Object Co-ordinates

Question

so ive been trying to get my button (btnPos1U) to spawn in each corner of the stage every 2 seconds. the timer works great but every time i change the co-ordinates in the math.random it seems to move the whole stage as well as the button. has any one got a fix for this? my project is due tomorrow.
the coordinates that are in there at the moment are for the bottom right, my other coordinates are
x=2.4
y=2.7
x=243.9
y=2.7
x=1.7
y=400.6
i am stumped on how to use this plotting data to tell my button where to be.
import flash.events.MouseEvent;
addChild(btnPos1U);
btnPos1U.x=btnPos1U.y=0;
var positionA:Array=[[stage.stageWidth-btnPos1U.width,0],
                     [0,stage.stageHeight-btnPos1U.height],
                     [stage.stageWidth-btnPos1U.width,0],
                     [stage.stageWidth-btnPos1U.width,stage.stageHeight-btnPos1U.height]];
var t:Timer=new Timer(2000,0);
t.addEventListener(TimerEvent.TIMER,f);
t.start();
function f(e:TimerEvent):void{
btnPos1U.visible = true
btnPos1U.x=Math.floor(Math.random()*(x=243.9))
btnPos1U.y=Math.floor(Math.random()*(y=400.6))
btnPos1U.addEventListener(MouseEvent.CLICK,g)
function g (e:MouseEvent):void
    btnPos1U.visible = false
    init();
    btnNeg1.addEventListener(MouseEvent.CLICK, EndUnlimited);
    btnNeg2.addEventListener(MouseEvent.CLICK, EndUnlimited);
    btnNeg3.addEventListener(MouseEvent.CLICK, EndUnlimited);
    btnNeg4.addEventListener(MouseEvent.CLICK, EndUnlimited);
    btnPos1U.addEventListener(MouseEvent.CLICK, on_press);
function EndUnlimited (e:MouseEvent):void
    gotoAndPlay(102);
stop();

Answer 1

this is almost certainly not what you want:
btnPos1U.x=Math.floor(Math.random()*(x=243.9))
btnPos1U.y=Math.floor(Math.random()*(y=400.6))
try:
import flash.events.MouseEvent;
// the width&height of each corner quadrant
var quadrantSize:int=100;
addChild(btnPos1U);
btnPos1U.x=btnPos1U.y=0;
var positionA:Array=[[stage.stageWidth-btnPos1U.width,quadrantSize],
                     [quadrantSize,stage.stageHeight-btnPos1U.height],
                     [stage.stageWidth-btnPos1U.width,quadrantSize],
                     [stage.stageWidth-btnPos1U.width,stage.stageHeight-btnPos1U.height]];
var t:Timer=new Timer(2000,0);
t.addEventListener(TimerEvent.TIMER,f);
t.start();
function f(e:TimerEvent):void{
var i:int=t.currentCount%positionA.length
btnPos1U.visible = true
btnPos1U.x=quadrantSize+Math.floor(Math.random()*(positionA[i][0]-quadrantSize))
btnPos1U.y=quadrantSize+Math.floor(Math.random()*(positionA[i][1]-quadrantSize))
btnPos1U.addEventListener(MouseEvent.CLICK,g)
function g (e:MouseEvent):void
    btnPos1U.visible = false
    init();
    btnNeg1.addEventListener(MouseEvent.CLICK, EndUnlimited);
    btnNeg2.addEventListener(MouseEvent.CLICK, EndUnlimited);
    btnNeg3.addEventListener(MouseEvent.CLICK, EndUnlimited);
    btnNeg4.addEventListener(MouseEvent.CLICK, EndUnlimited);
    btnPos1U.addEventListener(MouseEvent.CLICK, on_press);
function EndUnlimited (e:MouseEvent):void
    gotoAndPlay(102);
stop();