if (window.attachEvent)
window.attachEvent("onload", setupPlaySound);
else
window.addEventListener("load", setupPlaySound, false);

function setupPlaySound()
{
if (navigator.appName == "Microsoft Internet Explorer")
{
var snd = document.createElement("bgsound");
document.getElementsByTagName("body")[0].appendChild(snd);

playSound = function(url)
{

snd.src = url;
}
}
else
{
playSound = function(url)
{
var obj = document.createElement("object");
obj.width="0px";
obj.height="0px";
obj.type = "audio/x-wav";
obj.data = url;

var body = document.getElementsByTagName("body")[0];
body.appendChild(obj);
}
}
}