function playclip() {
    if (navigator.appName == "Microsoft Internet Explorer" && (navigator.appVersion.indexOf("MSIE 7")!=-1) || (navigator.appVersion.indexOf("MSIE 8")!=-1)) {
        if (document.all){
            document.all.sound.src = "http://www.alexkatz.me/codepen/music/interlude.mp3";
        }
    } else {
        var audio = document.getElementsByTagName("audio")[0];
        audio.play();
    }
}