 			_thumbnail.width = newDimensions.newWidth;
 			_thumbnail.height = newDimensions.newHeight;
 			centerImages();
-			addChild(_thumbnail);	
+			if (!_hideThumb)
+				addChild(_thumbnail);
 		}
 		
 		public function unloadThumbnail() : void

					removeChild(_thumbnail);
				addChild(_thumbnail);
			}
		}
		
		public function drawBg( color : uint = 0x000000, alpha : Number = 1) : void

			//the FocusManager dispatch Flex event to astra UIComponent
			if (_thumbnail)
				_thumbnail.alpha = 0;
			_hideThumb = true;
		}
		
		public function showThumbnail() : void
