Need help for rotation

1

i have a object which is duplicated 10 times and they all move
same direction i want all the objects(the main one and the
duplicated ones) should have different directions and i have written
the code for mouse but instead i want it to happen without the help of the mouse

Code for the rotation of the object with the help of the mouse

dify = _parent._ymouse-_y;
    difx = _parent._xmouse-_x;
    
    _x = _x+(difx/5);
    _y = _y+(dify/5);
    
    // Calculate the angle
    myangle = Math.atan2(dify, difx)*180/Math.PI;
    
    trace("_rotation=========" +_rotation);
    
    _rotation = myangle;