Screenshot is provided below. However, much better if you just see the screencast (YouTube, blip.tv, 3.3 MB Ogg Theora video). Even better, just compile the code and give it a try!
svn checkout svn://labs.trolltech.com/svn/graphics/dojo/searchsnap
cd searchsnap && qmake && make && ./searchsnap
Exercise for the reader: use jQuery to get the hit list. More exercise: with Qt 4.5's WebKit, you have HTML5's getElementsByClassName at your disposal.