Instance Name (with duplicated mc)

Hi all. I was wondering if it was possible to use the instance name of a duplicated movieclip in action script without having to code for every possible name of a duplicated movieclip. This is the code which duplicates the movieclips:


i = 0;
onEnterFrame = function () {
 i++;
 duplicateMovieClip(_root.circle, "circle_"+i, i);
};

Would it be possible to write something like:


if ("circle_"+i.hitTest(circle2)) {
 actions;
}

Currently I have to put the code on the movie clip which is being duplicated. Thanks in advance.