title: mobile - toggling a div on tap \ scroll
body: <p>I'm trying to build a Share Menu on a mobile page. I want this page to appear when the user taps \ scrolls the screen, and automatically hide it if he didn't tap \ scroll again after 2 seconds.</p>
  
  <p>How can I achieve this with javascript \ jquery?</p>
  
  <p>Thsnk's!</p>