A2Billing is a telecom switch and billing system capable of providing and billing a range of telecom products and services to customers such as calling card products, residential and wholesale VoIP termination, DID resale and callback services.
A couple of changes I suggest to fix the load of pages when you have selected to load an specific cssname.
For example if the very first time you access the page with the URL:
index.php?cssname=template1.
When you logout and you are redirected to the authentication screen, you should see the exact same url, with the ?cssname=template1.
The same scenario when you have raised an error and there is a GO to login link.
A couple of changes I suggest to fix the load of pages when you have selected to load an specific cssname. For example if the very first time you access the page with the URL: index.php?cssname=template1. When you logout and you are redirected to the authentication screen, you should see the exact same url, with the ?cssname=template1. The same scenario when you have raised an error and there is a GO to login link.
The files changed are: