i got a subdomain from my freind with a ftp fr this subdomain, this is what is happening

i upload my folder called 'pics' to the ftp (through smartFTP) and then i try and view it , for e.g..

www.myname.sitename.com/pics/pic1.jpg

but it gives me

Forbidden
You don't have permission to access /picx/1.jpg on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.