title: jQuery adding style="overflow: hidden;"
body: <p>I have created a bit of code to hide my menu, the menu is not complete but I am trying to use <code>jQuery.slideUp()</code> function but it adds <code>style="overflow: hidden;"</code> to the code so when I use .show one of my elements is hidden which is <code>#nav:after</code> and <code>#nav:before</code> which adds a small arrow to the bottom of the menu</p>
  
  <p>here is the js code</p>
  
  <pre><code>  $("span#start_button").click(function () {
          if ($("#nav").is(":hidden")) {
              $("#nav").show("fast");
          } else {
              $("#nav").slideUp();
          }
      });
  </code></pre>
  
  <p>and here is the result on <a href="http://laggy.koding.com/" rel="noreferrer">this site</a> </p>
  
  <p>How can I stop <code>.slideUp()</code> from creating <code>style="overflow: hidden;"</code> ?</p>