More than one function in a button?

Question

Hi, I have created a button that moves around automaticly, and made it so that you also can steere the button when holding the button in och dragging it.
What I want is:
1. Having 4 buttons that move arround automaticly.
2. Have a text that will turn up dragging the mouse over the buttons
4. With a mouseclick manage to stop the automatic movement
3. Have the butons linket to each URL site which will be reached with a double click.
Do anyone know how I´ll manage this?Where do I put the codes? In ActionScipt over all the buttons or within each button?
Please help
Thanks
The automaticly movement is already done.
All the buttons is made into MovieClips, and withon them the buttons are "Buttons". Within the buttons are this code:
acceleration = 30
newpos = function () {
    ranx = Math.round((Math.random ()*755));
    rany = Math.round ((Math.random ()*755));
newpos();
this.onEnterFrame = function() {
    this._y += ((rany-this._y)/acceleration);
    this._x += ((ranx-this._x)/acceleration);
    if (Math.round(this._x) == ranx || Math.round(this._y) == rany) {
        newpos();
Free draggning arround.
This code is for all the objects in the outmost layer.
squarepos_so = SharedObject.getLocal("positions");
xx.text = boll1._x = squarepos_so.data.x;
yy.text = boll1._y = squarepos_so.data.y;
boll1.onPress = function () {
boll1.startDrag(false)
boll1.onRelease = boll1.onReleaseOutside = function(){
   boll1.stopDrag();
    xx.text = squarepos_so.data.x = boll1._x;
    yy.text = squarepos_so.data.y = boll1._y;
   squarepos_so.flush();

Answer 1

thank you very much, I think I got it!
Now the only problem I have left is to have a text to show up at "MouseOver" of each button.
Do you know how it´s done. I know that you can do it within a button in the "UPP, OVER, DOWN and HIT timeline.
But that doesn´t work because then all the other effects disappear
Am I going to put a code like: on each button (or within each button) or over a ActionScript-frame for all the buttons
on (MouseOver) {
           button1. something(I dont know)?
on (MouseOver) {
           button2. something(I dont know)?
etc..