diff --git a/CampusAppWP8/CampusAppWP8/App.xaml.cs b/CampusAppWP8/CampusAppWP8/App.xaml.cs
index ac1bc700..d6d91181 100644
--- a/CampusAppWP8/CampusAppWP8/App.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/App.xaml.cs
@@ -140,6 +140,15 @@ namespace CampusAppWP8
         /// </summary>
         private void LoadSettings()
         {
+            if (Debugger.IsAttached)
+            {
+                Settings.AppSetting.DevMode = true;
+            }
+            else
+            {
+                Settings.AppSetting.DevMode = false;
+            }
+
             this.UserSettingsLoaded();
             if (Settings.AppSetting.GeoWatchEnable)
             {
diff --git a/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeed.cs b/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeed.cs
index b162e5d6..a4c33940 100644
--- a/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeed.cs
+++ b/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeed.cs
@@ -34,6 +34,14 @@ namespace CampusAppWP8.Feed.Mensa
 
         #endregion
 
+        #region Property
+
+        /// <summary>Gets or sets the title.</summary>
+        /// <value>The title.</value>
+        public string Title { get; protected set; }
+
+        #endregion
+
         #region Method
 
         #region public
diff --git a/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedCBMain.cs b/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedCBMain.cs
index b8b1743c..682d33a6 100644
--- a/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedCBMain.cs
+++ b/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedCBMain.cs
@@ -20,6 +20,7 @@ namespace CampusAppWP8.Feed.Mensa
         public MensaFeedCBMain()
             : base(Constants.FileMensa_Shedule_CBMain, Constants.UrlMensa_Week_CBMain)
         {
+            this.Title = AppResources.Campus_CBMain;
         }
     }
 }
diff --git a/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedCBNorth.cs b/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedCBNorth.cs
index 29aaddff..6edfe0c6 100644
--- a/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedCBNorth.cs
+++ b/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedCBNorth.cs
@@ -20,6 +20,7 @@ namespace CampusAppWP8.Feed.Mensa
         public MensaFeedCBNorth()
             : base(Constants.FileMensa_Shedule_CBNorth, Constants.UrlMensa_Week_CBNorth)
         {
+            this.Title = AppResources.Campus_CBNorth;
         }
     }
 }
diff --git a/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedCBSouth.cs b/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedCBSouth.cs
index 05a03dbc..46796322 100644
--- a/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedCBSouth.cs
+++ b/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedCBSouth.cs
@@ -20,6 +20,7 @@ namespace CampusAppWP8.Feed.Mensa
         public MensaFeedCBSouth()
             : base(Constants.FileMensa_Shedule_CBSouth, Constants.UrlMensa_Week_CBSouth)
         {
+            this.Title = AppResources.Campus_CBSouth;
         }
     }
 }
diff --git a/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedSBFMain.cs b/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedSBFMain.cs
index 0f2f157a..e524160f 100644
--- a/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedSBFMain.cs
+++ b/CampusAppWP8/CampusAppWP8/Feed/Mensa/MensaFeedSBFMain.cs
@@ -20,6 +20,7 @@ namespace CampusAppWP8.Feed.Mensa
         public MensaFeedSBFMain()
             : base(Constants.FileMensa_Shedule_SBFMain, Constants.UrlMensa_Week_SBFMain)
         {
+            this.Title = AppResources.Campus_SFBMain;
         }
     }
 }
diff --git a/CampusAppWP8/CampusAppWP8/Model/Setting/AppSettings.cs b/CampusAppWP8/CampusAppWP8/Model/Setting/AppSettings.cs
index 7c7e2df1..5f9d0e92 100644
--- a/CampusAppWP8/CampusAppWP8/Model/Setting/AppSettings.cs
+++ b/CampusAppWP8/CampusAppWP8/Model/Setting/AppSettings.cs
@@ -46,5 +46,20 @@ namespace CampusAppWP8.Model.Setting
                 App.SaveToAppState<bool>(Constants.AppSetting_InitApp, value);
             }
         }
+
+        /// <summary>Gets or sets a value indicating whether the development mode.</summary>
+        /// <value>true if development mode, false if not.</value>
+        public bool DevMode
+        {
+            get
+            {
+                return App.LoadFromAppState<bool>(Constants.AppSetting_DevMode);
+            }
+
+            set
+            {
+                App.SaveToAppState<bool>(Constants.AppSetting_DevMode, value);
+            }
+        }
     }
 }
\ No newline at end of file
diff --git a/CampusAppWP8/CampusAppWP8/Model/Utility/CampusListPickerItemListModel.cs b/CampusAppWP8/CampusAppWP8/Model/Utility/CampusListPickerItemListModel.cs
index 88ea0d39..c7a826da 100644
--- a/CampusAppWP8/CampusAppWP8/Model/Utility/CampusListPickerItemListModel.cs
+++ b/CampusAppWP8/CampusAppWP8/Model/Utility/CampusListPickerItemListModel.cs
@@ -16,7 +16,7 @@ namespace CampusAppWP8.Model.Utility
         #region Constructor
 
