domain: client
language: javascript
class Item class
Call refresh_page to send to the server a request to get current data of
the current page and refresh existing visual controls.
The refresh_page method can have the following parameters:
callback: if the parameter is not present, the request is sent to the
server synchronously, otherwise, the request is executed asynchronously and
after that the callback is executed
async: if its value is true, and callback parameter is missing, the request
is executed asynchronously