Timing out a web page, not a session

I have a question, does anyone know if it is possible to just time out a web page?

My users are working with sensitive information and I would like to force the page to re-route if the user has been idle for a certain number of minutes. Am I just wishful thinking here or is this possible?

Subject: Timing out a web page, not a session

Use a javascript timer function to redirect the page after xx seconds.

Shawn