Create a popup window in MediaWiki

I am customising MediaWiki for our internal portal.

I need to open a popup window on clicking a link in the wikitext. This popup would take information from the MySQL database and display a movie开发者_如何学Python clip or a document or something.

How can this be done?

http://www.mediawiki.org/wiki/Category:Popup_extensions

You've probably considered this but just to be sure - many people really hate popups which is why modern browsers have pop up blockers. So, if you use them, you'll have to include browser specific instructions on how to enable pop ups.

As an alterative, I suggest you embed the movie clip / document - using e.g. an iFrame.