app/views/layouts/_header.html.erb
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html>
<head>
<meta http-equiv="X-UA-Compatible" content="IE=7"/>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title><%= @page_title + ' - ' + @product_name %></title>
<link rel="shortcut icon" href="<%= "#{base_url}/favicon.ico" %>"/>
<%= stylesheet_link_tag @extjs_base_url + '/resources/css/ext-all.css' %>
<%= stylesheet_link_tag 'application' %>
<%= javascript_tag "var BASE_URL = '#{base_url}';" %>
<%= javascript_include_tag @extjs_base_url + '/adapter/ext/ext-base.js' %>
<%= javascript_include_tag @extjs_base_url + '/ext-all.js' %>
<%= javascript_include_tag 'application' %>
<%= javascript_include_tag '/ext/locale/ext-lang-' + I18n.locale.to_s + '.js' %>
</head>
<body>