         /// <summary>
-        /// Initializes a new instance of the <see cref="DegreeListPickerItemListModel" /> class.
+        /// Initializes a new instance of the <see cref="CampusListPickerItemListModel" /> class.
         /// </summary>
         public CampusListPickerItemListModel()
             : base()
diff --git a/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml b/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml
index b663f264..2cbda005 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml
+++ b/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml
@@ -59,8 +59,13 @@
         <!-- <Image Source="/Assets/AlignmentGrid.png" VerticalAlignment="Top" Height="800" Width="480" Margin="0,-32,0,0" Grid.Row="0" Grid.RowSpan="2" IsHitTestVisible="False" /> -->
     </Grid>
     <phone:PhoneApplicationPage.ApplicationBar>
-        <shell:ApplicationBar IsVisible="True" IsMenuEnabled="False" Mode="Minimized" >
+        <shell:ApplicationBar IsVisible="True" IsMenuEnabled="True" Mode="Minimized" >
             <lui:UpdateButtonAppBar Click="MensaForceUpdate_Click"/>
+            <shell:ApplicationBar.MenuItems>
+                <shell:ApplicationBarMenuItem Text="Campus1" Click="ApplicationBarMenuItem_Click"/>
+                <shell:ApplicationBarMenuItem Text="Campus2" Click="ApplicationBarMenuItem2_Click"/>
+                <shell:ApplicationBarMenuItem Text="Campus3" Click="ApplicationBarMenuItem3_Click"/>
+            </shell:ApplicationBar.MenuItems>
         </shell:ApplicationBar>
     </phone:PhoneApplicationPage.ApplicationBar>
 </phone:PhoneApplicationPage>
\ No newline at end of file
diff --git a/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml.cs b/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml.cs
index 4f85b351..caf02add 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/Pages/Mensa/MensaPage.xaml.cs
@@ -8,6 +8,7 @@
 namespace CampusAppWP8.Pages.Mensa
 {
     using System;
+    using System.Threading;
     using System.Windows;
     using System.Windows.Navigation;
     using CampusAppWP8.Feed.GeoApi;
@@ -15,7 +16,7 @@ namespace CampusAppWP8.Pages.Mensa
     using CampusAppWP8.Resources;
     using CampusAppWP8.Utility.Lui.MessageBoxes;
     using Microsoft.Phone.Controls;
-    using System.Threading;
+    using Microsoft.Phone.Shell;
 
     /// <summary>
     /// Class for the MensaPage
@@ -64,6 +65,24 @@ namespace CampusAppWP8.Pages.Mensa
         public MensaPage()
         {
             this.InitializeComponent();
+            ApplicationBarMenuItem menuItem1 = ApplicationBar.MenuItems[0] as ApplicationBarMenuItem;
+            ApplicationBarMenuItem menuItem2 = ApplicationBar.MenuItems[1] as ApplicationBarMenuItem;
+            ApplicationBarMenuItem menuItem3 = ApplicationBar.MenuItems[2] as ApplicationBarMenuItem;
+
+            if (menuItem1 != null)
+            {
+                menuItem1.Text = AppResources.Campus_CBMain;
+            }
+
+            if (menuItem2 != null)
+            {
+                menuItem2.Text = AppResources.Campus_CBSouth;
+            }
+
+            if (menuItem3 != null)
+            {
+                menuItem3.Text = AppResources.Campus_SFBMain;
+            }
         }
 
