Okay, so I'm making a flash site that's supposed to have a day/night cycle that works in real time

Right now, the plan is to have a ten frame animation play once and stop after it reached the end of the movieclip timeline when the clock hits a certain time and a movie is loaded


The problem is that whenever try testing the animation, it loops. I believe the problem is that a duplicate of the movieclip keeps attaching itself in the original's place

PHP Code:
stop();

var 
updateTime setInterval(currenttime1000);
function 
currenttime() {
    var 
today = new Date();
    var 
minutes today.getMinutes();
    var 
hours today.getHours();
    
trace(today);
    
trace(minutes);
    
trace(hours);
    var 
DAWN hours == && minutes == 00;
    var 
DAY hours == 20 && minutes == 15;
    if (
DAWN<today) {
        
attachMovie("TownEarly""TownEarly"10);
        
unloadMovie(TownDay);
        
trace("It is dawn");
    }
    if (
DAWN<DAY) {
        
attachMovie("TownDay""TownDay"10);
        
unloadMovie(TownEarly);
        
trace("It is day");
    }

Is there a way to check if a movieclip is already attached and then prevent a duplicate from taking it's place