效果如下：
代码(全部写在帧上):
fscommand("allowscale","false")
_root.picture.setMask(_root.big_glass.pian);
_root.shuru.onChanged=function(){
_root.picture._xscale=n*100;
_root.picture._yscale=n*100;
}
_root.big_glass.onPress=function(){
this.startDrag();
drag=true;
}
_root.big_glass.onRelease=function(){
stopDrag();
drag=false;
}
_root.big_glass.onEnterFrame=function(){
if(drag=true){
_root.picture._x=-_root.big_glass._x*(_root.n-1);
_root.picture._y=-_root.big_glass._y*(_root.n-1);
}
}
_root.big_glass.onMouseMove=function(){
updateAfterEvent();
}