function sound2Play() {

    if ( !sound2Embed ) {
        sound2Embed = document.createElement("embed");
        sound2Embed.setAttribute("src", "yshout/ding2.wav");
        sound2Embed.setAttribute("hidden", true);
        sound2Embed.setAttribute("autostart", true);
    } else sound2Stop();
    sound2Embed.removed = false;
    document.body.appendChild(sound2Embed);
}

function sound2Stop() {
    if ( sound2Embed && !sound2Embed.removed ) {
        document.body.removeChild(sound2Embed);
        sound2Embed.removed = true;
    }
}