codice:
SX=100
DX=300
TY=100
BY=300

palla.onEnterFrame=function(){
	if(_level0._xmouse > SX && _level0._xmouse < DX){
	this._x=_level0._xmouse
	}
	if(_level0._ymouse > TY && _level0._xmouse < BY){
	this._y=_level0._ymouse
	}
	
}