Provides an element "QV" next to a comment's "Parent" link that provides a quick-view of the parent comment. The parent comment is displayed when the left mouse button is pressed on the element and disappears when released. (Works only for comments that have their parent comment displayed on the same page). Doesn't work for most paid account customizations.

Update(Dec 18, 2005): Updated to work with Firefox 1.5/GM 0.6+