app/assets/javascripts/home.js.coffee
$ ->
$('.show-old-users').click ->
$('.old-user, .old-user td').fadeIn()
$('.show-old-users, .hide-old-users, .hidden-product').toggleClass('hide');
$('.hide-old-users').click ->
$('.old-user, .old-user td').fadeOut()
$('.show-old-users, .hide-old-users, .hidden-product').toggleClass('hide');