var checkFlashLoaded = setInterval(function() { 
        if(flash.PercentLoaded =100) { 
           flash.setBGMusic("bkmusic.mp3"); 
           clearInterval(checkFlashLoaded); 
        } 
   },10);
var checkFlashLoaded = setInterval(function() {
        if(flash.PercentLoaded =100) {
           flash.setBGMusic("bkmusic.mp3");
           clearInterval(checkFlashLoaded);
        }
   },10);