Cookie link redirect Script

Hello. I am looking to do a similar project as one posted previously by another user. I do not have server access for my client - they have me email everything to them but I can maybe test it on my own server. Here is the original project: "I need a script that will detect if the user has a specific cookie and if they do when they click on a link on the website it will redirect them to a specific page If they do not have that cookie, then redirect to a different page. ie. if the cookie matches "cookie name" and the var "domain.com" then redirect to /[login to view URL] if the cookie does not match then redirect to /[login to view URL] " Basically...my project is similar...I want the visitor who enters [login to view URL] to be recognized via cookie and when he clicks on [login to view URL] link, he will be taken to [login to view URL] but if he entered via [login to view URL] then when clicking on the same [login to view URL] link, he will be taken to [login to view URL] instead.