HTTP Error 403 Forbidden
INTRODUCTION: (Pasted below is from-URL; http://www.checkupdown.com/status/E403.html )
The Web server (running the Web site) thinks that the HTTP data stream sent by the client (e.g. your Web browser or our CheckUpDown robot) was correct, but access to the resource identified by the URL is forbidden for some reason.
This indicates a fundamental access problem, which may be difficult to resolve because the HTTP protocol allows the Web server to give this response without providing any reason at all. So the 403 error is equivalent to a blanket ‘NO’ by the Web server – with no further discussion allowed.
By far the most common reason for this error is that directory browsing is forbidden for the Web site. Most Web sites want you to navigate using the URLs in the Web pages for that site. They do not often allow you to browse the file directory structure of the site.
THE WIKIpedia URL on this topic; http://en.wikipedia.org/wiki/HTTP_403
GOOGLED; – 403 forbidden