This Add-in enables you to show modal windows (popup windows/dialogs) automatically "on Page Load" (when the page initially appears).
There are several options, such as:
Opening a popup window with a delay of some seconds.
Closing the popup window automatically after some seconds.
Not showing the popup window to the same unique visitor twice (through cookies).
"Auto Popup Window" Add-in Screenshot
(where to find the Add-in's related properties)
The produced popup windows are fully cross-browser, i.e. they work alike in all browsers supporting DHTML (like Firefox, Internet Explorer, Google Chrome, Opera, Mozilla, Konqueror, Safari and more).
(note: this add-in is included for free within the Likno Web Modal Windows Builder application)