ActionScript 2.0 :: Dynamic Auto Run Photo Gallery

I am trying to make a photo gallery that is dynamic instead of throwing the pictures in a movie and tweening effect in between them. I know, why take the easy route. I have something really wierd going on, maybe you can help. What basically I want to happen is that when the movie loads the first image is displayed for 4 seconds then fades out as the next image is fading in. I have 11 pictures that are in a folder called "weddings". The pictures are all named "weddings0.jpg", "weddings1.jpg", "weddings2.jpg",...... "weddings10.jpg".

Here is the code for this part, I have tested and it works:
totalImages = 11;
k=0;
var aWedding = new Array;
//The for statement creates new movieClips with the images loaded and stored within
//stores the movieclips in an array.
[Code] .....

At this point I have loaded all the images into movieclips and stored their references in an array. I have also gotten them all alpha of 0 except the first image, weddings0, which I want to display first. My function to make the images scroll through doesn't work. If I trace what the alpha is as it scrolls though I get wierd numbers like 93.3233432 or 32.323223 which doesn't make sense to me because I am increasing or decreasing the alpha by += 2 or -= 2. I don't know where the functions come. Anyway, here is the code, or what I have I should say, btw

I have the code linked to a button right now to test if it works, I would like it to run automatically on load:
Code:
butt.onRelease = function(){
trace(k + " k");
tempInt = setInterval(fadeInOut, 10, aWedding[k], aWedding[k+1]);
} function fadeInOut(mcPic1, mcPic2){
[Code] .....