<!DOCTYPE html>
<html>
<body>
<audio controls onloadeddata="myFunction()">
<source src="horse.ogg" type="audio/ogg">
<source src="horse.mp3" type="audio/mpeg">
Your browser does not support the audio element.
</audio>
<p>Video courtesy of <a href="http://www.bigbuckbunny.org/" target="_blank">Big Buck Bunny</a>.</p>
<script>
function myFunction() {
alert("Browser has loaded the current frame");
}
</script>
</body>
</html>