How do I get the position of the selected PathItem in pixels ?

Hi,

I have a simple problem, but can't seem to find my way around it:

I have PathItem and Illustrator points out that it is at position (781px,250px).

How can I get those values in jsx ?

I've noticed that the PathItem inherits the position property from PageItem, and position

is a point, but when I try prining the values, I get undefined:

$.writeln(app.activeDocument.selection[0].position.x);

If I leave out .x from the line above I get this printed in the console:

521,510

What are these values ? Are they x,y coordinates ? In what unit ? How can I convert to pixels ?

Why can I not access x,y/top,left properties (always get undefined) ?

I'm using Illustrator CS5.