Dynamic mc

hey guys help,
i have this on my code layer:

function loadImages(location,image){
counter++;
var loadArea = location.createEmptyMovieClip(“container_”+counter,counter);
loadArea.loadMovie(image);
loadArea._x=500;

this.onMouseDown = function () {
startDrag (loadArea) ;
}
this.onMouseUp = function () {
stopDrag () ;
}

}

i have this on my button:

on(release){
this._parent.loadImages(this._parent,this._parent.text1.text);
}

it works fine, and if i key in hat.jpg, the hat pic will appeared. but when i wanted to load a new pic called shorts.jpg. the shorts pic will replace the hat pic.
is there any way to modify this code so i can have the hat pic untouched and load a new pic call shorts.jpg.??