Merge pull request #3 from jinzhubaofu/master

add setBody setTitle and isShowing methods to tip.js
add new direction,  tc | rc | bc | lc are available for options.arrow now
update examples for new direction
Merge pull request #4 from jinzhubaofu/master

fix bug in ie6 border transparent hack
optimize code & update example
add new directions for Popup,  tc | rc | bc | lc are available for options.dir now
fix code style for jshint
增加事件支持，使之可测试化
fix doc
set white to false
sync from esl
add jasmine lib for test
fixed bug when specified className for types
当控件的dispose被调用时，其所有子控件的dispose也将被调用
根据 jasmine 测试结果，修复 validate 等接口问题
增加 Gruntfile
增加 jasmine 测试用例
fixed for jshint
jsdoc 文档生成
remove debug code(console.log)