Loading external SWF over top of the previous

hi..

 

i have slideshow loads multiple swfs on button click , automatically.. i"m trying rid of white flash right after prev swf unloads , before new swf lods. tried moving removechild(loader); after loading function of next swf doesn't work.. can point me in reight direction please? effect i"m trying achieve:

 

http://www.catgenie.com/

 

and code i'm working now. ahead of time:

 

//import classes easier use
import fl.transitions.tween;
import fl.transitions.tweenevent;
import fl.transitions.easing.*;

 

//timer
var slideduration:uint = 8000;  // or use whatever
var slidetimer:timer=new timer(slideduration,0);
slidetimer.addeventlistener(timerevent.timer,autoadvancef);
slidetimer.start();

 

var btna:array = [one_btn,two_btn,three_btn];
var previousbtn:simplebutton = one_btn // use class type of buttons

 

function autoadvancef(e:timerevent):void{
nextbuttonf(previousbtn).dispatchevent(new mouseevent(mouseevent.click));
}

 

function nextbuttonf(btn:simplebutton):simplebutton{ // use class type of buttons
for(var i:uint=0;i<btna.length;i++){
if(btna[i]==btn){
return btna[(i+1)%btna.length];
}
}
return null;
}

//load external swf main
var xpos:number = 0;
var ypos:number = 0;
var swf:movieclip;
var loader:loader = new loader();

 

 

 

var defaultswf:urlrequest = new urlrequest("swfs/one_btn.swf");

 

 

 

loader.load(defaultswf);
loader.x = xpos;
loader.y = ypos;
addchildat(loader,0);

 

 

 

//btns universal function (whenver button clicked, loader removed

 

 

 

function btnclick(event:mouseevent):void {

 

slidetimer.reset();

 

slidetimer.start();

 

    previousbtn = simplebutton(event.currenttarget);
    removechild(loader);
   
    var newswfrequest:urlrequest = new urlrequest("swfs/" + event.target.name + ".swf");
    var mytween:tween = new tween(loader, "alpha", none.easein, 0, 2, 1, true);
   
    loader.load(newswfrequest);
    loader.x = xpos;
    loader.y = ypos;
    addchildat(loader,0);

 

}

 

/// button listerners
one_btn.addeventlistener(mouseevent.click,btnclick);
two_btn.addeventlistener(mouseevent.click,btnclick);
three_btn.addeventlistener(mouseevent.click,btnclick);

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