I have an application that requires a user to logon. And can hove only one instance of being logged on. I.E. Yahoo will let me logon with concurrent sessions. My site will not let you do this. I create a log record on a SQL Server DB that tracks this. The problem I am having is detecting when the user closes the browser without loggin off. All pages have a log off button but we all know how difficult it is to train users. Without setting a forced logoff at 30 minutes, 5 minutes or 30 seconds, is there a way to capture a browser being closed and kick off an ASP script?<BR><BR>Thanks for the help.