title: Image z-indexed over iframe play button that passes click through directly without js
body: <p>Basically, is there a way to make an image/div "invisible" in the sense that user click passes right through it to div beneath it in z-space?</p>
  
  <p>Example is Youtube video in iframe, but want custom play button.  Catch is that it must be user pressing the native play button that initiates play.  It cannot be triggered via js api or any automated method.  So... essentially need to have user see the image, but have it act as if it is not there when user clicks.</p>
  
  <p>Any suggestions?</p>