[AS3]ToolTip类的升级版 http://www.klstudio.com/post/198.html
国外的
http://abrahamyan.com/2009/02/05/tooltip-in-as3/
http://www.adobe.com/cfusion/exchange/index.cfm?event=extensionDetail&extid=2289526
http://active.tutsplus.com/tutorials/effects/create-a-customizable-tooltip-in-actionscript-3-0/
天地会 http://bbs.9ria.com/viewthread.php?tid=8850&rpid=368435&ordertype=0&page=2#pid368435