Convert AS2 class to AS3 class ... please

is there a way to convert this AS2 class …


// special thanks to Robert Penner (www.robertpenner.com) for providing the
// original code for this in ActionScript 1 on the FlashCoders mailing list

dynamic class com.darronschall.DynamicRegistration {
    
    private function DynamicRegistration() {
        
    }
    
    public static function initialize(target_mc):Void {
        var p = _global.com.darronschall.DynamicRegistration.prototype;
        target_mc.xreg = 0;
        target_mc.yreg = 0;
        target_mc.setRegistration = p.setRegistration;
        target_mc.setPropRel = p.setPropRel;
        with (target_mc) {
            addProperty("_x2", p.get_x2, p.set_x2);
            addProperty("_y2", p.get_y2, p.set_y2);
            addProperty("_xscale2", p.get_xscale2, p.set_xscale2);
            addProperty("_yscale2", p.get_yscale2, p.set_yscale2);
            addProperty("_rotation2", p.get_rotation2, p.set_rotation2);
            addProperty("_xmouse2", p.get_xmouse2, null);
            addProperty("_ymouse2", p.get_ymouse2, null);
        }
    }

    private function setRegistration(x:Number, y:Number):Void {
        this.xreg = x;
        this.yreg = y;
    }
    
    private function get_x2():Number {
        var a = {x:this.xreg, y:this.yreg};
         this.localToGlobal(a);
        this._parent.globalToLocal(a);
         return a.x;
    }
    
    private function set_x2(value:Number):Void {
        var a = {x:this. xreg, y:this. yreg};;
        this.localToGlobal(a);
        this._parent.globalToLocal(a);
        this._x += value - a.x;
    }

    private function get_y2():Number {
        var a = {x:this.xreg, y:this.yreg};
         this.localToGlobal(a);
        this._parent.globalToLocal(a);
         return a.y;
    }
    
    private function set_y2(value:Number):Void {
        var a = {x:this.xreg, y:this.yreg};
        this.localToGlobal(a);
        this._parent.globalToLocal(a);
        this._y += value - a.y;
    }
    
    private function set_xscale2(value:Number):Void {
        this.setPropRel("_xscale", value);
    }
    
    private function get_xscale2():Number {
        return this._xscale;
    }
    
    private function set_yscale2(value:Number):Void {
        this.setPropRel("_yscale", value);
    }
    
    private function get_yscale2():Number {
        return this._yscale;
    }
    
    private function set_rotation2(value:Number):Void {
        this.setPropRel("_rotation", value);
    }
    
    private function get_rotation2():Number {
        return this._rotation;
    }
    
    private function get_xmouse2():Number {
        return this._xmouse - this.xreg;
    }
    
    private function get_ymouse2():Number {
        return this._ymouse - this.yreg;
    }

    private function setPropRel(property:String, amount:Number):Void {
        var a = {x:this.xreg, y:this.yreg};
        this.localToGlobal (a);
        this._parent.globalToLocal (a);
        this[property] = amount;
        var b = {x:this.xreg, y:this.yreg};
        this.localToGlobal (b);
        this._parent.globalToLocal (b);
        this._x -= b.x - a.x;
        this._y -= b.y - a.y;
    }
}

into a AS3 class.