<audio autoplay>
<source src="" type="audio/mp3" />
<embed src="" type="audio/mp3"/>
</audio>

if(navigator.userAgent.indexOf("Chrome") > -1){
如果是Chrome：
<audio src="" type="audio/mp3" autoplay=”autoplay” hidden="true"></audio>
}else if（navigator.userAgent.indexOf("Firefox")!=-1）{
如果是Firefox：
<embed src="" type="audio/mp3" hidden="true" loop="false" mastersound></embed>
}else if（navigator.appName.indexOf("Microsoft Internet Explorer")!=-1 && document.all）{
如果是IE(6,7,8):
<object classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95"><param name="AutoStart" value="1" /><param name="Src" value="" /></object>
}else if（navigator.appName.indexOf("Opera")!=-1）{
如果是Oprea：
<embed src="" type="audio/mpeg" loop="false"></embed>
}else{
<embed src="" type="audio/mp3" hidden="true" loop="false" mastersound></embed>
}

var ua = navigator.userAgent.toLowerCase();
if(ua.match(/msie ([\d.]+)/)){
jQuery('#__alert_sound').html('<object classid="clsid:22D6F312-B0F6-11D0-94AB-0080C74C7E95"><param name="AutoStart" value="1" /><param name="Src" value="/sounds/alert/1.mp3" /></object>');
}
else if(ua.match(/firefox\/([\d.]+)/)){
jQuery('#__alert_sound').html('<embed src="/sounds/alert/1.mp3" type="audio/mp3" hidden="true" loop="false" mastersound></embed>');
}
else if(ua.match(/chrome\/([\d.]+)/)){
jQuery('#__alert_sound').html('<audio src="/sounds/alert/1.mp3" type="audio/mp3" autoplay=”autoplay” hidden="true"></audio>');
}
else if(ua.match(/opera.([\d.]+)/)){
jQuery('#__alert_sound').html('<embed src="/sounds/alert/1.mp3" hidden="true" loop="false"><noembed><bgsounds src="/sounds/alert/1.mp3"></noembed>');
}
else if(ua.match(/version\/([\d.]+).*safari/)){
jQuery('#__alert_sound').html('<audio src="/sounds/alert/1.mp3" type="audio/mp3" autoplay=”autoplay” hidden="true"></audio>');
}
else {
jQuery('#__alert_sound').html('<embed src="/sounds/alert/1.mp3" type="audio/mp3" hidden="true" loop="false" mastersound></embed>');
}