U.Helper

<div>Координата X: <input type="text" style="width:100px;" id="corX" /></div><br />
<div>Координата X: <input type="text" style="width:100px;" id="corY" /></div>
<script type="text/javascript">
document.body.onmousemove=function(){
e=event || window.event;
document.getElementById('corX').value=e.clientX;
document.getElementById('corY').value=e.clientY;
}
</script>

element.onmouseover = function () {
var i = document.createElement('bgsound'), i.src = 'звук.wav', i.loop = 1;
document.body.appendChild(i);
}