Effects transitions

There is no easy way to add the effect you would need to deregister the current tabs shortcode js and add your own in its place.
wp_deregister_script( ‘tab-shortcode’ );

Hope that answers your question.

ok, but what should I put code and where exactly?
Thanks in advance.

Hi I have made the following changes to this file

tabs-shortcode/tab.js

jQuery(document).ready(function($) {

	$.each(tabs_shortcode, function(id, attr) {
		$("#" + id).tabs( attr );
		//Added
		$("#" + id ).tabs({
			activate: function( event, ui ) {
				ui.newPanel.hide().fadeIn(800);
			}
		});
	});
	if ( location.hash ) {
		$('a[href="'+location.hash+'"]').trigger('click');
	}
});