var timerID = null; var timerRunning = false; function stopclock (){ if(timerRunning) clearTimeout(timerID); timerRunning = false;} function showtime () { var now = new Date(); var hours = now.getHours(); var minutes = now.getMinutes(); var seconds = now.getSeconds() var timevalue = " " + ((hours >12) ? hours -12 :hours) timevalue += ((minutes < 10) ? ":0" : ":") + minutes timevalue += ((seconds < 10) ? ":0" : ":") + seconds timevalue += (hours >= 12) ? " PM" : " AM" document.clock.face.value = timevalue; timerID = setTimeout("showtime()",1000); timerRunning = true;} function startclock () { stopclock(); showtime();}