/**
* Stop an iframe or HTML5 <video> from playing
* @param {Element} element The element that contains the video
*/
var stopVideo = function ( element ) {
var iframe = element.querySelector( 'iframe');
var video = element.querySelector( 'video' );
if ( iframe ) {
var iframeSrc = iframe.src;
iframe.src = iframeSrc;
}
if ( video ) {
video.pause();
}
};