Display animated gif on same web page when clicking submit button

Hello, I want to display an animated gif on my web page when a user clicks on my submit button, then have the animated gif dissapear when the process is complete?

Is there a simple solution to this?

Thanks.

Unfortunately, the only way to achive this is to redirect to another page, do the processing then redirect back to the main page.

Thanks for the reply Serge. I was wondering if you had thoughts on this other problem that I have.

Java question