Mi sa che lo script che c'é prima non é tanto compatibile con questa soluzione che pur sembra giusta:

te lo posto tutto:

// set the scale mode of this movie
Stage.scaleMode = "noScale";
Stage.align = "TL";

// load the xml and goto startSlideShow() after
var images_xml:XML = new XML();
images_xml.onLoad = startSlideShow;
images_xml.load("slideshow_images.xml");
images_xml.ignoreWhite = true;

// some global settings
var settings:Object;
var images:Array;
var images_count:Number;
var images_needed:Number;

var images_active:Array = new Array();
var images_letzteNr:Number;
var images_ersteNr:Number = 0;

var max_r:Number;
var min_l:Number;

// the speed according to the mouse-x-position
var pos_speed:Number = -0.1;

// the depth of the objects
var d = 1;

// this is the invisible square inside witch the images are placed
// (default value 140, can be set in the xml)
var a = 140;

// der Interval
var bewegeInterval;

function startSlideShow(success){
if (success == true) {
var p:XMLNode = images_xml.firstChild;
settings = p.firstChild.attributes;
images = p.lastChild.childNodes;
images_count = images.length;

a = Number(settings.a);

var x = 0;
var i = 0;

// we need at least one image
var sw = Math.max(a,Stage.width);

while(x < sw){
// draw the image
var imageNumber = i % images_count;

// load the image and register
images_active.push(createImage(imageNumber,i*a));

// finally cache the current image number
images_letzteNr = imageNumber;

i++;
x += a;
max_r = x;
min_l = 0;
}

// store the number of images
images_needed = i;
}

// interval
bewegeInterval = setInterval(slide, Number(settings.delay), Number(settings.step));
}

function slide(stp:Number){
// moves all images

stp = Math.round(stp * pos_speed);

min_l += stp;
max_r += stp;
/*
trace("x-bounds: " + min_l + " - " + max_r);
trace("nr-bounds 0: " + images_ersteNr + " - " + images_letzteNr);
*/

var len = images_active.length;

var new_images_active = new Array();

for(var k = 0; k < len; k++){

var b:MovieClip = images_active[k];
b._x += stp;
// trace(b + ": x=" + b._x + ", max_r=" + max_r);

if(b._x <= -a){
// trace("unload left");
b.unloadMovie();
min_l += a;
images_ersteNr = (images_ersteNr + 1) % images_count
}
else if(b._x > Stage.width){
// trace("unload right");
b.unloadMovie();
max_r -= a;
images_letzteNr = (((images_letzteNr - 1) % images_count) + images_count) % images_count;
}
else {
// behalten
new_images_active.push(b);
}

if(max_r < Stage.width){
// trace("create right");
imageNumber = (images_letzteNr + 1) % images_count;
new_images_active.push(createImage(imageNumber,max _r));
images_letzteNr = imageNumber;
max_r += a;
}
if(min_l > 0){
// trace("create left");
imageNumber = (((images_ersteNr - 1) % images_count) + images_count) % images_count;
new_images_active.unshift(createImage(imageNumber, min_l - a));
images_ersteNr = imageNumber;
min_l -= a;
}
}

// trace("nr-bounds 1: " + images_ersteNr + " - " + images_letzteNr);
images_active = new_images_active;

// update...
updateAfterEvent();
}

function createImage(imageNumber:Number, x:Number):MovieClip{
var bildObj = images[imageNumber].attributes;

var bildBreite = Number(bildObj.width);
var bildHoehe = Number(bildObj.height);

var bildX = Math.round(a - bildBreite)/2;
var bildY = Math.round(a - bildHoehe)/2;

var container = _root.createEmptyMovieClip("bild" + d,d);
container._x = x;

// depth for the next movieclip
d++;

// we put two images inside that container: one for the border and the image itself
var rahmen:MovieClip = container.attachMovie("box","rahmen",1);
var c = new Color(rahmen);
c.setRGB(settings.bordercolor);

rahmen._width = bildBreite + 2;
rahmen._height = bildHoehe + 2;

rahmen._x = bildX - 1;
rahmen._y = bildY - 1;

// the event handler is set to the border
if(bildObj.big_src != undefined) rahmen.onRelease = function(){fscommand("openWindow","src="+bildObj.b ig_src+"&width="+bildObj.big_width+"&height="+bild Obj.big_height);}

var bild = container.createEmptyMovieClip("bild",2);
loadMovie(bildObj.src, bild);

bild._x = bildX;
bild._y = bildY;

return container;
}

this.onMouseMove = function(){
pos_speed = -Math.round(10 * ((2*_xmouse)-Stage.width)/Stage.width) / 10;
}


In grassetto la funzione incriminata!