What is prefered method to show Centered pop-up with dim background using jQuery?

Like this page http://webappsledger.com/

This is loading pop-up in iframe. Can we same type of effect 开发者_运维知识库to keep pop-up content hidden at same page?

Which approach is better? I need to keep a Web Form in pop-up. with successfully submitted message in same popup.

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This is generally called a 'Lightbox', and there are many many options out there.

One of my favorites is Colorbox ( http://colorpowered.com/colorbox/ ), and it supports iframes right of out the box.

Their demo pages have various usage, including using iframes:

http://colorpowered.com/colorbox/core/example1/index.html