The idea is to create a div within the whole body of the site for the user to see when they enter, so it would have something like "short the page to enter now or wait 30 seconds". The part of the time is to do in js with the setinterval and getelement to give a display: none after 30 seconds, the problem is the part of the tanned, how to do and how not to display the message again if the user has already tanned. / p>