I know this is possible because my banks web interface does it. When my session expires it automatically displays the login page, forcing me to log back into the application. (very friendly)

I would like to do the same thing in our application; when the session expires have the clients browser display the login page to the application again.

Is there an easy way to accomplish this? Or has there been an article written showing how to accomplish this? I know it can't be that difficult be a push in the right direction would be greatly appreciated.

Thanks for the help...