jQuery UI Tabs show OWN effect?

jQuery UI Tabs show OWN effect?

Hi Everyone!
jQuery UI 1.9 is amazing! I want to ask about this version of UI.
There are updates for Tabs options and events, but im iterested about Show/Hide Option and its Effect suboption.
UI Documentation:

The panel will be shown using the specified effect. The value can either be the name of a built-in jQuery animateion method, such as "slideDown", or the name of a jQuery UI effect, such as "fold". 

Is it way to use own effect for show/hide option?