title: How do you select a specific child div with jQuery?
body: <p>How do you select a div which is a child of the current $(this)? </p>
  
  <p>I have many divs with the class row, in each of which I have a hidden div called form_explanation. I want to show() the div form_explanation when the row is onClick-ed. </p>
  
  <p>Thanks!</p>