On (release) action problem - how to fix the loading issue?

Question

Hi,
I'm making a progress with the website in Flash. I have pretty much things already done. Motion tweens that change alpha in percentage ammount are working correctly - I've used them for loading pages but I encountered a one tiny problem...
Describing the website: there are buttons that - when you click - play an animation (motion tween with alpha changing) to load a proper page that is pinned with a particular button. So: home button loads the home page, bio button loads the bio page etc. All pages go with the motion tween - they fade in the website (from alpha 0% to 100%). Everything is fine and the website with everything works just perfect! But: there's one thing that doesn't keep me calm. When I open my website in a browser to test it and I click on each button to load pages - everything is ok, but when I want to click the same button few times - other things are being loaded by clicking the same button.
For instance: I click the "bio" button once and it loads my biography page with the motion tween as I described before. But when I want to click it secondly or thirdly it doesn't load my biography page anymore but a page before that one (in this case: home page). When I click it again the button loads my bio page again. So - in sum - it doesn't load the same page all the time, but randomly: the proper one or the one before (in the timeline).
My AC code for each button is simple, for example:
on (release) {
    gotoAndPlay(173);
Also I've got the "actions" layer that carries stop(); command in places that are for it.
I tried with _root.gotoAndPlay and also with frame_number +1 and always the same problem.
I hope it isn't anything serrious and can be fixed.
I'll be very grateful for help.
Greets!
J.J.

Answer 1

As I explained in my post: I test my website in the browser (firefox), I click on a particular button which loads a particular section. It works with all buttons but sometimes when I click the button an incorrect section appears.
For example: I click biography button, and the biography section appears. Then I click contact button and contact section appears. Then when I want to see biography section again and click on the biography button, the biography section doesn't appear but the other section appears, for instance: home section, about section, gallery section or other from what I have.
Concluding from the entire description I've placed above in the topic I don't know why this thing happens and I need some help how to fix this issue of loading sections firstly correct and then, after some clicking - incorrect.
I hope I really presented it clearly.