请问:加载外部图片有关问题

请教:加载外部图片问题?
在同一个文件夹有1.jpg,2.jpg,3.jpg,4.jpg,5.jpg和a.swf六个文件
我在flash中新建了一个影片元件,想动态加载一张图片
如:var   x= "1.jpg "
如何将x变量加载到这个影片元件中

------解决方案--------------------
载图片可以参考:
loadfile= "**** ";//要加载的文件
loadmc=_root.mymc;
setsize=300;

//---------代码开始------------
var my_mcl = new MovieClipLoader();
myListener = new Object();
myListener.onLoadProgress = function (target_mc, loadedBytes, totalBytes)
{
loaded=loadedBytes;
loadtotal=totalBytes;
loadds = int(loaded /loadtotal * 100);
loadtxt =int(loaded/1024) + " K / " + int(loadtotal/1024)+ " K " + loadds + "% ";
_root.loadbar.gotoAndStop(loadds);
//if(loadds==100){_root.p._visible=false}
}//end onLoadProgress
myListener.onLoadInit = function (target_mc)
{

loadmcoldw = target_mc._width;
loadmcoldh = target_mc._height;
fileoldsize = "文件宽度： " + loadmcoldw + " 高度: " + loadmcoldh;
loadv=loadmcoldh/loadmcoldw;
speed=0.1;
loadneww=setsize;
loadnewh=setsize*loadv;
filesizetxt=fileoldsize+ " 显示大小 "+ "宽: "+loadneww + " 高: "+loadnewh;
if (loadds==100){
target_mc.removeListener(myListener);
_root.mymc.onEnterFrame = function() {
_root.mymc._width+=(loadneww-_root.mymc._width)*speed;
_root.mymc._height+=(loadnewh-_root.mymc._height)*speed;
};
}
}
myListener.onLoadError = function (target_mc, errorCode) {
if (errorCode== "URLNotFound " || errorCode== "LoadNeverCompleted "){
loadtxt= "文件不存在！ ";
}//end if
} //end onLoadError
my_mcl.addListener(myListener);
my_mcl.loadClip(loadfile,loadmc);
stop();
//MovieClipLoader.removeListener()


//MovieClipLoader.unloadClip()

再加上xml或者txt就差不多了