title: Control Google Docs embedded viewer with JavaScript
body: <p>I need to control the embedded Google Docs viewer in my site. More specifically I need to be able to enable/disable the controls for Google Slides view and to be able to start/stop the presentation with JavaScript. </p>
  
  <p>I was not able to find any JavaScript API for that, nor I have been able to add my host so my JavaScript to be able to communicate with the <code>iframe</code> content. </p>
  
  <p>Anyone did something like this?</p>