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This is a demonstration using JavaScript and cookies to display a popup window if the visitor has not yet seen the popup.

The popup window is a countdown that will close automatically after 30 seconds. It uses cookies and it will appear only once! If you want to see it again, you'll need to close your browser, launch your browser again, and reload this page.

Instructions for use were first published in WillMaster Possibilities, in an articles titled, "Quick! Click the Button!" The article is linked from the WillMaster Possibilities archives.

To download this set of example pages, click here.