Index: WindowPlugins/GUIPictures/GUISlideShow.cs
===================================================================
--- WindowPlugins/GUIPictures/GUISlideShow.cs	(revision 26673)
+++ WindowPlugins/GUIPictures/GUISlideShow.cs	(working copy)
@@ -823,10 +823,43 @@
 
       // x-fade
       GUIGraphicsContext.DX9Device.Clear(ClearFlags.Target, Color.Black, 1.0f, 0);
+
+      //Show center-zoomed picture as Background
+      int lColorDiffuse = 0xff;
+      lColorDiffuse <<= 24;
+      lColorDiffuse |= 0x202020;
+      float backWidth, backHeight, backX, backY, helperRatio, helperScreen;
+      helperScreen = ((float)GUIGraphicsContext.Width / (float)GUIGraphicsContext.Height);
+      helperRatio = (16F / 9F);
+
+      if (helperScreen < 1.7)
+      {
+        helperRatio = (4F / 3F);
+      }
+
       if (_transitionMethod != 9 || _currentSlide == null)
       {
         GetOutputRect(_backgroundSlide.Width, _backgroundSlide.Height, _zoomFactorBackground, out x, out y, out width,
                       out height);
+        
+        //Get rectangle for background
+        if (width >= height)
+        {
+          backHeight = (int)(height / 2);
+          backWidth = (int)(backHeight * helperRatio);
+          backY = (int)(height / 4);
+          backX = (int)((width - backWidth) / 2);
+        }
+        else
+        {
+          backWidth = (int)(width / 2);
+          backHeight = (int)(backWidth / helperRatio);
+          backX = (int)(width / 4);
+          backY = (int)((height - backHeight) / 2);
+        }
+        
+        Util.Picture.RenderImage(_backgroundSlide.Texture, 0, 0, GUIGraphicsContext.Width, GUIGraphicsContext.Height, backWidth, backHeight, backX, backY, lColorDiffuse);
+
         if (_zoomTopBackground + _zoomHeight > _backgroundSlide.Height)
         {
           _zoomHeight = _backgroundSlide.Height - _zoomTopBackground;
@@ -847,6 +880,27 @@
 
       if (_currentSlide != null)
       {
+        //Show center-zoomed picture as Background
+        GetOutputRect(_currentSlide.Width, _currentSlide.Height, _currentZoomFactor, out x, out y, out width, out height);
+        
+        //Get rectangle for background
+        if (width >= height)
+        {
+          backHeight = (int)(height / 2);
+          backWidth = (int)(backHeight * helperRatio);
+          backY = (int)(height / 4);
+          backX = (int)((width - backWidth) / 2);
+        }
+        else
+        {
+          backWidth = (int)(width / 2);
+          backHeight = (int)(backWidth / helperRatio);
+          backX = (int)(width / 4);
+          backY = (int)((height - backHeight) / 2);
+        }
+        
+        Util.Picture.RenderImage(_currentSlide.Texture, 0, 0, GUIGraphicsContext.Width, GUIGraphicsContext.Height, backWidth, backHeight, backX, backY, lColorDiffuse);
+
         // render the new picture
         bool bResult = false;
         //Log.Info("method:{0} frame:{1}", _transitionMethod, _frameCounter);