TOP /すぐに使えるJavaScript マウスポジション

<style type=text/css><!--
.yoko{
position:absolute; top:0px; left:0px;
color:red;
filter:progid:DXImageTransform.Microsoft.BasicImage(Rotation=1);
}
.tate{
position:absolute; top:0px; left:0px;
color:red;
}
--></style>
<div id="xp"class="yoko">▲</div>
<div id="yp"class="tate">▼</div>
<script type="text/javascript"><!--
function Pointer_move(NNevent){
if(document.all)
x=event.x,y=event.y;
else
x= NNevent.pageX,y= NNevent.pageY;
if(document.all){
document.all("xp").style.top=y+document.body.scrollTop;
document.all("xp").style.left=document.body.scrollLeft;
document.all("yp").style.top=document.body.scrollTop;
document.all("yp").style.left=x+document.body.scrollLeft;
}else{
document.getElementById("xp").style.top=y+"px";
document.getElementById("xp").style.left=document.body.scrollLeft+"px";
document.getElementById("yp").style.left=x+"px";
document.getElementById("yp").style.top=document.body.scrollTop+"px";
}}
document.onmousemove = Pointer_move;/* himajin.moo.jp */
// --></script>