Hi, I am not experienced in Javascript, I have the following script to play video files on Andriod phone, and it works fine.

 <script type="text/javascript">
        function PlayMyVideo(arg) {
            var myVideo = document.getElementById([arg]);
            myVideo.play();
        }
    </script>
<video id="what" src="what.mp4" poster="" />
<input type="button" onclick="PlayMyVideo('what')" value="Play" />

I am trying to write the tag on the fly:

  <script type="text/javascript">
        function PlayVideo() {
            new_video = document.createElement('video');
            new_video.setAttribute('scr', 'what.mp4'); 
            new_video.play(); 
         }
    </script>
<input type="button" onclick="PlayVideo()" value="Play2" />

Nothing happen, would appreciate your suggestions. Thanks in advance