Rails 3.2 jquery 'live' action being updated with 'on' for UJS.

example.js

var like_enter = function(){
  $(".already_liked").find('.title').text('Unlike It');
  $(".already_liked").find('i.icon-circle').addClass('unliked-circle');
  $(".already_liked").find('i.icon-light').removeClass('icon-heart').addClass('icon-remove');
}
	
var like_leave = function(){
  $(".already_liked").find('.title').text('Like It');
  $(".already_liked").find('i.icon-circle').removeClass('unliked-circle');
  $(".already_liked").find('i.icon-light').removeClass('icon-remove').addClass('icon-heart');
}

$(document).on("mouseenter", "a.already_liked", like_enter);
$(document).on("mouseleave", "a.already_liked", like_leave);

The above example lives within the main application JS file. In order to rebind the mouseenter and mouseleave events within a UJS response they must be redefined in the context of the document object else it will not work.