actionscript 3 - How to cascade pop up windows (i.e. offset the X and Y position) in a Flex application? -

i have simple flex (flash builder) application pops new window when user clicks on map. user can make subsequent clicks on map have additional pop windows appear, each of pop on top of initial/previous pop window(s) (i.e. @ same x , y position). want modify application in such way each new pop window rendered offset previous pop window. coworker has suggested try find way leverage existing window cascading functionality in flex, far i've not found can manage you. there such solution cooked flex already, or should roll own calculating new pop window's x , y position based on last pop window's x , y position?

thanks in advance suggestions.

--james

in popup function can read x , y position of pop-up user clicked on , change x , y position of new pop-up adding 5 or 10px each one.