If you’re looking for a way to easily create beautiful tooltips in your web designs, you should consider taking a look at Tipped.
Tipped evolved from the Prototip library, but uses HTML5 for you to gain more control on how your tooltips look and behave.
“The entire skin of the tooltip, from shadow to loading icon, is drawn using Canvas. This means that tooltip styles can easily be changed without having to create any images.”
Nice, right?