Ruby Forum Rails Spinoffs > getting element coordinate and save it in database

i'm using draggable function with script.aculo.us and rails. The
problem here is how can i get the corrdinate of the element being drag
and store it in database because i want to allow user who drag the
element to save the current coordinate when they finish drag the
element. So when they reload the window, the element will appear at
the last position they being drag.Thanks for your help