linxx

hi all i am having this problem with the permissions when creating folders using a ftp connection on any of the 3-4 domains i am hosting i put some images or files eg file.html in the folder and the permission are chmod to 755, but when i go to example.com/folder_name it say forbbiden you dont have the permissions to access this folder where it should show a list of files in the directory.But i can view the images though by example.com/folder_name/image.gif just wont let view the content of the folder. THis is on fedora 4 thanks