var lTime=40*60;
function LogoutTimer() {

lTime=lTime-1;

var lMins=(lTime-(lTime%60))/60;
var lSecs=lTime%60;

window.status="Auto Logout: " + lMins + " Min " + lSecs + " Sec" ;

//5 min warning
if (lMins==4 & lSecs==59) {
alert('Your session will time out in 5 minutes.');
}

//timeout warning
if (lMins==0 & lSecs==0) {
alert('Your session has timed out. You will need to close your browser, reopen it and then select your items. Sorry for the inconvenience.');
}

}

window.setInterval("LogoutTimer()",1000);
LogoutTimer();