         #endregion
@@ -89,10 +108,14 @@ namespace CampusAppWP8.Pages.Mensa
         /// <param name="e">Arguments of navigation</param>
         protected override void OnNavigatedFrom(NavigationEventArgs e)
         {
-            this.feed.SaveData(this.refreshed);
+            if (this.feed != null)
+            {
+                this.feed.SaveData(this.refreshed);
+            }
         }
 
         #endregion
+
         #region private
 
         /// <summary>
@@ -115,8 +138,11 @@ namespace CampusAppWP8.Pages.Mensa
         /// </summary>
         private void SpsApiIsFail()
         {
-            MessageBoxResult result = MessageBoxes.ShowMainModelErrorMessageBox(AppResources.MsgBox_ErrorCampusLoc);
-            this.InitializeFeed(Settings.UserProfil.DefaultCampus);
+            if (this.Dispatcher != null)
+            {
+                this.Dispatcher.BeginInvoke(new Action(() => MessageBoxes.ShowMainModelErrorMessageBox(AppResources.MsgBox_ErrorCampusLoc)));
+                this.Dispatcher.BeginInvoke(new Action(() => this.InitializeFeed(Settings.UserProfil.DefaultCampus)));
+            }
         }
 
         /// <summary>
@@ -161,7 +187,7 @@ namespace CampusAppWP8.Pages.Mensa
         {
             if (Settings.AppSetting.GeoWatchEnable)
             {
-                Thread thread = new Thread(new ThreadStart( this.DeterminCurrentCampusAndLoadFeed));
+                Thread thread = new Thread(new ThreadStart(this.DeterminCurrentCampusAndLoadFeed));
                 thread.Start();
             }
             else
@@ -202,6 +228,7 @@ namespace CampusAppWP8.Pages.Mensa
         /// </summary>
         private void SetupMensaPivot()
         {
+            this.MensaPivot.Title = AppResources.MensaApp_Title + " (" + this.feed.Title + ")";
             this.MensaPivot.ItemsSource = this.feed.Model.Menus;
             this.MensaPivot.SelectedIndex = this.selectedIndex;
         }
@@ -252,6 +279,36 @@ namespace CampusAppWP8.Pages.Mensa
             this.refreshed = true;
         }
 
+        /// <summary>Event handler. Called by ApplicationBarMenuItem for click events.</summary>
+        /// <remarks>Stubbfel, 26.08.2013.</remarks>
+        /// <param name="sender">button object.</param>
+        /// <param name="e">     Event information.</param>
+        private void ApplicationBarMenuItem_Click(object sender, EventArgs e)
+        {
+            this.ProgressBar.Visibility = System.Windows.Visibility.Visible;
+            this.InitializeFeed(CampusAppWP8.Model.Setting.UserProfilModel.Campus.CB_MAIN);
+        }
+
+        /// <summary>Event handler. Called by ApplicationBarMenuItem2 for click events.</summary>
+        /// <remarks>Stubbfel, 26.08.2013.</remarks>
+        /// <param name="sender">button object.</param>
+        /// <param name="e">     Event information.</param>
+        private void ApplicationBarMenuItem2_Click(object sender, EventArgs e)
+        {
+            this.ProgressBar.Visibility = System.Windows.Visibility.Visible;
+            this.InitializeFeed(CampusAppWP8.Model.Setting.UserProfilModel.Campus.CB_SOUTH);
+        }
+
+        /// <summary>Event handler. Called by ApplicationBarMenuItem3 for click events.</summary>
+        /// <remarks>Stubbfel, 26.08.2013.</remarks>
+        /// <param name="sender">button object.</param>
+        /// <param name="e">     Event information.</param>
+        private void ApplicationBarMenuItem3_Click(object sender, EventArgs e)
+        {
+            this.ProgressBar.Visibility = System.Windows.Visibility.Visible;
+            this.InitializeFeed(CampusAppWP8.Model.Setting.UserProfilModel.Campus.SFB_MAIN);
+        }
+
         #endregion
 
