BeautyTips is a jQuery tooltips plugin which uses the canvas drawing element in the HTML5 spec in order to dynamically draw tooltips.
These tips are highly configurable and can be triggered in many different ways. Tested with jQuery 1.2.6 and 1.3 on Firefox 3.x, Safari 3.x (also works on iPhone!), IE 6.x+, and Opera 8+.
For IE support, be sure to use the ExplorerCanvas library created by Google to support Canvas in Explorer. To fix z-index problems with form elements in IE6, include the bgiframe plugin on your page. BeautyTips will automatically recognize it and use it.