Force Expand/Collapse from other code

[PJOttCan]

Maybe this is obvious for jQuery pros but for a noob it's not. From other code how would I expand or collapse one of these. I'm using it for an Edit Area form and I'd like to expand it only if someone clicks on my Edit button that's external to my Edit Area div. In other words, can I hook it up so that there's no actual anchor involved to do the expand/collapse?