Random Image Loop?

programming flash
1

I am building a project that loads 30 images in to empty movie clips. I want one of the images to apear on top randomly. What is happening now is that the first swf in my loop always shows up on top.

Here is a link to waht i am doing:
http://www.0-style.com/files/

Here is some code i am working with:

// Random range
function randRange(min:Number, max:Number):Number {
        var randomNum:Number = Math.round(Math.random()*(max-min))+min;
        return randomNum;
}

//      Load External files
for (i=1; i<=30; i++) {
        createEmptyMovieClip("img"+i+"_mc", randRange(101, 99999));
        loadMovie("images/"+i+".swf", "img"+i+"_mc");
}