how to get global (x,y) from child mc location (x,y)

Hi,

is there an easy way to translate a child's x,y into global x,y coordinates? for example mc2 is a child clip of mc1. mc2 is at 50,50 relative to mc1. what i would like to do is to be able to translate mc2's x,y to a global x,y, e.g. 50,50 in mc1 is where in the main movie.

Thanks
Sean