Jquery Conflict with Prototype in Magento

To use Jquery along with Prototype add the following code in your Jquery Script.

 var $j = jQuery.noConflict();

This example allows you to use the shorthand $j and lets prototype us $:

var $j = jQuery.noConflict();
$j(document).ready(function(){
$j("div").hide();
});

src: samsami2u