Eval() problem in actionscript 3.0

Question

Hey, im re coding my old web site from AS2 to AS3 but im strugeling with the eval() function.
The eval() converts my string to a object witch is passed to my function, but now AS3 doesnt support the eval() function any more.
Kan anyone help me. . .
var pageName:String = "home_mc";
var currentPage:String = "home_mc";
//---------BUTTON FUNCTIONS---------\\
function rollover(movieName) {
if (currentPage != movieName) {
  eval(moviename).gotoAndPlay("_in");
function rollout(movieName) {
if (currentPage != movieName) {
  eval(moviename).gotoAndPlay("_out");
function stick(movieName) {
if (currentPage != movieName) {
  eval(moviename).gotoAndPlay("_out");
currentPage = movieName;
eval(moviename).gotoAndPlay("_stick");
button_mc.addEventListener(MouseEvent.MOUSE_OVER, rollover);
button02_mc.addEventListener(MouseEvent.MOUSE_OVER, rollover);
button03_mc.addEventListener(MouseEvent.MOUSE_OVER, rollover);
button04_mc.addEventListener(MouseEvent.MOUSE_OVER, rollover);
button_mc.addEventListener(MouseEvent.MOUSE_OUT, rollout);
button02_mc.addEventListener(MouseEvent.MOUSE_OUT, rollout);
button03_mc.addEventListener(MouseEvent.MOUSE_OUT, rollout);
button04_mc.addEventListener(MouseEvent.MOUSE_OUT, rollout);
//----------------------Button  End ---------------------\\
//---------Page functions--------------------\\
function animateOff(page:String):void
eval(page).gotoAndPlay("_out");
function animateOn(page:String):void
eval(page)gotoAndPlay("_in");
//----------------------Page End ---------------------\\
//---------Button OnRealese Functions-------------------\\
button_mc.addEventListener(MouseEvent.MOUSE_DOWN, mouseClick01);
function mouseClick01(Event:MouseEvent):void
   if (pageName != "home_mc")
      stick("button_mc");
   animateOff(pageName);  
   animateOn("home_mc");
   pageName = "home_mc";
//---------------------------END----------------------\\

Answer 1

Hey, ive tried the this[movieClip].gotoAndPlay("_in")
But i get this error as soon as i click, hove over or roll out:
TypeError: Error #1009: Cannot access a property or method of a null object reference.
at ProactiveMedicServices_fla::MainTimeline/loading()
TypeError: Error #1010: A term is undefined and has no properties.
at ProactiveMedicServices_fla::MainTimeline/rollover()
TypeError: Error #1010: A term is undefined and has no properties.
at ProactiveMedicServices_fla::MainTimeline/rollout()
TypeError: Error #1010: A term is undefined and has no properties.
at ProactiveMedicServices_fla::MainTimeline/rollover()
TypeError: Error #1010: A term is undefined and has no properties.
at ProactiveMedicServices_fla::MainTimeline/animateOff()
at ProactiveMedicServices_fla::MainTimeline/mouseClick02()
TypeError: Error #1010: A term is undefined and has no properties.
at ProactiveMedicServices_fla::MainTimeline/rollout()
TypeError: Error #1010: A term is undefined and has no properties.
at ProactiveMedicServices_fla::MainTimeline/rollover()
TypeError: Error #1010: A term is undefined and has no properties.
at ProactiveMedicServices_fla::MainTimeline/animateOff()
at ProactiveMedicServices_fla::MainTimeline/mouseClick01()
This is my new code afer i aplied the answers:
var pageName:String = "home_mc";
var currentPage:String = "home_mc";
//var movieName = ;
//stick("button_mc");
button_mc.addEventListener(Event.ENTER_FRAME , nameButtons);
function nameButtons(event:Event):void
var num1:Number = 1;
button_mc.t1_mc.gotoAndStop(num1);
var num2:Number = 2;
button02_mc.t1_mc.gotoAndStop(num2);
var num3:Number = 3;
button03_mc.t1_mc.gotoAndStop(num3);
var num4:Number = 4;
button04_mc.t1_mc.gotoAndStop(num4);
  var page2 = 2;
  var page3 = 3;
  var page4 = 4;
  ser_mc.ti2_mc.gotoAndStop(page2);
  rev_mc.ti2_mc.gotoAndStop(page3);
     con_mc.ti2_mc.gotoAndStop(page4);
     home_mc.gotoAndPlay(19);
  //trace(pageName)
//---------BUTTON FUNCTIONS---------\\
//---------BUTTON FUNCTIONS---------\\
function rollover(movieName) {
if (currentPage != movieName) {
  this[movieName].gotoAndPlay("_in");
function rollout(movieName) {
if (currentPage != movieName) {
  this[movieName].gotoAndPlay("_out");
function stick(movieName) {
if (currentPage != movieName) {
  //var buttonTest:Object = movieName;
  this[movieName].gotoAndPlay("_out");
currentPage = movieName;
//var buttonTest:Object = movieName;
this[movieName].gotoAndPlay("_stick");
/*function rollover1(event:MouseEvent):void
  button_mc.gotoAndPlay("_in");
function rollover2(event:MouseEvent):void
  button02_mc.gotoAndPlay("_in");
function rollover3(event:MouseEvent):void
  button03_mc.gotoAndPlay("_in");
function rollover4(event:MouseEvent):void
  button04_mc.gotoAndPlay("_in");
function rollout1(event:MouseEvent):void
  button_mc.gotoAndPlay("_out");
function rollout2(event:MouseEvent):void
  button02_mc.gotoAndPlay("_out");
function rollout3(event:MouseEvent):void
  button03_mc.gotoAndPlay("_out");
function rollout4(event:MouseEvent):void
  button04_mc.gotoAndPlay("_out");
button_mc.addEventListener(MouseEvent.MOUSE_OVER, rollover);
button02_mc.addEventListener(MouseEvent.MOUSE_OVER, rollover);
button03_mc.addEventListener(MouseEvent.MOUSE_OVER, rollover);
button04_mc.addEventListener(MouseEvent.MOUSE_OVER, rollover);
button_mc.addEventListener(MouseEvent.MOUSE_OUT, rollout);
button02_mc.addEventListener(MouseEvent.MOUSE_OUT, rollout);
button03_mc.addEventListener(MouseEvent.MOUSE_OUT, rollout);
button04_mc.addEventListener(MouseEvent.MOUSE_OUT, rollout);
function animateOff(page:String):void
this[page].gotoAndPlay("_out");
//trace(pageName);
function animateOn(page:String):void
this[page].gotoAndPlay("_in");
button_mc.addEventListener(MouseEvent.MOUSE_DOWN, mouseClick01);
function mouseClick01(Event:MouseEvent):void
   if (pageName != "home_mc")
   //home_mc.gotoAndPlay("_in");
      //stick("button_mc");
   animateOff(pageName);  
   animateOn("home_mc");
   pageName = "home_mc";