modify object
change extend and test
small modiy
add and int tabbar
change widget.factory to widget.extend
change obj to opt
add button and init
fix Class string . it is cls
modify button.js
fix ie navitem layout
modify css
init tabbutoon
change 'ui/js/*js' to 'ui/*.js' and modify code to change location
fix widgetEventPrefix
modify tabbutton
modify Widget to provide getter and setter.and check this by extend but without modify outer widget
modify extendAttr when Widget.call be call
change _superCallTimeout to _superTimeoutCall
modify _extendAttr to fix subValue is undefined
modify object instance