怎么用flash制作按钮控制图片来回运动效果啊？？？

就是用按钮来控制MC的移动啊,比如两个按钮bt_up,bt_down控制MC的上下移动则可以写成
var movesign="";
bt_up.onPress=function(){
movesign="up";
onEnrerFrame=movemc;
}
bt_down.onPress=function(){
movesign="down";
onEnrerFrame=movemc;
}
bt_up.onRelease=bt_up.onReleaseOutside=bt_down.onRelease=bt_down.onReleaseOutside=function(){
onEnrerFrame=null;
movesign="";
}
function movemc(){
if(movesign=="up"){
mc._y--;
}else if(movesign=="down"){
mc._y++;
}
}