those circle buttons do appear to be arrange along the
perimeter of a circle. and if they are to be animated to along that
circles perimeter it would be easiest to attach them all to a
movieclip who's registration point is that circle's center.
then just apply a positive rotation to the movieclip when the
mouse is above your swfs mid _y value and apply a negative rotation
to the movieclip when your mouse is below that mid _y value. vary
the speed of rotation depending upon how far the _ymouse property
is from that mid _y value and your done animating your
buttons.