<EMBED NAME="moan" SRC="moan.mp3" LOOP=FALSE AUTOSTART=FALSE HIDDEN=TRUE MASTERSOUND>
<EMBED NAME="whistle" SRC="whistle.mp3" LOOP=FALSE AUTOSTART=FALSE HIDDEN=TRUE MASTERSOUND>

<script>
var html5_audiotypes={
"mp3": "audio/mpeg",
"mp4": "audio/mp4",
"ogg": "audio/ogg",
"wav": "audio/wav"
}
function createsoundbite(sound){
var html5audio=document.createElement('audio')
if (html5audio.canPlayType){ //check support for HTML5 audio
for (var i=0; i<arguments.length; i++){
var sourceel=document.createElement('source')
sourceel.setAttribute('src', arguments[i])
if (arguments[i].match(/\.(\w+)$/i))
sourceel.setAttribute('type', html5_audiotypes[RegExp.$1])
html5audio.appendChild(sourceel)
}
html5audio.load()
html5audio.playclip=function(){
html5audio.pause()
html5audio.currentTime=0
html5audio.play()
}
return html5audio
}
else{
return {playclip:function(){throw new Error("Your browser doesn't support HTML5 audio unfortunately")}}
}
}
var moan=createsoundbite("moan.mp3")
var whistle=createsoundbite("whistle.mp3")
</script>

onmouseover="moan.playclip()"

onmouseover="whistle.playclip()"