The Connection class encapsulates a connection to the page's originating domain, allowing requests to be made either
to a configured URL, or to a URL specified at request time.
Requests made by this class are asynchronous, and will return immediately. No data from the server will be available
to the statement immediately following the
request call. To process returned data, use a success callback
in the request options object, or an
event listener.
File Uploads
File uploads are not performed using normal "Ajax" techniques, that is they are not performed using XMLHttpRequests.
Instead the form is submitted in the standard manner with the DOM