         #endregion
diff --git a/CampusAppWP8/CampusAppWP8/Pages/StartPage.xaml.cs b/CampusAppWP8/CampusAppWP8/Pages/StartPage.xaml.cs
index 4bbdc8da..33bc484c 100644
--- a/CampusAppWP8/CampusAppWP8/Pages/StartPage.xaml.cs
+++ b/CampusAppWP8/CampusAppWP8/Pages/StartPage.xaml.cs
@@ -44,14 +44,22 @@ namespace CampusAppWP8.Pages
                 menuItem2.Text = AppResources.Setting_ApplAppBarTitle;
             }
 
-            if (menuItem3 != null)
+            if (Settings.AppSetting.DevMode)
             {
-                menuItem3.Text = "Nfc";
-            }
+                if (menuItem3 != null)
+                {
+                    menuItem3.Text = "Nfc";
+                }
 
-            if (menuItem4 != null)
+                if (menuItem4 != null)
+                {
+                    menuItem4.Text = "QR-Reader";
+                }
+            }
+            else
             {
-                menuItem4.Text = "QR-Reader";
+                ApplicationBar.MenuItems.RemoveAt(ApplicationBar.MenuItems.Count - 1);
+                ApplicationBar.MenuItems.RemoveAt(ApplicationBar.MenuItems.Count - 1);
             }
 
             if (!Settings.AppSetting.InitApp)
diff --git a/CampusAppWP8/CampusAppWP8/Resources/Constants.Designer.cs b/CampusAppWP8/CampusAppWP8/Resources/Constants.Designer.cs
index ad0aba17..038352db 100644
--- a/CampusAppWP8/CampusAppWP8/Resources/Constants.Designer.cs
+++ b/CampusAppWP8/CampusAppWP8/Resources/Constants.Designer.cs
@@ -60,6 +60,15 @@ namespace CampusAppWP8.Resources {
             }
         }
         
+        /// <summary>
+        ///   Sucht eine lokalisierte Zeichenfolge, die DevMode ähnelt.
+        /// </summary>
+        public static string AppSetting_DevMode {
+            get {
+                return ResourceManager.GetString("AppSetting_DevMode", resourceCulture);
+            }
+        }
+        
         /// <summary>
         ///   Sucht eine lokalisierte Zeichenfolge, die AppSetting.GeoWatchEnable ähnelt.
         /// </summary>
@@ -790,16 +799,7 @@ namespace CampusAppWP8.Resources {
         }
         
         /// <summary>
-        ///   Sucht eine lokalisierte Zeichenfolge, die http://www.tu-cottbus.de/campusapp-data/Studentenwerk/index.php?mensa=CottbusBTU&amp;v=1 ähnelt.
-        /// </summary>
-        public static string UrlMensa_Week {
-            get {
-                return ResourceManager.GetString("UrlMensa_Week", resourceCulture);
-            }
-        }
-        
-        /// <summary>
-        ///   Sucht eine lokalisierte Zeichenfolge, die http://www.tu-cottbus.de/campusapp-data/Studentenwerk/index.php?mensa=CottbusBTU&amp;v=1 ähnelt.
+        ///   Sucht eine lokalisierte Zeichenfolge, die http://www.studentenwerk-frankfurt.de/2011/ClassPackage/App_IKMZ_BTU/index.php?mensa=CottbusBTU&amp;v=1 ähnelt.
         /// </summary>
         public static string UrlMensa_Week_CBMain {
             get {
@@ -808,7 +808,7 @@ namespace CampusAppWP8.Resources {
         }
         
         /// <summary>
-        ///   Sucht eine lokalisierte Zeichenfolge, die http://www.tu-cottbus.de/campusapp-data/Studentenwerk/index.php?mensa=CottbusBTU&amp;v=1 ähnelt.
+        ///   Sucht eine lokalisierte Zeichenfolge, die http://www.studentenwerk-frankfurt.de/2011/ClassPackage/App_IKMZ_BTU/index.php?mensa=CottbusBTU&amp;v=1 ähnelt.
         /// </summary>
         public static string UrlMensa_Week_CBNorth {
             get {
@@ -817,7 +817,7 @@ namespace CampusAppWP8.Resources {
         }
         
