<html><head><script type="text/javascript">function somefunc(event){debugger;console.log("*************************How do we know if this onbeforeunload trigger point is click in the embeded pdf ********************");}</script></head><body onbeforeunload="somefunc();"><div><iframe style="width: 100%; height: 100%; display: block;" id="documentPreviewPane" name="documentPreviewPane" frameborder="0"></iframe><script> jQuery(document).ready(function () { var url = 'https://drive.google.com/file/d/1hbxDMPuG6CnWox92orJYvvQeTsHAb3uT/view'; jQuery('#documentPreviewPane').attr('src', url); }); </script></div></body></html>