title: How to show a div when I scroll down on an ID in jQuery?
body: <p>I've found a solution how to show (fade in) a DIV when I scroll down an amount of pixels, let's say 400px from the top, but how to show a DIV when I scroll down on a DIV with a specific ID? (the thing is that I don't know the height of DIVs, so that's why I am trying to implement this functionality based on IDs)</p>
  
  <p>Thank you</p>