title: how to catch the click event on a leaflet popup
body: <p>I'm having multiple popups on a leaflet map open at the same time, and they can overlap. I want to bring a popup to front if clicked on. While I have no trouble getting the click on the map with <code>map.on('click', function(e) {do something;});</code> I can't seem to do the same thing with a popup.</p>
  
  <p>How can i catch the click event on a L.Popup?</p>