title: Show/hide iframes with an event listener
body: <p>I am fairly new to javascript/web development but I am tasked in a group project to create image comparison sliders to an existing webpage.  There is a map (ArcGIS web map) on the page, and I have found a service that hosts image comparison sliders in iframes.</p>
  
  <p>I was thinking that I could use an EventListener to listen for when the user clicks on a point on the map, and then it would display the corresponding iframe, and hide the last one.</p>
  
  <p>Is this possible?</p>