If this is loaded dont load is again!

1

Hi fellow Kirupians!

So i’m using xml and flash. After the images have been defined.
I use this code to load them:

MovieClip.prototype.buildFunctions = function() {
this.onPress = function() {
mcIcontainer._alpha = 0;
mcPreloader.gotoAndPlay(2);
mcIcontainer.loadMovie(this.image);
this.mcContainer.xmlThumb.btItem.gotoAndStop(20);
txtDesc.text = this.desc;
this.onRollOver = false;
};
this.onRollOver = function() {
frameNumber = this.mcContainer.xmlThumb.btItem._currentframe;
if (frameNumber>=20) {
this.mcContainer.xmlThumb.btItem.gotoAndStop(20);
info.text = this.cname;
} else {
this.mcContainer.xmlThumb.btItem.gotoAndPlay(2);
txtInfo.text = this.cname;
}
};
};

So my problem is how can i stop it from loading what has already been loaded in the container.