let headerView : ParallaxHeaderView = ParallaxHeaderView.parallaxHeaderViewWithImage(UIImage(named: ""), forSize: CGSizeMake(self.tableView.frame.size.height, headerHeight)) as! ParallaxHeaderView

self.tableView.tableHeaderView = headerView

func  scrollViewDidScroll(scrollView: UIScrollView) {

    let header: ParallaxHeaderView = self.tableView.tableHeaderView as! ParallaxHeaderView
    header.layoutHeaderViewForScrollViewOffset(scrollView.contentOffset)

    self.tblHealthData.tableHeaderView = header

}