In a way i agree with Truce, this isnt too advanced. But not because you used variables. You could of used Database Events, then that would of been not advanced. I tried something like this at a friends City RP, but i didnt have much time on it. I called it the "SWW", or Server-Wide-Web. Cheesy, but i had a basic idea of how it would work. Its quiet similar to yours, but instead of each brick being one page, i had one brick that then relayed others, which would then ask you what page to go on, then you selected and they would ask you again.
Its uneedingly complex, but it felt alot more like the Internet than single brick sites. Sadly i didnt have a screen, i just used CenterPrints, which made me loose inspiration till i gave up.
If i may, can i go to your server one time so i can look at it in detail. Im curious about some things..