Forums Scripts & Popups Popup: Channel Name hotlink?

Is it possible to modify the popup menu that appears when one right-clicks a channel name in the chat window? I'm looking to add something besides "Join Channel," "List Users," and "Show Topic." (For instance, an option to /msg ChanServ info #$$1.) The standard Popup options don't seem to allow this one to be adjusted the normal way.

Thanks in advance!