 			let contentOffset = (superview as! UITableView).contentOffset
 			self.alpha = (contentOffset.y + (superview as! UIScrollView).height - (superview as! UIScrollView).contentSize.height - alphaAnimationOffset) / self.height
 			if self.alpha < 1.0 {
-				self.promptLabel.text = "上拉加载"
+//				self.promptLabel.text = "上拉加载"
 			} else {
-				self.promptLabel.text = "松开加载"
+//				self.promptLabel.text = "松开加载"
 			}
 			break
 		case &UIScrollViewContentSizeContext:


	private var button: NBButton?

	@IBOutlet weak var loadingImageView: UIImageView! {
		didSet {
			loadingImageView.hidden = true
		}
	}
	@IBOutlet weak var promptLabel: UILabel! {
		didSet {
			promptLabel.hidden = false
		}
	}

	// MARK: Stored Properties

	/// a flag indicates if is loading more
	var isLoadingMore: Bool = false

			})
		}

		/*self.promptLabel.hidden = true
		self.loadingImageView.hidden = false

		var images = [UIImage]()
