This week's book giveaway is in the OCMJEA forum. We're giving away four copies of OCM Java EE 6 Enterprise Architect Exam Guide and have Paul Allen & Joseph Bambara on-line! See this thread for details.
Sounds like a perfect application for AJAX. Libraries like Prototype and jQuery make it easy to kick off a request, collect the result, and update the HTML page accordingly without actually leaving the page.