CSS are from http://www.position-absolute.com/articles/jquery-form-validator-because-form-validation-is-a-mess/ errorPlacement-method are from http://stackoverflow.com/questions/860055/jquery-override-default-validation-error-message-display-css-popup-tooltip-lik

• @mentions, #refs, links, formatting, and tags supported
• list syntax required (any unordered or ordered list supported)
• this is a complete item
• this is an incomplete item

require 'redcarpet'
markdown = Redcarpet.new("Hello World!")
puts markdown.to_html