diff --git a/umbraco/presentation/umbraco.presentation.csproj b/umbraco/presentation/umbraco.presentation.csproj
index 8602638de9..9768ea356b 100644
--- a/umbraco/presentation/umbraco.presentation.csproj
+++ b/umbraco/presentation/umbraco.presentation.csproj
@@ -1239,6 +1239,7 @@
     </Compile>
     <Compile Include="umbraco\Trees\MediaRecycleBin.cs" />
     <Compile Include="umbraco\Trees\NodeActionsEventArgs.cs" />
+    <Compile Include="umbraco\Trees\TreeEventArgs.cs" />
     <Compile Include="umbraco\Trees\TreeRequestParams.cs" />
     <Compile Include="umbraco\webservices\MacroContainerService.asmx.cs">
       <DependentUpon>MacroContainerService.asmx</DependentUpon>
diff --git a/umbraco/presentation/umbraco/Trees/BaseContentTree.cs b/umbraco/presentation/umbraco/Trees/BaseContentTree.cs
index 3046f905fe..bd52b3f9f1 100644
--- a/umbraco/presentation/umbraco/Trees/BaseContentTree.cs
+++ b/umbraco/presentation/umbraco/Trees/BaseContentTree.cs
@@ -159,6 +159,9 @@ function openContent(id) {
             //get documents to render
             Document[] docs = Document.GetChildrenForTree(m_id);
 
+            var args = new TreeEventArgs(Tree);
+            OnBeforeTreeRender(docs, args);
+
             foreach (Document dd in docs)
             {
                 List<IAction> allowedUserOptions = GetUserActionsForNode(dd);
@@ -175,9 +178,10 @@ function openContent(id) {
                         Tree.Add(node);
                         OnAfterNodeRender(ref Tree, ref node, EventArgs.Empty);
                     }
-                    
                 }
             }
+            //args = new TreeEventArgs(Tree);
+            OnAfterTreeRender(docs, args);
         }
 
         #region Tree Attribute Setter Methods
diff --git a/umbraco/presentation/umbraco/Trees/BaseMediaTree.cs b/umbraco/presentation/umbraco/Trees/BaseMediaTree.cs
index b3a6081b1f..928223af6e 100644
--- a/umbraco/presentation/umbraco/Trees/BaseMediaTree.cs
+++ b/umbraco/presentation/umbraco/Trees/BaseMediaTree.cs
@@ -1,36 +1,17 @@
 using System;
-using System.Collections;
 using System.Collections.Generic;
-using System.Data;
-using System.IO;
 using System.Text;
-using System.Web;
-using System.Xml;
-using System.Configuration;
 using umbraco.BasePages;
 using umbraco.BusinessLogic;
-using umbraco.cms.businesslogic;
-using umbraco.cms.businesslogic.cache;
-using umbraco.cms.businesslogic.contentitem;
-using umbraco.cms.businesslogic.datatype;
-using umbraco.cms.businesslogic.language;
-using umbraco.cms.businesslogic.media;
-using umbraco.cms.businesslogic.member;
-using umbraco.cms.businesslogic.property;
-using umbraco.cms.businesslogic.web;
-using umbraco.interfaces;
-using umbraco.DataLayer;
 using umbraco.BusinessLogic.Actions;
-using umbraco.BusinessLogic.Utils;
-using umbraco.cms.presentation.Trees;
-using umbraco.IO;
+using umbraco.cms.businesslogic.media;
+using umbraco.cms.businesslogic.property;
+using umbraco.interfaces;
 
 namespace umbraco.cms.presentation.Trees
 {
 	public abstract class BaseMediaTree : BaseTree
 	{
-
-		
 		public BaseMediaTree(string application)
 			: base(application)
 		{
@@ -74,7 +55,10 @@ function openMedia(id) {
         public override void Render(ref XmlTree tree)
         {
 			Media[] docs = new Media(m_id).Children;
-            
+
+            var args = new TreeEventArgs(tree);
+            OnBeforeTreeRender(docs, args);
+
             foreach (Media dd in docs)
             {
                 XmlTreeNode xNode = XmlTreeNode.Create(this);
@@ -131,8 +115,8 @@ function openMedia(id) {
                     tree.Add(xNode);
                     OnAfterNodeRender(ref tree, ref xNode, EventArgs.Empty);
                 }
-                
             }
+            OnAfterTreeRender(docs, args);
         }
 
