如何渲染rails静态404,500错误页面没有站点布局？

I'm using rails 3. In production rails nicely handles exceptions and loads my static 404.html, 500.html etc files from my public directory. However, it loads these files into my layouts/application.html.erb file. I am looking for a way to instruct rails to load these files WITHOUT using my application layout - e.g. just serve the static html file and nothing else. What is the best way to accomplish this? I'm using rails 3. In production rails nicely h