Scrollpane tweaking so it always shows up

1

Here is my code so far:


stop();
//
this.createClassObject(mx.containers.ScrollPane, "my_sp", 10);
//
var spListener:Object = new Object();
spListener.complete = function(success:Boolean){
 if (success) {
  sbtracker = true;
 }
}
my_sp.addEventListener("complete", spListener);
//
this.onEnterFrame = function () {
 if (sbtracker == true) {
  delete this.onEnterFrame;
  my_sp._visible = true;
  my_sp.refreshPane();
  my_sp.invalidate();
 }
};
//
my_sp.setSize(314, 314);
my_sp.setStyle("borderStyle", "none");
my_sp.hScrollPolicy = "off";
my_sp._visible = false;
my_sp.contentPath = "vids.swf";

[FONT=Courier New]
now 1/20 times it won’t show up (the scrollpane) instead of 1/4…any suggestions??[/FONT]