A couple of months back, I stumbled upon Google Web Toolkit where they introduce the concept of complex windowing applications development using ajax.
You don’t need to worry about how this drop down get fetched as much as putting the query to list them.
To put it simple, if you are planning to have a full window application such as accounting program, the first comes to your mind is C#, VB , Delphi, etc…
Now with GWT, you continue developing web application but with way extra mile provided from GWT to simulate all desktop applications.
The nice thing here is GwtPHP, which is using the same framework somehow to develop in PHP in the same way. an example of what you can do http://demo.qualityunit.com/pax4/merchants/login.php



