Animation when user go into site, but not when he travels

I have a website, where i wanna use some simple animations when the page is loaded. The animation code is not a problem. This animation is some fading in of menu and other elements. I will call this an intro of my page. I want the end-user to see this animation ONLY when he visit a site, and dont see when he clicks some links in menu and travel around 开发者_JS百科my website. I worked it out for now by putting the animation code only on fron page, but for example: what if someone gives a link to mywebsite.com/news to someone. He will go into site and he will not see the animation cause its only on the front page. Any solutions? I think about some session & cookies "if" statements with php maybe, but I'm a begginer and I dont know how to work it out.

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Make your home page always the same, and just load the code of the other pages. I mean, you can use frames, or php code with include('file.php'); for example. Then your animation will be always on the same page, or just load a frame in every page of your site, and the anim in that frame.

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You are asking your system (as a whole) to remember information between HTTP requests (page fetches). HTTP is by design a stateless system, so you will have to use one of the mechanisms which have been developed for remembering information: cookies or (server-side) sessions. (Actually, sessions are usually implemented using cookies, but you can think of them as separate technologies).

Sessions in PHP are quite easy to use: you'll just fire the animation when you create a new session. But you will have to work out how you are going to decide when a session is continuing, and when it has expired and you need a new one.

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To destroy one php session you can do session_destroy();