page duration tracking

Is there a way to incorporate some type of time in a page to track the duration of time each individual visitor spent on a specific page with ...PHP? I know I can keep a counter with JavaScript, but I would like it to keep track in my stats file. I can track & log the arrival time, but would like to either track the page exit time, too. It would be great to convert it to minutes:seconds for time spent viewing the page. I only want to track how much time someone spends on my index.php page before they leave the page. I can track when they click to the next page in my site. Thanks for any help and suggestions! Mike Lewitz Phoenix, AZ Supra - the only way to FLY! ========================== "Manage your destiny, or someone else will." ~Jack Welch, Former CEO, General Electric