Modifying a simple PHP File Manager Script to add file filtering etc etc

Hi I wish to modify a PHP File Manager script so it can do a few more little things. The PHP script is at [login to view URL] The script is "osFM Static 1.1" not 2.2 It's only one php file I like to be able to configure the followings in the PHP script:: 1. add a file name filter & folder name filter sitewise so it will not list every file or folder in the directory. E.g. if the file name contains .php or "answers" then it will not be displayed. E.g. if the folder name contains the word "asset" then it will not be listed. the purpose to to prevent user from accessing or editing certain files or folders. 2. I like to be able to limit the max size of upload file, the file type, and destination path. E.g. A limit of may be 200kb file size, jpg or gif or png only, or destination is /images/ only the above is just an example 3. ability to hide the Create link so user cannot a new file 4. ability to define a banner image just above the top title text Thanks