @@ $.widget( "ui.checkboxradio", {
 	},
 
 	_destroy: function() {
-		this.label.removeClass( baseClasses + " " + typeClasses );
+		this.label.removeClass( this._classes( "ui-radio-label ui-checkbox-label" ) + " " +
+			baseClasses + " " + typeClasses );
 		if ( this.icon ) {
 			this.icon.remove();
 		}

diff --git a/external/jquery-ui/core.js b/external/jquery-ui/core.js
@@ -209,22 +209,6 @@ if ( $( "<a>" ).data( "a-b", "a" ).removeData( "a-b" ).data( "a-b" ) ) {
 $.ui.ie = !!/msie [\w.]+/.exec( navigator.userAgent.toLowerCase() );
 
 $.fn.extend({
-	focus: (function( orig ) {
-		return function( delay, fn ) {
-			return typeof delay === "number" ?
-				this.each(function() {
-					var elem = this;
-					setTimeout(function() {
-						$( elem ).focus();
-						if ( fn ) {
-							fn.call( elem );
-						}
-					}, delay );
-				}) :
-				orig.apply( this, arguments );
-		};
-	})( $.fn.focus ),
-
 	disableSelection: (function() {
 		var eventType = "onselectstart" in document.createElement( "div" ) ?
 			"selectstart" :
@@ -239,35 +223,6 @@ $.fn.extend({
 
 	enableSelection: function() {
 		return this.unbind( ".ui-disableSelection" );
-	},
-
-	zIndex: function( zIndex ) {
-		if ( zIndex !== undefined ) {
-			return this.css( "zIndex", zIndex );
-		}
-
-		if ( this.length ) {
-			var elem = $( this[ 0 ] ), position, value;
-			while ( elem.length && elem[ 0 ] !== document ) {
-				// Ignore z-index if position is set to a value where z-index is ignored by the browser
-				// This makes behavior of this function consistent across browsers
-				// WebKit always returns auto if the element is positioned
-				position = elem.css( "position" );
-				if ( position === "absolute" || position === "relative" || position === "fixed" ) {
-					// IE returns 0 when zIndex is not specified
-					// other browsers return a string
-					// we ignore the case of nested elements with an explicit value of 0
-					// <div style="z-index: -10;"><div style="z-index: 0;"></div></div>
-					value = parseInt( elem.css( "zIndex" ), 10 );
-					if ( !isNaN( value ) && value !== 0 ) {
-						return value;
-					}
-				}
-				elem = elem.parent();
-			}
-		}
-
-		return 0;
 	}
 });
 

diff --git a/external/jquery-ui/tabs.js b/external/jquery-ui/tabs.js
@@ -58,10 +58,6 @@ return $.widget( "ui.tabs", {
 		return function( anchor ) {
 			var anchorUrl, locationUrl;
 
-			// support: IE7
-			// IE7 doesn't normalize the href property when set via script (#9317)
-			anchor = anchor.cloneNode( false );
-
 			anchorUrl = anchor.href.replace( rhash, "" );
 			locationUrl = location.href.replace( rhash, "" );
 
@@ -276,30 +272,29 @@ return $.widget( "ui.tabs", {
 	},
 
 	_elementsFromClassKey: function( classKey ) {
-		switch( classKey ) {
-			case "ui-tabs":
-				return this.element;
+		switch ( classKey ) {
 			case "ui-tabs-collapsible":
-				if ( this.options.collapsible ) {
-					return this.element;
+				if ( !this.options.collapsible ) {
+					return $();
 				}
+				break;
 			case "ui-tabs-active":
 				return this.active;
 			case "ui-tabs-nav":
 				return this.tablist;
-			case "ui-tab"
+			case "ui-tab":
 				return this.tabs;
 			case "ui-tabs-anchor":
 				return this.anchors;
 			case "ui-tabs-panel":
 				return this.panels;
 			case "ui-tabs-loading":
-				if( this.tab.hasClass( classKey ) ) {
+				if ( this.tab.hasClass( classKey ) ) {
 					return this.tab;
 				}
-			default:
-				return this._superApply( arguments );
+				return $();
 		}
+		return this._superApply( arguments );
 	},
 
 	_setOption: function( key, value ) {

diff --git a/external/jquery-ui/widget.js b/external/jquery-ui/widget.js
@@ -254,10 +254,6 @@ $.Widget.prototype = {
 		this.element = $( element );
 		this.uuid = widget_uuid++;
 		this.eventNamespace = "." + this.widgetName + this.uuid;
-		this.options = $.widget.extend( {},
-			this.options,
-			this._getCreateOptions(),
-			options );
 
 		this.bindings = $();
 		this.hoverable = $();
@@ -280,6 +276,11 @@ $.Widget.prototype = {
 			this.window = $( this.document[0].defaultView || this.document[0].parentWindow );
 		}
 
+		this.options = $.widget.extend( {},
+			this.options,
+			this._getCreateOptions(),
+			options );
+
 		this._create();
 		this._trigger( "create", null, this._getCreateEventData() );
 		this._init();
@@ -356,6 +357,7 @@ $.Widget.prototype = {
 
 		return this;
 	},
+
 	_setOptions: function( options ) {
 		var key;
 
@@ -365,14 +367,18 @@ $.Widget.prototype = {
 
 		return this;
 	},
+
 	_elementsFromClassKey: function( classKey ) {
-		return $();
+		if ( this.options.classes[ classKey ] ) {
+			return this.element;
+		} else {
+			return $();
+		}
 	},
-	_setOption: function( key, value ) {
-		var classKey;
 
+	_setOption: function( key, value ) {
 		if ( key === "classes" ) {
-			for ( classKey in value ) {
+			for ( var classKey in value ) {
 				if ( value[ classKey ] !== this.options.classes[ classKey ] ) {
 					this._elementsFromClassKey( classKey )
 						.removeClass( this._classesFromObject( classKey, this.options.classes ) )

diff --git a/js/index.php b/js/index.php
@@ -58,6 +58,7 @@
 	'widgets/listview.hidedividers.js',
 	'nojs.js',
 	'widgets/forms/reset.js',
+	'../external/jquery-ui/accordion.js',
 	'../external/jquery-ui/checkboxradio.js',
 	'../external/jquery-ui/button.js',
 	'widgets/forms/button.js',

diff --git a/js/jquery.mobile.js b/js/jquery.mobile.js
@@ -25,6 +25,7 @@ define([
 	"./widgets/listview.autodividers",
 	"./widgets/listview.hidedividers",
 	"./nojs",
+	"./jquery-ui/accordion",
 	"./jquery-ui/checkboxradio",
 	"./jquery-ui/button",
 	"./widgets/forms/slider",