• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.

Open new tab for speific groups

If an user is member of a specific group I want the user to open a new tab with the given link. I do only want this to happen once, so I want it to store a cookie when it open a new tab for the user and next time check if the user have the cookie or not. I hope this is understandable and possible.

How do I do it, is it hard? I can reward with 10 mBTC for the code if it is legal here.