title: jquery, add variable to element?
body: <p>I have a question regarding jQuery. I have a <code>li</code> that slides out, now I want to remember if it has slided out so I want to set a boolean variable <code>slidedOut</code>.</p>
  
  <p>Is it possible to simply add it to the element? Or should I add a hidden <code>div</code> or something to to element?</p>