Javascript 获取一个对象在页面中的位置坐标
<script language="javascript" type="text/javascript" >
function getXY(Obj)
{
var h = Obj.offsetHeight;
for (var sumTop=0,sumLeft=0;Obj!=document.body;sumTop+=Obj.offsetTop,sumLeft+=Obj.offsetLeft, Obj=Obj.offsetParent);
sumTop = h+sumTop;
return {left:sumLeft,top:sumTop}
}
</script>
