If a particular page on an Internet site does not load for some reason or in case a link is not functioning, the visitor will see an error page with some generic message. The page will have nothing in common with the rest of the Internet site, that could make the visitor leave your site. A solution in such a case is a function offered by some hosting companies - the ability to set up your own custom error pages which will have exactly the same style and design as your website and that could contain any images or text that you'd like based on the specific error. There are 4 standard errors which may occur and they involve these particular so-called HTTP status codes - 400, when your Internet browser sends a bad request to the web server and it cannot be processed; 401, if you're supposed to log in to see some webpage, but you have not done so yet; 403, if you don't have an authorization to view a certain page; and 404, if a link that you've clicked leads to a file which does not exist. In each of these situations, site visitors will be able to see your custom made content as opposed to a generic error page.