a few weeks or months ago a (I think jQuery plugin) wizard was released, which allows you to do interactive "tutorials". You were able to cr开发者_开发技巧eate interactive boxes which relates to html elements and you were able to change to color of these boxes to red. It's also possible that it was "just" a javascript script and not a jquery plugin.
Edit: I know that there was a delicious bookmark button at the bottom of the site.
Edit: It was something like that: http://icant.co.uk/sandbox/stepbystep/
I found it: http://amberjack2.org/
Formwizard?
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