zul.wgt
Classes 
A
Area
Button
Captcha
Caption
Cell
Chart
Checkbox
Combobutton
Div
Fileupload
Groupbox
Html
Idspace
Image
Imagemap
Include
Label
Notification
Popup
Progressmeter
Radio
Radiogroup
Selectbox
Separator
Space
Span
Toolbar
Toolbarbutton