GridToolbar

http://webdesign.tutsplus.com/tutorials/htmlcss-tutorials/quick-tip-a-handy-grid-overlay-toolbar/

Installation

Add this line to your application's Gemfile:

gem 'grid_toolbar', :git => "git://github.com/Kaine/grid_toolbar.git" 

And then execute:

$ bundle install

Usage

Inside your Rails application directory:

rails g grid_toolbar:install