This will revert $ back to its original library. You'll still be able to use "jQuery" in the rest of your application.

Additionally, there's another option. If you want to make sure that jQuery won't conflict with another library - but you want the benefit of a short name, you could do something like this:

     var $j = jQuery.noConflict();

     

     // Use jQuery via $j(...)

     $j(document).ready(function(){

       $j("div").hide();

     });

     

     // Use Prototype with $(...), etc.

     $('someid').hide();