Infinite scroller from limited scroller

1

Hi,
I have this code for this movie http://adiv.home.ro .What I need to add (or remove) to make it infinite ?

xmouse = _xmouse-(widthmovie/2)-155;
speed = (xmouse)/scrollspeed;
if (speed<0) {
speed = -(speed);
}

if (xmouse<0) {
xphoto = xphoto+speed;
}

if (xmouse>0) {
xphoto = xphoto-speed;
}

if (xphoto>0) {
xphoto = 0;
}

if (xphoto<-(widthphoto-widthmovie)) {
xphoto = -(widthphoto-widthmovie);
}
setProperty(“photo”, _x, xphoto);

Thanx