Creating animated GIF using Photoshop Scripting

Hi,

I am trying to mimic the action "Save for Web & Devices" of a PSD file, having 4 frames in an animation, into an animated GIF file.

I was suggested to use "ScriptingListener", but I did the copy/paste of the code, it did not work.

Is there a way to code a script, by using classes/functions to achieve this result ?

Thank you in advance.

Jean-Louis