jQuery Plugin to fade in and out with a vertical slide

showdown-hideup.js

(function ($) {
  'use strict';
  var getUnqueuedOpts = function (opts) {
    return {
      queue: false,
      duration: opts.duration,
      easing: opts.easing
    };
  };
  $.fn.showDown = function (opts) {
    opts = opts || {};
    $(this).hide().slideDown(opts).animate({ opacity: 1 }, getUnqueuedOpts(opts));
  };
  $.fn.hideUp = function (opts) {
    opts = opts || {};
    $(this).show().slideUp(opts).animate({ opacity: 0 }, getUnqueuedOpts(opts));
  };
  $.fn.verticalFade = function (opts) {
    opts = opts || {};
    if ($(this).is(':visible')) {
      $(this).hideUp(opts);
    } else {
      $(this).showDown(opts);
    }
  };
}(jQuery));