IDE :: Multiple Buttons Don't Work

I'm designing a website for a Reiki/Spiritual advisor thingymebob and I have a menu on the left of my page of buttons and when I click a button it displays the contents of the button on the stage. Easy enough, so to speak, but the code I have written should send the viewer to a certain frame in the timeline where the tween begins.

When I play the swf and click the home button it works perfectly on the first page and if I go down the menu and click every other button in order they too all work fine, but as soon as I start clicking any other button randomly there is no tween effect and it seems to send me to the wrong page(!) plus straight to the clear text on the stage without any fading in tween. As though it has just gone to the last frame of the tween.

Here's the code below. I've asked the spiritual advisor for guidance and he sent me here, so please prove him right - ha ha!

stop();
myHome.addEventListener(MouseEvent.MOUSE_DOWN,
mouseDownHandler2);
function mouseDownHandler2(event:MouseEvent):void {
gotoAndPlay(281);

[code]....