Long description

The contents of browser windows are as follows.

Browser 1:

Drop down, left aligned, labeled “Select country”: Canada, France, Germany, Italy and United States. There is text to right side of drop down that reads Numerical 1 in solid circle The HTML page contains a form element that posts asynchronously

Browser 2:

Drop down, top left aligned, labeled Italy. There is a solid red line from drop down menu to outside.

There is text below the drop down that reads Numerical 2 in solid circle A user selection asynchronously submits the user's choice. Meanwhile, the page remains interactive while the request is processed on the server

Browser 3:

Drop down, top left aligned, labeled Italy.

Drop down labeled “Select city”: Florence, Milan, Pisa, Rome and Venice. There is a solid red line pointing to the drop down from outside.

There is text to right side of drop down that reads Numerical 3 in solid circle The response arrives and is handled by JavaScript, which uses the response data to update the interface (in this case another select list has been created with data received in the response)