How can I stop jquery effects from cloning nearby elements during execution of effect?
<p>I have observed some strange behavior with a few jquery effects.  The one that always exhibits the behavior that concerns me is slideUp(1000).  My HTML is formatted similar to:</p>

<pre><code>&lt;ul&gt;
   &lt;li&gt;Nav Element&lt;/li&gt;
   &lt;li&gt;Another...&lt;/li&gt;
   &lt;li&gt;...&lt;/li&gt;
&lt;/ul&gt;
&lt;div id="action_area"&gt;
   Stuff
&lt;/div&gt;
</code></pre>

<p>Then my jquery call is:</p>

<pre><code>$('#action_area').slideUp(1000);
</code></pre>

<p>When this call is executed the formatted navigation tabs appear to be cloned just above the "Stuff" in the action_area div during the time the slideUp effect is executing.  This action area can be reopened and when it is the navigation tabs don't appear again.  They only "appear" to be there when the slideUp function is being executed?  Is this normal?  If so then why?  Is there a way to prevent this?</p>
