Do other examples work in the same browser?
Can you check if the js files are loaded correctly? (with chrome,press F12, select Network tab, refresh the page)
I am using IE11 / Firefox 30.0 / Chrome Version 35.0.1916.153
Effectively all other examples do not work also ????? Strange that is used to work last weeK ?
On the firebug I have this error : https://localhost:43045/b4j_ws.js
Line 66
TypeError: $(...)[ed.method] is undefined
$(ed.id)[ed.method].apply($(ed.id), ed.params);