 		/// <summary>
diff --git a/umbraco/presentation/umbraco/Trees/BaseTree.cs b/umbraco/presentation/umbraco/Trees/BaseTree.cs
index 44cc648228..dab394ff1c 100644
--- a/umbraco/presentation/umbraco/Trees/BaseTree.cs
+++ b/umbraco/presentation/umbraco/Trees/BaseTree.cs
@@ -1,27 +1,11 @@
 using System;
-using System.Collections;
 using System.Collections.Generic;
-using System.Data;
-using System.IO;
+using System.ComponentModel;
 using System.Text;
-using System.Web;
 using System.Xml;
-using System.Configuration;
-using umbraco.BasePages;
 using umbraco.BusinessLogic;
-using umbraco.cms.businesslogic;
-using umbraco.cms.businesslogic.cache;
-using umbraco.cms.businesslogic.contentitem;
-using umbraco.cms.businesslogic.datatype;
-using umbraco.cms.businesslogic.language;
-using umbraco.cms.businesslogic.media;
-using umbraco.cms.businesslogic.member;
-using umbraco.cms.businesslogic.property;
-using umbraco.cms.businesslogic.web;
-using umbraco.interfaces;
-using umbraco.DataLayer;
-using umbraco.BusinessLogic.Utils;
 using umbraco.BusinessLogic.Actions;
+using umbraco.interfaces;
 
 namespace umbraco.cms.presentation.Trees
 {
@@ -490,7 +474,9 @@ namespace umbraco.cms.presentation.Trees
         public delegate void AfterNodeRenderEventHandler(ref XmlTree sender, ref XmlTreeNode node, EventArgs e);
         public static event BeforeNodeRenderEventHandler BeforeNodeRender;
         public static event AfterNodeRenderEventHandler AfterNodeRender;
-        
+
+        public static event EventHandler<TreeEventArgs> BeforeTreeRender;
+        public static event EventHandler<TreeEventArgs> AfterTreeRender;
 
         /// <summary>
         /// Raises the <see cref="E:BeforeNodeRender"/> event.
@@ -502,7 +488,6 @@ namespace umbraco.cms.presentation.Trees
                 BeforeNodeRender(ref sender, ref node, e);
         }
 
-
         /// <summary>
         /// Raises the <see cref="E:AfterNodeRender"/> event.
         /// </summary>
@@ -513,6 +498,18 @@ namespace umbraco.cms.presentation.Trees
                 AfterNodeRender(ref sender, ref node, e);
         }
 
+        protected virtual void OnBeforeTreeRender(object sender, TreeEventArgs e)
+        {
+            if (BeforeTreeRender != null)
+                BeforeTreeRender(sender, e);
+        }
+
+        protected virtual void OnAfterTreeRender(object sender, TreeEventArgs e)
+        {
+            if (AfterTreeRender != null)
+                AfterTreeRender(sender, e);
+        }
+
         /// <summary>
         /// Event that is raised once actions are assigned to nodes
         /// </summary>
diff --git a/umbraco/presentation/umbraco/Trees/FileSystemTree.cs b/umbraco/presentation/umbraco/Trees/FileSystemTree.cs
index 51f0840971..84514d3a39 100644
--- a/umbraco/presentation/umbraco/Trees/FileSystemTree.cs
+++ b/umbraco/presentation/umbraco/Trees/FileSystemTree.cs
@@ -52,6 +52,10 @@ namespace umbraco.cms.presentation.Trees
 
             DirectoryInfo dirInfo = new DirectoryInfo(path);
             DirectoryInfo[] dirInfos = dirInfo.GetDirectories();
+
+            var args = new TreeEventArgs(tree);
+            OnBeforeTreeRender(dirInfo, args);
+
             foreach (DirectoryInfo dir in dirInfos)
             {
                 if ((dir.Attributes & FileAttributes.Hidden) == 0)
@@ -103,9 +107,7 @@ namespace umbraco.cms.presentation.Trees
 
                 }
             }
-        }
-
-        
-        
+            OnAfterTreeRender(dirInfo, args);
+        }        
     }
 }
diff --git a/umbraco/presentation/umbraco/Trees/TreeEventArgs.cs b/umbraco/presentation/umbraco/Trees/TreeEventArgs.cs
new file mode 100644
index 0000000000..54dbc18622
--- /dev/null
+++ b/umbraco/presentation/umbraco/Trees/TreeEventArgs.cs
@@ -0,0 +1,26 @@
+using System;
+using umbraco.cms.businesslogic.web;
+
+namespace umbraco.cms.presentation.Trees
+{
+    /// <summary>
+    /// 
+    /// </summary>
+    public class TreeEventArgs : EventArgs
+    {
+        /// <summary>
+        /// Gets the tree.
+        /// </summary>
+        /// <value>The tree.</value>
+        public XmlTree Tree { get; private set; }
+
+        /// <summary>
+        /// Initializes a new instance of the <see cref="TreeEventArgs"/> class.
+        /// </summary>
+        /// <param name="tree">The tree which the event is for.</param>
+        public TreeEventArgs(XmlTree tree)
+        {
+            this.Tree = tree;
+        }
+    }
+}