This is a small kit with popup window launching code on one page, and the code to automatically close the popup window after a preset period of time on a second page. This is basically a mini-tutorial, with very clear instructions and clean code
Developer: codebrain.com Platform: All Date upd:2004-03-05 Hits4613 [Download] [Visit]

A code generator which creates customized cut-and-paste JavaScript popup windows. Options include the ability to specify the popup's trigger, as well as it's width, height, margin, and which toolbars and menus should be available to the user.
Developer: scriptomizers.com Platform: N/A Date upd:2004-07-27 Hits6202 [Visit]

The Ace Generation 3 Popup Wizard allows you to easily add popup windows to your web site. The windows are activated by clicking on a link, button, when a page loads or unloads, and can be adjusted to any degree of detail you desire,
Developer: cgiscript.net Platform: Date upd:2001-06-19 Hits4859 [Visit]

Javascript function that creates a popup fully costumizable: you decide width, height, url, name, plus some important attributes like scrollbars, option to resize, status bar, location, toolbars. The popup is automatically centered in your screen. Simple cut and paste code, no need to digit
Developer: Triqui Platform: windows Date upd:0000-00-00 Hits1416 [Visit]

This JavaScript code will automatically center new browser window/popup windows on the screen. You can specify the size of the new window. Very easy to use: just copy and paste and that's it.
Developer: commondrops.com Platform: All Platform Date upd:2006-01-22 Hits146044 [Download] [Visit]