Load Big Image

Hello!, I have a code for loading images from a directory and when user clicks in the thumb, opens the BIG Image. Here’s my code:
import caurina.transitions.Tweener;
/*
//
*/
var qtFotos:Number = 10;
for(var i=0; i<qtFotos; i++) {
var thumb:MovieClip = this[“thumb_”+i];
thumb.id = i+1;

new LoadImage(“img/acasa/”+thumb.id+“p.jpg”, thumb);

thumb.onRollOver = function() {
Tweener.addTween(this, {_xscale:90, _yscale:90, time:0.5, transition:“easeOutQuint”});
}
thumb.onRollOut = function() {
Tweener.addTween(this, {_xscale:60, _yscale:60, time:0.5, transition:“easeOutQuint”});
}
thumb.onRelease = function() {
var arquivo:String = “img/acasa/”+thumb.id+".jpg";
trace(arquivo);
new ImageViewer("", “Clique para fechar”, arquivo);
}
}

Whit that code, the thumb load but when I click the thumb always open the sampe BIG Image for all thumbs.
There’s something wrong?
Thanks.