Nifty Dialog is a simple javascript library providing support for dialogs within HTML applications.
This particular module is designed to be included within a Ruby on Rails application. To use this, simply add this library to your Gemfile and include some references in your appropriate files.
In your Gemfile:
gem 'nifty-dialog'
In your app/assets/javascripts/application.js:
#= require nifty/dialog
In your app/assets/stylesheets/application.css:
*= require nifty/dialog
Don't forget to run bundle after adding the item to your Gemfile.