title: Parallax effect on UITableView with an horizontal UIScrollView
body: <p>I created a parallax view on a tableview putting an horizontal scrollview behind the headerTableView.</p>
  
  <p>I set <code>tableView.backgroundColor = [UIColor clearColor];</code></p>
  
  <p>then the <code>tableView.headerTableView.backgroundColor = [UIColor clearColor];</code></p>
  
  <p>and set my scrollView like that :</p>
  
  <pre><code>[self.view insertSubview:scrollView belowSubview:tableview];
  </code></pre>
  
  <p>The parallax effect works perfectly but my issue is that the user cannot interact with the horizontal scrollview since it's behind the tableView;</p>
  
  <p>I tried to put the <code>tableView.headerTableView.userInteractionEnabled = NO;</code> but it does not work.</p>
  
  <p>If I want to interact with the scrollView I need to set the <code>tableView.userInteractionEnabled = NO;</code> but then I cannot interact with the tableView anymore.</p>
  
  <p>Is there a tricky way to be able to interact with the scrollView and the tableView and keep the parallax effect?</p>