спасибо, за подсказки, разобрался вот код может пригодиться кому:

Код AS3:
var stageWidth:Number = 1024;
var stageHeight:Number = 768;
var speed2:Number = 30;
var mc2Width = back_mc.width;
var mc2Height = back_mc.height;
var mc2X = back_mc.x;
var mc2Y = back_mc.y;
lock_scroll = false;
stage.addEventListener(Event.ENTER_FRAME, func_scroll);
function func_scroll (e:Event)
{
scroll_mc();
scroll_mcy();
}
function scroll_mc() {
var xdist = mouseX-(stageWidth/2);
mc2X += -xdist/speed2;
if (mc2X>=0) {
mc2X = 0;
}
if (mc2X<=stageWidth-mc2Width) {
mc2X = stageWidth-mc2Width;
}
back_mc.x = mc2X;
}
function scroll_mcy() {
var xdist = mouseY-(stageHeight/2);
mc2Y += -xdist/speed2;
if (mc2Y>=0) {
mc2Y = 0;
}
if (mc2Y<=stageHeight-mc2Height) {
mc2Y = stageHeight-mc2Height;
}
back_mc.y = mc2Y;
}