What's the best way to mute a HTML5 audio element? I don't want the browser's custom controls, so I've been looking at the javascript instead. Unfortunately it just doesn't seem to work for me :( I'm undoubtedly doing something very wrong.

    <audio id=background_audio autoplay=autoplay>

      <source src=static/audio/clip.ogg type=audio/ogg />

      <source src=static/audio/clip.mp3 type=audio/mpeg />

    </audio> 



<a href=# onclick=document._video.muted=true; return false>mute sound</a>

Still getting my head around this. Thanks!