I don't have the .fla file on this computer but I did manage to find a tutorial with similar action script. The water effect in my scene is what would be reflected if no rippling was occurring (or what ever you wish rippling) and the AS action applied. Mess with the values of:
perlinOffset.x +=1; perlinOffset.y +=0.1;
Decreasing the values will produce small ripples, I believe. Hope that helps!