     var newsId : String!
     var viewModel = ZFNewsDetailViewModel()
     var backgroundImg : UIImageView!
+    /// top图片上的title
     var titleLabel : UILabel!
-    var heardView : ParallaxHeaderView!
     /// 新闻额外信息
     var newsExtra : ZFNewsExtra!
     /// loading

        self.webView.scrollView.addSubview(backgroundImg)
        self.webView.scrollView.delegate = self
        
        headerView = ZFHeaderRefreshView(frame: CGRectMake(0, -60, ScreenWidth, 60))
        self.webView.scrollView.addSubview(headerView)
        
        footerView = ZFFooterView(frame: CGRectMake(0, 0, ScreenWidth, 60))
        self.webView.scrollView.addSubview(footerView)
        
        titleLabel = UILabel()
        titleLabel.numberOfLines = 0
        titleLabel.textColor = UIColor.whiteColor()

        activityIndicatorView = NVActivityIndicatorView(frame: CGRectMake(x, y, width, height), type: .BallClipRotatePulse, color: ThemeColor, size: CGSizeMake(50, 50))
        activityIndicatorView.center = self.view.center
        self.view.addSubview(activityIndicatorView)
        
        headerView = ZFHeaderRefreshView(frame: CGRectMake(0, -60, ScreenWidth, 60))
        self.webView.scrollView.addSubview(headerView)
        
        footerView = ZFFooterView(frame: CGRectMake(0, 0, ScreenWidth, 60))
        self.webView.scrollView.addSubview(footerView)
        
    }

