title: Show some elements from jquery collection of elements
body: <p>¡Holla pros,</p>
  
  <p>I have <a href="http://jsfiddle.net/D369e/" rel="nofollow">this</a> piece of code, which is partially working. Based on some conditions I want to make visible some of the list elements. Currently only the alert works. I`m not sure what is the error.</p>