What is the proper way to update a panel's properties?

[tslatt]

Here's an easy question for once (I hope):

I've seen both of these methods, but I'm not sure which is the right way to update a panel's properties. If I want to collapse (or expand, close, open, maximize, restore) a panel, which of these lines of code is the proper way to do it? And what is the difference between the two?

Code:

$("#p").panel({ collapsed: true });
$("#p").panel("collapse");

[stworthy]

Call $('#p').panel({...}) will recreate the panel.
Call $('#p').panel(methodname, parameter) will perform action on the panel existed.

[tslatt]

OK, that makes sense. Thanks!