Main-head background script

Hello,

I'd like to do something like this: (Edited with Google Chrome- just a test)


but how?
I think I have to set up cookies for that tag but how? Can you provide me an entire code? Thanks :star:

Indedd there must be used javascript. All you need to do is to add one textbox, button, and add javascript for onClick for button. You can also use jQuery to change CSS but javascript can do the things also. Do you know javascript?

But I don't know how to do this...