如何得到table的left,top?

Question

<center><span id=test>test</span></center>
<script>
function getPosition(el) {
var l = el.offsetLeft,t = el.offsetTop;
while (el = el.offsetParent) {
l += el.offsetLeft;
t += el.offsetTop;
}
return {
"left": l,
"top": t
}
}
alert(getPosition(test).left);
alert(getPosition(test).top);
//表格一样
</script>

Answer 1

function GetDefineX(ObjectID)
{
var iPositionX=ObjectID.offsetLeft;
while(ObjectID=ObjectID.offsetParent)
{
iPositionX+=ObjectID.offsetLeft;
}
return iPositionX;
}
function GetDefineY(ObjectID)
{
var iPositionY=ObjectID.offsetTop;
while(ObjectID=ObjectID.offsetParent)
{
    iPositionY+=ObjectID.offsetTop;
}
return iPositionY;
}