         // the element with the shared displayObject and the next element that has a displayObject.
         if (numGraphicElements > 0)
         {
-	        var length:int = numElements;
-	        for (var i:int = 0; i < length; i++)
-	        {
-	            var element:IGraphicElement = getElementAt(i) as IGraphicElement;
-	            if (!element)
-	               continue;
-
-	            // Do a special check for layer, we may stumble upon an element with layer != 0
-	            // before we're done with the current shared sequence and we don't want to mark
-	            // the sequence as valid, until we reach the next sequence.   
+            var length:int = numElements;
+            for (var i:int = 0; i < length; i++)
+            {
+                var element:IGraphicElement = getElementAt(i) as IGraphicElement;
+                if (!element)
+                   continue;
+
+                // Do a special check for layer, we may stumble upon an element with layer != 0
+                // before we're done with the current shared sequence and we don't want to mark
+                // the sequence as valid, until we reach the next sequence.   
                 if (element.depth == 0)
                 {
-                    // Is this the start of a new shared sequence?         	
-	            	if (element.displayObjectSharingMode != DisplayObjectSharingMode.USES_SHARED_OBJECT)
-	            	{
-	            	    // We have finished redrawing the previous sequence
-	            	    if (sharedDisplayObject)
-	            	        sharedDisplayObject.redrawRequested = false;
-	            	    
-	            	    // Start the new sequence
+                    // Is this the start of a new shared sequence?          
+                    if (element.displayObjectSharingMode != DisplayObjectSharingMode.USES_SHARED_OBJECT)
+                    {
+                        // We have finished redrawing the previous sequence
+                        if (sharedDisplayObject)
+                            sharedDisplayObject.redrawRequested = false;
+                        
+                        // Start the new sequence
                         sharedDisplayObject = element.displayObject as ISharedDisplayObject;
-	            	}
-	            	
-	            	if (!sharedDisplayObject || sharedDisplayObject.redrawRequested) 
-	            		element.validateDisplayList();
-	            }
-	            else
-	            {
-	                // If we have layering, we don't share the display objects.
-	                // Don't update the current sharedDisplayObject 
-	                var elementDisplayObject:ISharedDisplayObject = element.displayObject as ISharedDisplayObject;
-	                if (!elementDisplayObject || elementDisplayObject.redrawRequested)
-	                {
-	                   element.validateDisplayList();
-
-	                   if (elementDisplayObject)
+                    }
+                    
+                    if (!sharedDisplayObject || sharedDisplayObject.redrawRequested) 
+                        element.validateDisplayList();
+                }
+                else
+                {
+                    // If we have layering, we don't share the display objects.
+                    // Don't update the current sharedDisplayObject 
+                    var elementDisplayObject:ISharedDisplayObject = element.displayObject as ISharedDisplayObject;
+                    if (!elementDisplayObject || elementDisplayObject.redrawRequested)
+                    {
+                       element.validateDisplayList();
+
+                       if (elementDisplayObject)
                            elementDisplayObject.redrawRequested = false;
-	                }
-	            }
-	        }
-        }
-	        
+                    }
+                }
+            }
+        }
+            
         // Mark the last shared displayObject valid
         if (sharedDisplayObject)
             sharedDisplayObject.redrawRequested = false;
         
         if (scaleGridChanged)
         {
-        	scaleGridChanged = false;
-        
-        	if (isValidScaleGrid())
-        	{
-	        	if (numChildren > 0)
-	        		throw new Error(resourceManager.getString("components", "scaleGridGroupError"));
-
-	        	super.scale9Grid = new Rectangle(scaleGridLeft, 
-	        							   scaleGridTop,	
-	        							   scaleGridRight - scaleGridLeft, 
-	        							   scaleGridBottom - scaleGridTop);
-	        } 
-	        else
-	        {
-	        	super.scale9Grid = null;
-	        }							   
+            scaleGridChanged = false;
+        
+            if (isValidScaleGrid())
+            {
+                if (numChildren > 0)
+                    throw new Error(resourceManager.getString("components", "scaleGridGroupError"));
+
+                super.scale9Grid = new Rectangle(scaleGridLeft, 
+                                           scaleGridTop,    
+                                           scaleGridRight - scaleGridLeft, 
+                                           scaleGridBottom - scaleGridTop);
+            } 
+            else
+            {
+                super.scale9Grid = null;
+            }                              
         }
     }
 

 *  attributes of its superclass and adds the following tag attributes:</p>
 *
 *  <pre>
 *  &lt;Group
 *    <strong>Properties</strong>
 *    blendMode="normal"
 *    mxmlContent="null"

     *  @private
     */
    override protected function updateDisplayList(unscaledWidth:Number, unscaledHeight:Number):void
    {       
        super.updateDisplayList(unscaledWidth, unscaledHeight);

        // If the DisplayObject assignment is still not completed, then postpone validation
