I need a bug fixing of my existing application > It is a web-based application

The application is built mainly on PHP The application is built mainly on ASP The application is built mainly on ASP.NET The application is built mainly on JSP The application is built mainly on Perl The application is built mainly on Java The application is built mainly on Ruby-on-Rails The application is built mainly on Python The application is built mainly on ColdFusion The application is built mainly on C/C++ The application is built mainly on Flash The application is fully AJAX-based I need some fixes in the JavaScript I need some other bug fixing solution I am not sure and I need your assistance