[sigur]

var page:int = 1;
next_btn.addEventListener(MouseEvent.CLICK, next2);
function next2(Event:MouseEvent):void {
page+=1;
trace (page);
}
var mcFront;
var mcBack;

var mcFront1:PictureClip1 = new PictureClip1();
var mcBack1:PictureClip1 = new PictureClip1();
var mcFront2:PictureClip2 = new PictureClip2();
var mcBack2:PictureClip2 = new PictureClip2();

if (page == 1) {
mcFront = mcFront1;
mcBack = mcBack1;
}

if (page == 2) {
mcFront = mcFront2;
mcBack = mcBack2;
}

не работает

Добавлено через 35 минут
Все ок. Спасибо!