where can i get this mod from?

[cooky]

im looking for a guest pop up that prompt the user to register or login can someone point me in the right direction you can see it working here

http://www.visordown.com/forums

thanks in advance

[cooky]

well it was there but its dissaperaed lol check out my invision forum im after something like you see there as a guest http://www.xjr1300.co.uk/invision