diff --git a/DarkUI/Docking/DarkDockRegion.cs b/DarkUI/Docking/DarkDockRegion.cs
index c5710b5..bd1a3c1 100644
--- a/DarkUI/Docking/DarkDockRegion.cs
+++ b/DarkUI/Docking/DarkDockRegion.cs
@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.ComponentModel;
 using System.Drawing;
 using System.Windows.Forms;
@@ -131,10 +132,10 @@ namespace DarkUI
                 {
                     group.SendToBack();
 
-                    if (_groups.IsLast(group))
-                        group.Dock = dockStyle;
-                    else
+                    if (_groups.IsFirst(group))
                         group.Dock = DockStyle.Fill;
+                    else
+                        group.Dock = dockStyle;
                 }
             }
         }
@@ -200,7 +201,7 @@ namespace DarkUI
             _parentForm.ResizeEnd += ParentForm_ResizeEnd;
         }
 
-        private void ParentForm_ResizeEnd(object sender, System.EventArgs e)
+        private void ParentForm_ResizeEnd(object sender, EventArgs e)
         {
             if (_splitter != null)
                 _splitter.UpdateBounds();
diff --git a/DarkUI/Docking/Items/DarkDockSplitter.cs b/DarkUI/Docking/Items/DarkDockSplitter.cs
index 472a460..6a337e7 100644
--- a/DarkUI/Docking/Items/DarkDockSplitter.cs
+++ b/DarkUI/Docking/Items/DarkDockSplitter.cs
@@ -10,7 +10,11 @@ namespace DarkUI
 
         private Control _parentControl;
         private Control _control;
+
         private DarkSplitterType _splitterType;
+
+        private int _minimum;
+        private int _maximum;
         private DarkTranslucentForm _overlayForm;
 
         #endregion
@@ -30,7 +34,6 @@ namespace DarkUI
             _parentControl = parentControl;
             _control = control;
             _splitterType = splitterType;
-            _overlayForm = new DarkTranslucentForm(Color.Black);
 
             switch (_splitterType)
             {
@@ -51,15 +54,15 @@ namespace DarkUI
 
         public void ShowOverlay()
         {
-            UpdateOverlay(new Point(0, 0));
+            _overlayForm = new DarkTranslucentForm(Color.Black);
+            _overlayForm.Visible = true;
 
-            _overlayForm.Show();
-            _overlayForm.BringToFront();
+            UpdateOverlay(new Point(0, 0));
         }
 
         public void HideOverlay()
         {
-            _overlayForm.Hide();
+            _overlayForm.Visible = false;
         }
 
         public void UpdateOverlay(Point difference)
@@ -82,8 +85,7 @@ namespace DarkUI
                     break;
             }
 
-            _overlayForm.Location = bounds.Location;
-            _overlayForm.Size = bounds.Size;
+            _overlayForm.Bounds = bounds;
         }
 
         public void Move(Point difference)
diff --git a/DarkUI/Forms/DarkTranslucentForm.cs b/DarkUI/Forms/DarkTranslucentForm.cs
index 48fce7e..ac4d7d5 100644
--- a/DarkUI/Forms/DarkTranslucentForm.cs
+++ b/DarkUI/Forms/DarkTranslucentForm.cs
@@ -18,8 +18,9 @@ namespace DarkUI
 
         public DarkTranslucentForm(Color backColor, double opacity = 0.6)
         {
+            StartPosition = FormStartPosition.Manual;
             FormBorderStyle = FormBorderStyle.None;
-            Size = new Size(0, 0);
+            Size = new Size(1, 1);
             ShowInTaskbar = false;
             AllowTransparency = true;
             Opacity = opacity;