In my page, latitude, longitude and info window content are present in an array of objects named obj.
So if I need the latitude of property of the 1st object, I can
BGerrissen's comment above helped a lot.
I managed to achieve function closure on the info variable.
The following Google Groups post explains how to.
https://groups.google.com/group/google-maps-api-for-flash/browse_thread/thread/befeb9bf2d1ebcc9
Thanks everyone :)