# What kind of effect is this?

**URL:** <https://forum.kirupa.com/t/what-kind-of-effect-is-this/200406>\
**Category:** random\
**Created:** [September 11, 2006, 11:36pm UTC](https://forum.kirupa.com/t/what-kind-of-effect-is-this/200406 "2006-09-11T23:36:42Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![j\_h](https://avatars.discourse-cdn.com/v4/letter/j/ed655f/32.png) [@j\_h](https://forum.kirupa.com/u/j_h)\
**Post date:** [September 11, 2006, 11:36pm UTC](https://forum.kirupa.com/t/what-kind-of-effect-is-this/200406/1 "2006-09-11T23:36:42Z")

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[http://www.duckfarm.net/desktops.html](http://www.duckfarm.net/desktops.html)

When you click on the examples the screen darkens and a new window appears in the middle. How is this done? I am just curious.

JH