I would like to add an option to an existing PHP page that invites users to participate in a survey - I've seen similar invitations appear on sites that I've visited in the past but have never had to build one myself. The invitation will be a hovering popup that appears on top of the current page with an option to participate which goes to a new window/page and an option to decline which simply hides the invitation. This survey will only run for one week so I can easily remove the code after 7 days but it also needs to detect if the user has previously visited this page and not dislpay the invitation again.
I assume it will use cookies to detect if they've seen the invitation previously and JavaScript with a DIV to display the invitation. I'm looking for any examples/code that shows how to do this in a PHP page so I can implement this on my PHP page.
Many thanks, Steve