I've been working with the new drag and drop framework for a little while now.  Currently I have a need for the mouse coordinates whenever the item is dropped.  Normally I would just throw a onmouseup event and grab the coordinates that way.  However, for some reason that event never fires when I have a drag and drop item attached to the mouse.  

Also I tried using evntArgs.get_x() and evntArgs.get_y() from inside the DropHandler method.  This threw the Object doesn't support this property or method error.

function dropHandler(source, evntArgs)

{   

            var tmpx = evntArgs.get_x();

            var tmpy = evntArgs.get_y();

}

Any help here would be much appreciated.  Thank you for your time.