coding Skill diamonds

[stranf]

If a skill is not coded yet, the little diamond when double clicked will say "This skill has not been implemented yet".

Is there a JS function such as "OnSkillGumpUse" that I can use to "implement" this skill. If so, where do I put this function, the global.js?

As it currently looks, the diamonds appear to be hardcoded, it would be a nice customizable option to override this via JS if possible.

Thanks!