function doSomething(e) {
var posx = 0;
var posy = 0;
if (!e) var e = window.event;
if (e.pageX || e.pageY) {
posx = e.pageX;
posy = e.pageY;
}
else if (e.clientX || e.clientY) {
posx = e.clientX + document.body.scrollLeft
+ document.documentElement.scrollLeft;
posy = e.clientY + document.body.scrollTop
+ document.documentElement.scrollTop;
}
document.getElementById('x').innerHTML=posx;
document.getElementById('y').innerHTML=posy;
}
</script>
</head>
<div style="width:100%;background:red;height:100%" onmousemove="doSomething()"> </div>
</body>
</html>