diff --git a/app/controllers/lvas_controller.rb b/app/controllers/lvas_controller.rb
index 2c96802..dd6781e 100755
--- a/app/controllers/lvas_controller.rb
+++ b/app/controllers/lvas_controller.rb
@@ -1,6 +1,6 @@
 class LvasController < ApplicationController
   # GET /lvas
- before_filter {@toolbar_elements =[]} 
+  before_filter :load_toolbar, :only => [:show]
   load_and_authorize_resource
   def index
     @lvas = Lva.all
@@ -14,13 +14,7 @@ class LvasController < ApplicationController
 
   def show
     @lva = Lva.find_by_id(params[:id])
-   @beispiel=Beispiel.new
-#    @toolbar_elements<<{:hicon=>'icon-plus-sign', :icon=>:plus, :text => "Neues Beispiel", :path=> new_beispiel_path(:lva_id =>@lva.id)}
-     @toolbar_elements<<{:hicon=>'icon-pencil', :icon=>:pencil,:text =>I18n.t('common.edit'),:path => edit_lva_path(@lva)}
-    @toolbar_elements << {:hicon=>'icon-remove-circle', :text=>I18n.t('common.delete'), :path=> lva_path(@lva), :method=>:delete, :confirm=>'Sure?' }
-    @toolbar_elements << {:hicon=>'icon-remove-circle', :text=>"Tissvergleichladen", :path=> lva_compare_tiss_path(@lva)}
-
-
+    @beispiel=Beispiel.new
   end
 
   # GET /lvas/new
@@ -36,12 +30,10 @@ class LvasController < ApplicationController
   def edit
     @lva = Lva.find(params[:id])
     @semester =  @lva.modul.map(&:modulgruppen).flatten.map(&:studium).map(&:semester).flatten.uniq
-
-
   end
 
   def compare_tiss
-    @lva = Lva.find_by_id(params[:lva_id])
+    @lva = Lva.find_by_id(params[:id])
     @lvatiss = Lva.new
     @lvatiss.lvanr=@lva.lvanr
     @lvatiss.load_tissdata("-2013W")
@@ -49,7 +41,7 @@ class LvasController < ApplicationController
   end
   
   def load_tiss
-    @lva = Lva.find_by_id(params[:lva_id])
+    @lva = Lva.find_by_id(params[:id])
     @lva.load_tissdata("-2013W")
     if @lva.save
       redirect_to @lva , notice: 'Lva von TISS geleaden.'
@@ -58,10 +50,6 @@ class LvasController < ApplicationController
     end
   end
 
-
-
-  # POST /lvas
-  # POST /lvas.json
   def create
     @lva = Lva.new(params[:lva])
  
@@ -69,40 +57,44 @@ class LvasController < ApplicationController
       if @lva.save
         @lva.add_semesters
         format.html { redirect_to @lva, notice: 'Lva was successfully created.' }
-        
       else
         format.html { render action: "new" }
-        
       end
     end
   end
 
-  # PUT /lvas/1
-  # PUT /lvas/1.json
   def update
     @lva = Lva.find(params[:id])
-    
     respond_to do |format|
       if @lva.update_attributes(params[:lva])
         @lva.add_semesters
         format.html { redirect_to @lva, notice: 'Lva was successfully updated.' }
- 
       else
         format.html { render action: "edit" }
-
       end
     end
   end
 
-  # DELETE /lvas/1
-  # DELETE /lvas/1.json
   def destroy
     @lva = Lva.find(params[:id])
     @lva.destroy
 
     respond_to do |format|
       format.html { redirect_to lvas_url }
-   
     end
   end
+
+private
+  def load_toolbar
+    @lva = Lva.find_by_id(params[:id])
+    @toolbar_elements =[]
+    @toolbar_elements<<{:hicon=>'icon-pencil', :icon=>:pencil,:text =>I18n.t('common.edit'),:path => edit_lva_path(@lva)} if can? :edit, @lva
+    @toolbar_elements << {:hicon=>'icon-remove-circle', :text=>"Tissvergleichladen", :path=> lva_compare_tiss_path(@lva)} if can? :compare_tiss, @lva
+    @toolbar_elements << {:hicon=>'icon-remove-circle', :text=>I18n.t('common.delete'), :path=> lva_path(@lva), :method=>:delete, :confirm=>'Sure?' } if can? :delete, @lva
+
+
+
+
+  end
+
 end
diff --git a/app/controllers/modulgruppen_controller.rb b/app/controllers/modulgruppen_controller.rb
index 42d0502..6c2e6f8 100755
--- a/app/controllers/modulgruppen_controller.rb
+++ b/app/controllers/modulgruppen_controller.rb
@@ -24,7 +24,7 @@ class ModulgruppenController < ApplicationController
     @toolbar_elements = [ {:text=>'Zurück', :path=>studium_path(@studium, :ansicht=>:modulgruppenansicht)}]
     @toolbar_elements << {:hicon=>'icon-plus-sign', :text=>I18n.t('modulgruppe.addmodul'), :path=>new_modul_path(@modulgruppe)}
     @toolbar_elements << {:hicon=>'icon-pencil', :text=>I18n.t('modulgruppe.edit'), :path=>edit_modulgruppe_path(@modulgruppe)}
-    @toolbar_elements << {:hicon=>'icon-remove-circle', :text=> I18n.t('common.delete'),:path => studium_path(@studium, :ansicht=>:modulgruppenansicht), :method=> :delete,:confirm=>"Sure?" }
+    @toolbar_elements << {:hicon=>'icon-remove-circle', :text=> I18n.t('common.delete'),:path => studium_path(@studium, :ansicht=>:modulgruppenansicht), :method=> :delete,:confirm=>'Sure?' }
   end
 
   # GET /modulgruppen/new
@@ -71,7 +71,6 @@ class ModulgruppenController < ApplicationController
 
   def update
     @modulgruppe = Modulgruppe.find(params[:id])
-
     respond_to do |format|
       if @modulgruppe.update_attributes(params[:modulgruppe])
         format.html { redirect_to @modulgruppe, notice: 'Modulgruppe was successfully updated.' }