1. Assuming your using client-side javascript, you would use the alert() in javascript.
Here is a link to a tutorial on using the alert()
2. I am not sure on this, I would have to play with it. I would expect that you have a list of controls that are not complete and you know what order the are on the page. There has to be an easier way than just manually doing it. Perhaps someone else has an idea on this.
3. Tell the browser not to cache the page.
Here's some instructions on how to do that.
Hal Levy
Daddyshome, LLC