Opentip 是一个漂亮的JavaScript tooltips 框架，支持jQuery, Prototype或单独使用。

它使用HTML5 canvas来创建Tooltips，所以可以创建任何有创意的设计，在所有浏览器他们几乎呈现同样的效果。

支持通过Ajax调用内容。positioning them wherever wanted or grouping them (so that only one tooltip of the same group can stay open).

A nice and unique feature is stems (the little pointers) which auto-arranges themselves into any direction.

Opentips has multiple, good-looking styles and new ones can be created very easily.