Ecco qui il codice incriminato!!!!

Stage.scaleMode = "noScale";
labels = ['PROVA1', 'PROVA2', 'PROVA3', 'PROVA4'];
// posizione
x = 60;
y = 25;
// distanza tra ogni mc
dist = 5;
// larghezza al rollOver e velocità di apertura
openWid = 115;
speed = 5;
MovieClip.prototype.scala = function(w, vel) {
vel = w>this._width ? vel : -vel;
this.onEnterFrame = function() {
if (this._width == w) {
delete this.onEnterFrame;
} else {
this._width = (Math.abs(this._width-w)>Math.abs(vel)) ? this._width+vel : w;
}
mc0._x = x;
this._parent.visited._x = this._width-mcWid;
for (i=1; i<labels.length; i++) {
_root['mc'+i]._x = _root['mc'+(i-1)]._x+_root['mc'+(i-1)]._width+dist;
}
};
};
obj = {};
obj.onRollOver = function() {
this.bt.gotoAndStop('over');
_root[temp].bt.scala(mcWid, speed);
this.bt.scala(openWid, speed);
path = this;
clearInterval(id);
_root[temp].txt.text = '0'+(Number(_root[temp]._name.substring(2))+1);
clearInterval(pausa);
pausa = setInterval(function () {
randomChar(path.txt, labels[path._name.substring(2)]);
clearInterval(pausa);
}, 200);
};
obj.onRollOut = function() {
clearInterval(pausa);
clearInterval(id);
this.bt.gotoAndStop('up');
_root[temp].bt.scala(openWid, speed);
this.bt.scala(mcWid, speed);
pausa = setInterval(function () {
randomChar(_root[temp].txt, labels[_root[temp]._name.substring(2)]);
clearInterval(pausa);
}, 200);
this.txt.text = '0'+(Number(this._name.substring(2))+1);
};

obj.onRelease = function() {
_root[temp].txt.text = '0'+(Number(_root[temp]._name.substring(2))+1);
_root[temp].bt.gotoAndStop('up');
_root[temp].enabled = true;
_root[temp].bt.scala(mcWid, speed);
//_root[temp].loadMovie (labels[path._name.substring(2)] + ".swf","_root.ex-swf"); questo è quello che mi fa dannare!
this.enabled = false;
temp = this._name;
this.visited._visible = true;

};
for (i=0; i<labels.length; i++) {
attachMovie('mc', 'mc'+i, i, obj);
mcWid = mc0.bt._width;
this['mc'+i]._x = i*(mcWid+dist)+x;
this['mc'+i]._y = y;
this['mc'+i].txt.text = '0'+(i+1);
this['mc'+i].txt.autoSize = true;
this['mc'+i].visited._visible = false;

}