update doctype to use html5
update
fixed z-index value for IE8
fine tune less compile process
add fontawesome 3.1.1
Merge branch '7.0' of github.com:zkoss/zk into 7.0
fine tune less compiler
fine tune less compiler
fine tune less compiler
Merge branch 'master' of github.com:zkoss/zk into 7.0
Merge branch '7.0' of github.com:zkoss/zk into 7.0
fine tune less compiler
Merge branch '7.0' of github.com:zkoss/zk into 7.0
add font icon mechanism
1. rename _import.less to _header.less
2. move EL function to _zkmixins.less
3. update norm.less and button.less
fix cant see correct checkbox and radio in firefox and webkit browser
1. fixed IE blinking gradient issue
2. fixed popup's position issue for webkit
3. fixed less's variable issue in _zkmixins.less
Merge branch '7.0' of github.com:zkoss/zk into 7.0
minor update
add $s('subclass') for caching sub zclass