Facebook Login / Graph API post photo

This is a REALLY simple and fast project. It is probably not even an hour job in the hands of the right person. But the bigger picture is that we are looking to someone really experienced with using the Facebook graph and API for future projects involving publishing to Facebook as well. Here is the current/quick job required: We have a Facebook login button that is supposed to be auto-detecting FB login status and then either displaying the Login button (leading to authentication and authorization of our FB app), or else if already authenticated/authorized then display the user's FB name and pic. The login/auth status is then used to enable a "Share" button which allows the user to post a selected image to their Facebook page using the API. The problem... Something is wrong with the process for determining FB status. Sometimes everything works fine. But other times the "loading" image (which displays while the FB status check is happening) will just remain there forever. Additionally, when everything is working with the Login button, when then using the Share button to post a photo it is working... BUT is duplicating the photo (i.e. when you look on your FB timeline it displays the same photo twice). I can provide FTP access to update the file, but the code is readily visible at [login to view URL] - click the RESOURCES section and the login button can be seen in the Social Media Library. The Share button can be seen by clicking on one of the images displayed in that section.