stop(); don't stop in Flash CS4 - AS 3.0

[macdalor]

Hi there,
I am completely new to flash and I'm trying to build a "relatively simple" animated website, managed to create everything (buttons, tweens, pages content etc...) but somehow when I test the movie the tweens don't stop, even though I put a stop in a keyframe at the end of the tween.

the tweens are a rectangle which opens up from the center and should stop when open so that text can be added in

this is the code I inserted

btn_home.addEventListener(MouseEvent.CLICK, homeCLICK);
btn_aboutus.addEventListener(MouseEvent.CLICK, aboutusCLICK);
btn_music.addEventListener(MouseEvent.CLICK, musicCLICK);
btn_contact.addEventListener(MouseEvent.CLICK, contactCLICK);
 
function homeCLICK(e:MouseEvent):void
{
    gotoAndStop("home");
}
 
function aboutusCLICK(e:MouseEvent):void
{
    gotoAndStop("aboutus");
}
 
function musicCLICK(e:MouseEvent):void
{
    gotoAndStop("music");
}
 
function contactCLICK(e:MouseEvent):void
{
    gotoAndStop("contact");
}
 

and I have also attached a copy of the timeline

please help
thx