flash 载入的外部图片 如何可以做到LOADING预载? (0/173)

是这样的,我做的一个动画里载入了外部的3张图片
BMC01.loadMovie("1.jpg");
BMC02.loadMovie("2.jpg");
BMC03.loadMovie("3.jpg");
可以显示

可是在LOADING里发现没有预载入这张图片,每次到这帧都要停顿读取
请问有什么方法可以预读这3张图

LOADING是这样写的:


stop ();

_root . createTextField ( "myload_txt" , 1 , 0 , 0 , 0 , 0 );

with ( _root . myload_txt ) {

background = true ;

backgroundColor = 0xFFFFFF ;

textColor = 0x999999 ;

type = "dynamic"

selectable = false ;

autoSize = "center" ;

_x = Stage.width/2;

_y = Stage.height/2;

}

onEnterFrame = function () {

var Loaded = _root . getBytesLoaded ();

var Total = _root . getBytesTotal ();

_root . myload_txt . text = Math . floor (( Loaded / Total )* 100 )+ "%" ;

if ( Loaded == Total ) {

onEnterFrame = null ;

removeMovieClip ( _root . myload_txt );

play ();

}

};</CD>