APEX

Hi all.

Is it possible on a html page to make a item required?. I mean, sure Apex can make an item required, but what i mean is to make it required in the way Oracle Forms does it.

For example, in a forms application, when an item is required, once you navigate to it, you are force to supply a value in order to proceed normal processing. On Apex, as far as i've seen you can immediately, using dynamic action, tell the user "this item is required" but user can navigate to any other item in page.

Thanks in advance ...!