In my opinion, to keep it simple you should use some client side code to NOTIFY to the user that it hasn't saved the data, so to force it to click on some 'Save' button; write the instructions somewhere in the page, so the user knows what he's doing. If you're smarter, you can use client side scripts to save the data, but this will fail when the browser doesn't support javascript (or it is disabled: Exploer 6 SP1 usually prevents javascript execution). This tchnique is called AJAX: there are some articles here in Code Project, but it is a little complicated.
[ITA] Tozzi ha ragione: Gaia si sta liberando di noi. [ENG] Tozzi is right: Gaia is getting rid of us.
