Modify our internal site to make FIREFOX COMPATIBLE

Hi everyone, i'm submitting this project because [login to view URL] FAILED to work on it, very incompetent Our company has an internal application (online services) written in PHP/Javascript (using MySQL db connections) by a consultant no longer available. The application is strictly usable with MS-Explorer and the code is very difficult to understand for our internal resources. The AIM of the project is to make Mozilla Firefox compliant entire site. The site is about 7 sections of about 3/4 pages each. You can explore it entering with login "odurso" and password "orazio" at address: [login to view URL]