My Timer is Broke, please help :)

programming flash
1

Can someone tell me why my pages fade in the first time through, but then doesnt wait when called again?

function fadePageIn () {
    
    var fadespeed = 5;
    
    function wait() {               
    
    _root.pages.onEnterFrame = function() {
            if (_root.pages._alpha<100) {
                _root.pages._alpha += fadespeed;
            } 
     }
     
    clearInterval(myTimer);  
    }
    
    myTimer = setInterval(wait, 2000);  
    
};

Thanks!
Rich