I am simply trying to get an animated transition to the adding of a class. I have tried fading in using the fadeIn() function which didnt work and now simply adding time in the second argument...but ti's a no-go. Anyone have any ideas why?

1. <script>  
2. $(document).ready(function() {
3. $(".content-item").click(function(){
4. $(this).addClass("div-selected", 500);
5. });
6. });
7. </script>