         /// <summary>
-        ///   Sucht eine lokalisierte Zeichenfolge, die http://www.tu-cottbus.de/campusapp-data/Studentenwerk/index.php?mensa=CottbusHL&amp;v=1 ähnelt.
+        ///   Sucht eine lokalisierte Zeichenfolge, die http://www.studentenwerk-frankfurt.de/2011/ClassPackage/App_IKMZ_BTU/index.php?mensa=CottbusHL&amp;v=1 ähnelt.
         /// </summary>
         public static string UrlMensa_Week_CBSouth {
             get {
@@ -826,7 +826,7 @@ namespace CampusAppWP8.Resources {
         }
         
         /// <summary>
-        ///   Sucht eine lokalisierte Zeichenfolge, die http://www.tu-cottbus.de/campusapp-data/Studentenwerk/index.php?mensa=Senftenberg&amp;v=1 ähnelt.
+        ///   Sucht eine lokalisierte Zeichenfolge, die http://www.studentenwerk-frankfurt.de/2011/ClassPackage/App_IKMZ_BTU/index.php?mensa=Senftenberg&amp;v=1 ähnelt.
         /// </summary>
         public static string UrlMensa_Week_SBFMain {
             get {
diff --git a/CampusAppWP8/CampusAppWP8/Resources/Constants.resx b/CampusAppWP8/CampusAppWP8/Resources/Constants.resx
index d6ba8703..d80c68d3 100644
--- a/CampusAppWP8/CampusAppWP8/Resources/Constants.resx
+++ b/CampusAppWP8/CampusAppWP8/Resources/Constants.resx
@@ -255,9 +255,6 @@
   <data name="FileEvents_Name" xml:space="preserve">
     <value>EventsFeed.xml</value>
   </data>
-  <data name="UrlMensa_Week" xml:space="preserve">
-    <value>http://www.tu-cottbus.de/campusapp-data/Studentenwerk/index.php?mensa=CottbusBTU&amp;v=1</value>
-  </data>
   <data name="FileOpeningHours_OpeningHours" xml:space="preserve">
     <value>OpeninghoursFeed.xml</value>
   </data>
@@ -382,16 +379,16 @@
     <value>MensaFeed_SFBMain.xml</value>
   </data>
   <data name="UrlMensa_Week_CBMain" xml:space="preserve">
-    <value>http://www.tu-cottbus.de/campusapp-data/Studentenwerk/index.php?mensa=CottbusBTU&amp;v=1</value>
+    <value>http://www.studentenwerk-frankfurt.de/2011/ClassPackage/App_IKMZ_BTU/index.php?mensa=CottbusBTU&amp;v=1</value>
   </data>
   <data name="UrlMensa_Week_CBNorth" xml:space="preserve">
-    <value>http://www.tu-cottbus.de/campusapp-data/Studentenwerk/index.php?mensa=CottbusBTU&amp;v=1</value>
+    <value>http://www.studentenwerk-frankfurt.de/2011/ClassPackage/App_IKMZ_BTU/index.php?mensa=CottbusBTU&amp;v=1</value>
   </data>
   <data name="UrlMensa_Week_CBSouth" xml:space="preserve">
-    <value>http://www.tu-cottbus.de/campusapp-data/Studentenwerk/index.php?mensa=CottbusHL&amp;v=1</value>
+    <value>http://www.studentenwerk-frankfurt.de/2011/ClassPackage/App_IKMZ_BTU/index.php?mensa=CottbusHL&amp;v=1</value>
   </data>
   <data name="UrlMensa_Week_SBFMain" xml:space="preserve">
-    <value>http://www.tu-cottbus.de/campusapp-data/Studentenwerk/index.php?mensa=Senftenberg&amp;v=1</value>
+    <value>http://www.studentenwerk-frankfurt.de/2011/ClassPackage/App_IKMZ_BTU/index.php?mensa=Senftenberg&amp;v=1</value>
   </data>
   <data name="SpsApi_CampusDomain" xml:space="preserve">
     <value>3</value>
@@ -417,4 +414,7 @@
   <data name="FileMap_CBMainMap" xml:space="preserve">
     <value>/Assets/campusmap.png</value>
   </data>
+  <data name="AppSetting_DevMode" xml:space="preserve">
+    <value>DevMode</value>
+  </data>
 </root>
\ No newline at end of file