Overlays To Hide for Certain Period of Time When User Clicks Close Button
<p>Seeking help in finding good tutorials and readings on to set up an overlay like this:</p>

<p>when someone clicks the close button, do not show the overlay again until 15 days or some time period in the code.</p>

<p>I assume this would be saving a cookie, just trying to find good articles on the subject. Any help would be greatly appreciated.</p>
