Flash AS2 - Claudio scrollbar(move position)

Hi All,

I am using the scrollbar done by Claudio (horizontal version) which is extremely great however I need some help. I have some buttons in a menu through which on click I change the contents position. At the moment I am using the following code on click on a button

 
_root.scrollFace._x = _root.scrollFace._x=95;
  _root.content._x = _root.content._x=151;

which works well however the new position just jumps in. What the client requires is to have the scrollbar slide to the new position rather than jump in. Please please please help.