怎样设置弹出窗口的相对位置~！

Question

取触发事件的控件的座标及长宽,再设置要弹出窗口的位置(没做过,只这么想)

Answer 1

                      
<input type=button onclick="PopWindow()" id="PopButton">
<script>
function PopWindow()
{
window.open("about:blank","","top="+GetDefineY(PopButton)+" left="+GetDefineX(PopButton)+" width=100 height=100");
}
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;
}
</script>