Ashely:
That's actually a different type of effect than that of the DD Panel script actually. It's merely animating an absolutely positioned element on the page, hence it's easy to create the effect of it sliding upwards. The DD Panel script on the other hand actually animates an inline content on the page (so the rest of the page's content gets pushed up/down at the same time).
The effect cited in your link is closer in nature to this one on DD:
http://dynamicdrive.com/dynamicindex5/bottomtool.htm
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