>Is FoxPro aware of what happens in the browser object? For example, if I click on a hyperlink, or press a submit button, is FoxPro aware of this event so that it can act on it? If I enter a field on an HTML form, can FoxPro "intercept" that data to have visibility to it?

I doubt you have any control untila form is submitted (or some other Navigate action takes place). You need to use JavaScript to do what you want, I believe.