function playSound() {
        var borswer = window.navigator.userAgent.toLowerCase();
        if (borswer.indexOf("ie") >= 0) {
            //IE内核浏览器
            var strEmbed = '<embed name="embedPlay" src="../../images/sound/alert.mp3" autostart="true" hidden="true" loop="false"></embed>';
            if ($("body").find("embed").length <= 0)
                $("body").append(strEmbed);
            var embed = document.embedPlay;

            //浏览器不支持 audion，则使用 embed 播放
            embed.volume = 100;
            embed.play();
        } else {
            //非IE内核浏览器
            var strAudio = "<audio id='audioPlay' src='../../images/sound/alert.mp3' hidden='true'>";
            if ($("body").find("audio").length <= 0)
                $("body").append(strAudio);
            var audio = document.getElementById("audioPlay");

            //浏览器支持 audion
            audio.play();
        }
    }