ActionScript: How to Re- setInterval Each Time Function Works?

Question

I have a function that draws a rectangle on the screen (see createInfoPanel())
While drawing rectangle, I am adding 2 text fields on it.
But as you may guess, it is adding those immediately.
I want to delay adding these text fields, then I want to remove these panels after a while.
The problem is, when I set an interval or timer, they won't work after I using once (I had to stop them by clearing/removing, it didn't set them again).
Since my panel is being created each time image changes, I need them to work every time image changes.
So, I have 2 questions:
1- How can I re-set interval each time my createInfoPanel() function works? It won't work anymore after setting and claring once. 
2- You can see infoPanel.addChild(titleField); line in addInfoPanel() function. How can I work a smooth animation here? I mean, text appears slowly? 
Thanks in advance.
Code file:
public class ImageRotator extends Sprite
private var ... ; //Some variables
public function ImageRotator(xmlPath:String = "images.xml", interval:int = 8301):void
    timer = new Timer(interval);
    loadXML(xmlPath);
private function loadXML(file:String):void
    urlLoader = new URLLoader(new URLRequest(file));
    urlLoader.addEventListener(Event.COMPLETE, parseXML);
private function parseXML(e:Event):void
    xml = new XML(e.target.data);
    loadImages();
private function loadImages():void
    for (var i:int = 0; i < xml.children().length(); i++)
        var loader:Loader = new Loader();
        loader.load(new URLRequest(xml.children()[i].@src));
        imagesVector.push(loader);
        loader.contentLoaderInfo.addEventListener(Event.COMPLETE, sortImages);
private function sortImages(e:Event):void
    imagesCounter++;
    for (var i:int = 0; i < imagesVector.length; i++)
        imagesVector.reverse();
        addChild(imagesVector[i]);
    //I have only 3 images, I needed to set indexes because
    //they were covering each other
    this.setChildIndex(imagesVector[2], 0);
    this.setChildIndex(imagesVector[1], 0);
    this.setChildIndex(imagesVector[0], 0);
    if (imagesCounter == imagesVector.length)
        createInfoPanel();
        timer.addEventListener(TimerEvent.TIMER, autoChange);
        timer.start();
private function createInfoPanel():void
    infoPanel.graphics.beginFill(0x000000, 0.0);
    infoPanel.graphics.drawRect(0, 0, 967, 138);
    infoPanel.graphics.endFill();
////Here I want to run addInfoPanel() function with 2 seconds delay,
////After it starts, I want to run removeInfoPanel() function with 2 more seconds delay
    addChild(infoPanel);
private function addInfoPanel():void {
    titleField.text = xml.children()[infoCounter]. @ title;
    titleField.x = 425;
    titleField.y = 0;
    description.text = xml.children()[infoCounter]. @ description;
    description.x = 427;
    description.y = 26;
    infoPanel.y = 300;
    infoPanel.addChild(titleField);
    infoPanel.addChild(description);
private function removeInfoPanel():void {
    infoPanel.removeChild(titleField);
    infoPanel.removeChild(description);
private function addActions():void
    //Some function
private function changeImage(e:MouseEvent):void
    //Image changing function
private function changeDepth(e:TweenEvent):void
    //Some function
private function autoChange(e:TimerEvent):void
    //Some function
Edit: How I used to work the intervals:
private function createInfoPanel():void
    //lines above code sample
    intervalInfoPanel = setInterval(addInfoPanel,2000);
    addChild(infoPanel);
private function addInfoPanel():void {
    //lines above code sample
    clearInterval(intervalInfoPanel);
    intervalInfoPanelRemove = setInterval(removeInfoPanel,3500);
private function removeInfoPanel():void {
    //lines above code sample
    clearInterval(intervalInfoPanelRemove);

Answer 1

Hi,
No, no debug/runtime, I also export my movieclip.
Here's how I use:
import com.greensock.*;
private function sortImages(e:Event):void
    imagesCounter++;
    for (var i:int = 0; i < imagesVector.length; i++)
    imagesVector.reverse();
    addChild(imagesVector[i]);
    if (imagesCounter == imagesVector.length)
    createInfoPanel();
    timer.addEventListener(TimerEvent.TIMER, autoChange);
    timer.start();
private function createInfoPanel():void
    infoPanel.graphics.beginFill(0x000000, 0.0);
    infoPanel.graphics.drawRect(0, 0, 967, 138);
    infoPanel.graphics.endFill();
    addInfoPanel();
    addChild(infoPanel);
private function addInfoPanel():void {
    infoPanel.y = 300;
    titleField.text = xml.children()[infoCounter]. @ title;
    titleField.x = 425;
    titleField.y = 0;
    description.text = xml.children()[infoCounter]. @ description;
    description.x = 427;
    description.y = 26;
    titleField.alpha = 0;
    TweenLite.to(titleField, 1.0, { alpha: 1 });
    description.alpha = 0;
    TweenLite.to(description, 1.0, { alpha: 1 });
Nothing appears...