jquery-ui/ui/jquery.effects.fade.js

/*!
 * jQuery UI Effects Fade @VERSION
 *
 * Copyright 2012, AUTHORS.txt (http://jqueryui.com/about)
 * Dual licensed under the MIT or GPL Version 2 licenses.
 * http://jquery.org/license
 *
 * http://docs.jquery.com/UI/Effects/Fade
 *
 * Depends:
 *	jquery.effects.core.js
 */
(function( $, undefined ) {

$.effects.effect.fade = function( o, done ) {
	var el = $( this ),
		mode = $.effects.setMode( el, o.mode || "toggle" ),
		hide = mode === "hide";

	el.show();
	el.animate({
		opacity: hide ? 0 : 1
	}, {
		queue: false,
		duration: o.duration,
		easing: o.easing,
		complete: function() {
			if ( hide ) {
				el.hide();
			}
			done();
		}
	});
};

})(jQuery);