20个实用的jQuery Tooltip插件与教程
Build a Better Tooltip with jQuery Awesomeness
qTip Tooltip Plugin
jQuery Popup Bubble
BeautyTips09
jQuery Form Validation and Tooltip
SimpleTip
jQueryTools Tooltip
jQuery AJAX Plugin
TipTip jQuery Plugin
View the Demo on Download Page
jQuery Horizontal Tooltips Menu
Simple Tooltip Powered by jQuery
Horizontal Tooltips for Menus
Create a Simple Tooltip with jQuery and CSS
jTip Tooltip Plugin
Coda Popup Bubbles
ProtoTip 2
Easiest Tooltip and Image Preview with jQuery
jGrowl Tooltips
Digg Style Post Sharing Tooltip with jQuery
Orbital Tooltip
ajax 
umltool