position() question

position() question

You know that when an element has position absolute, it does not necessary mean that its position is from top and left of the page.
For example, if I have a situation like this one:
<div style="position:relative;top:100px;left:100px;">
    This text is not visible
     <div id="nested" style="position:absolute;top:0px;left:0px;height:100px;background-color:#FFF;">
        Hello relatively absolute position
     </div>
</div>
The nested div with absolute position will be positioned at the top left corner of its parent with relative position.
As summary, this is my question:
is it an expected behavior that $("#nested").position() is {top:0, left:0} ?
Is there any chance jQuery will introduce a boolean argument to calculate the real position of an element with or without "position:static" convention ?
In my case it would be useful for drawing functionality with spread elements inside floating containers ...
Regards