插件下载地址 ext

ext2.2.0 

http://files.cnblogs.com/files/chenghu/ext-2.2.zip

http://files.cnblogs.com/files/chenghu/ext-2.2.zip官网下载包.zip 

Ext.ToolTip和Ext.QuickTips

http://www.cnblogs.com/scwyh/archive/2011/05/13/2045222.html

详解extjs的Tooltips与QuickTips

http://www.cnblogs.com/hanyun/archive/2012/05/17/2506712.html