.htaccess and .htpaswd does cancel my connection

My .htaccess:

AuthUserFile .htpasswd
AuthType Basic
AuthName "My Secret Folder"
Require valid-user

My .htpasswd is in the same directory. This is a webspace not a server so I am not able to use the full path for the AuthUserFile...

The thing is: It does work...I need to login and when I'm logged in I can see my page and everything is working. But my pages is using images from the same directory and a subdirectory. When I'm using images from the subdirectory everything is fine. But when I want to use some file on the same directory where the index.html is it gives me an error.

I just don't understand why because it is local...