PREloading a few of jpg's

Anyone that can help me with as for preloading a few jpg’s in duplicated movieclips?
//array with pic names.
names = (“pic01.jpg”,“pic02.jpg”,“pic03.jpg”, “pic04.jpg”);
l = names.length;
for (i=0; i<n;i++){
duplicateMovieClip(“holder”, “holder”+i, i++);
_root[“holder”+i].loadMovie(names*);
_root[“holder”+i]._alpha = 0;
// ?? preload function ?? //
}

tnx in advantage!