diff --git a/src/holt_container_window.cc b/src/holt_container_window.cc
new file mode 100644
index 0000000..340a52a
--- /dev/null
+++ b/src/holt_container_window.cc
@@ -0,0 +1,40 @@
+#include "holt_container_window.hh"
+
+using namespace sgpem;
+
+
+  HoltContainerWindow::HoltContainerWindow(Simulation& simulation)
+  : _holt_widget(simulation)
+  {
+    // This just sets the title of our new window.
+    set_title(_("Holt Graph"));
+    add(_holt_widget);
+    _holt_widget.set_scaling_mode(CairoWidget::scaling_min);
+    _holt_widget.show();
+    //set_keep_above();
+  }
+  
+  HoltContainerWindow::~HoltContainerWindow()
+  {
+  }
+  
+  void  HoltContainerWindow::on_size_request(Gtk::Requisition* /* requisition */ )
+  {
+    int height = get_height();
+    int width  = get_width();
+    // if height/width >=5/3
+    if(height * 3 >= width * 5)
+    {
+      _holt_widget.set_arrange_mode(HoltWidget::arrange_vertical);
+    }
+    else if( width * 3 >= height * 5)
+    {
+      _holt_widget.set_arrange_mode(HoltWidget::arrange_horizontal);
+    }
+    else
+    {
+      _holt_widget.set_arrange_mode(HoltWidget::arrange_circular);
+    }
+  
+  
+  }
diff --git a/src/holt_container_window.hh b/src/holt_container_window.hh
new file mode 100644
index 0000000..df55725
--- /dev/null
+++ b/src/holt_container_window.hh
@@ -0,0 +1,55 @@
+// src/simulation_widget.hh - Copyright 2005, 2006, University
+//               of Padova, dept. of Pure and Applied
+//               Mathematics
+//
+// This file is part of SGPEMv2.
+//
+// This is free software; you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation; either version 2 of the License, or
+// (at your option) any later version.
+//
+// SGPEMv2 is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with SGPEMv2; if not, write to the Free Software
+// Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+
+#ifndef HOLT_CONTAINER_WINDOW_HH
+#define HOLT_CONTAINER_WINDOW_HH 1
+
+#include "config.h"
+#include "gettext.h"
+
+#include <gtkmm/window.h>
+
+#include <cassert>
+#include <iostream>
+
+#include "backend/simulation.hh"
+#include "cairo_widget.hh"
+#include "holt_widget.hh"
+
+namespace sgpem {
+  // ------------------------------------------------------
+  //
+  // HoltContainerWindow class
+  //
+  // contains and controls the tested holt widget
+  //
+  // ------------------------------------------------------
+  class HoltContainerWindow : public Gtk::Window
+  {
+  public:
+    HoltContainerWindow(Simulation& simulation);
+    virtual ~HoltContainerWindow();
+  protected:
+    virtual void  on_size_request (Gtk::Requisition* requisition);
+    HoltWidget          _holt_widget;
+  };
+
+} // ~ namespace sgpem
+#endif