<script>var mouseX;
var mouseY;var get_mouse_location=function(e){ if(document.all){ //in IE
mouseX=event.x+document.body.scrollLeft;
mouseY=event.y+document.body.scrollTop;
}else{
mouseX=e.pageX;
mouseY=e.pageY;
} document.getElementById("x").value=mouseX;
document.getElementById("y").value=mouseY;}</script><body>
<div id="content" style="width: 100%; height: 500px;" onmousemove="get_mouse_location(event)">
<input type="text" id="x" />
<input type="text" id="y" />
</div>
</body>give you a example